{"id":50573,"date":"2023-05-11T06:38:04","date_gmt":"2023-05-18T08:01:56","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%88%91%e4%bc%9a%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8mybatis%ef%bc%8bspring-boot%e6%9d%a5%e8%bf%9b%e8%a1%8c%e5%a4%9a%e8%a1%8c%e6%8f%92%e5%85%a5%ef%bc%88multi-row-insert%ef%bc%89%e5%92%8c%e6%89%b9\/"},"modified":"2024-04-30T03:34:23","modified_gmt":"2024-04-29T19:34:23","slug":"%e6%88%91%e4%bc%9a%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8mybatis%ef%bc%8bspring-boot%e6%9d%a5%e8%bf%9b%e8%a1%8c%e5%a4%9a%e8%a1%8c%e6%8f%92%e5%85%a5%ef%bc%88multi-row-insert%ef%bc%89%e5%92%8c%e6%89%b9","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%88%91%e4%bc%9a%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8mybatis%ef%bc%8bspring-boot%e6%9d%a5%e8%bf%9b%e8%a1%8c%e5%a4%9a%e8%a1%8c%e6%8f%92%e5%85%a5%ef%bc%88multi-row-insert%ef%bc%89%e5%92%8c%e6%89%b9\/","title":{"rendered":"\u6211\u4f1a\u5c1d\u8bd5\u4f7f\u7528MyBatis\uff0bSpring Boot\u6765\u8fdb\u884c\u591a\u884c\u63d2\u5165\uff08Multi Row Insert\uff09\u548c\u6279\u91cf\u66f4\u65b0\uff08Batch Insert\uff09"},"content":{"rendered":"

\u600e\u4e48\u4e86\uff1f<\/h1>\n

\u6211\u4ee5\u524d\u4ece\u672a\u4f7f\u7528\u8fc7MyBatis\u6765\u6267\u884c\u591a\u884c\u63d2\u5165\u548c\u6279\u91cf\u66f4\u65b0\u64cd\u4f5c\uff0c\u6240\u4ee5\u6211\u60f3\u8bd5\u4e00\u8bd5\u3002<\/p>\n

\u5c1d\u8bd5\u8fc7\u540e\uff0c\u6211\u89c9\u5f97MyBatis\u7684\u6279\u91cf\u66f4\u65b0\u6709\u70b9\u96be\u5904\u7406\u3002<\/p>\n

\u5728\u4e00\u4e2a\u4e8b\u52a1\u4e2d\uff0c\u4e0d\u80fd\u540c\u65f6\u4f7f\u7528\u591a\u4e2aExecutorType\uff0c\u5e76\u4e14\u5f53\u4f7f\u7528ExecutorType#BATCH\u65f6\u6267\u884cselect\u8bed\u53e5\u65f6\uff0c\u7d2f\u79ef\u7684\u8bed\u53e5\u4f1a\u88ab\u7acb\u5373\u6267\u884c\uff0c\u8fd9\u662f\u4e00\u4e2a\u4ee4\u4eba\u611f\u5230\u56f0\u6270\u7684\u95ee\u9898\u3002<\/p>\n

\u73af\u5883<\/h1>\n

\u8fd9\u6b21\u7684\u73af\u5883\u3002<\/p>\n

$ <\/span>java --version<\/span>\r\nopenjdk 17.0.5 2022-10-18\r\nOpenJDK Runtime Environment (<\/span>build 17.0.5+8-Ubuntu-2ubuntu122.04)<\/span>\r\nOpenJDK 64-Bit Server VM (<\/span>build 17.0.5+8-Ubuntu-2ubuntu122.04, mixed mode, sharing)<\/span>\r\n\r\n\r\n$ <\/span>mvn --version<\/span>\r\nApache Maven 3.8.7 (<\/span>b89d5959fcde851dcb1c8946a785a163f14e1e29)<\/span>\r\nMaven home: \/home\/charon\/.sdkman\/candidates\/maven\/current\r\nJava version: 17.0.5, vendor: Private Build, runtime: \/usr\/lib\/jvm\/java-17-openjdk-amd64\r\nDefault locale: ja_JP, platform encoding: UTF-8\r\nOS name: \"linux\"<\/span>, version: \"5.15.0-58-generic\"<\/span>, arch<\/span>: \"amd64\"<\/span>, family: \"unix\"<\/span>\r\n<\/code><\/pre>\n
\u51b3\u5b9a\u4f7f\u7528 PostgreSQL 14.6 \u6570\u636e\u5e93\uff0c\u5e76\u5728 Docker \u4e0a\u8fdb\u884c\u51c6\u5907\u3002<\/p>\n
$ <\/span>docker container run \\<\/span>\r\n  -it<\/span> --rm<\/span> --name<\/span> postgres \\<\/span>\r\n  -p<\/span> 5432:5432 \\<\/span>\r\n  -e<\/span> POSTGRES_DB<\/span>=<\/span>example \\<\/span>\r\n  -e<\/span> POSTGRES_USER<\/span>=<\/span>charon \\<\/span>\r\n  -e<\/span> POSTGRES_PASSWORD<\/span>=<\/span>password \\<\/span>\r\n  postgres:14.6-bullseye \\<\/span>\r\n  -c<\/span> log_statement<\/span>=<\/span>all\r\n<\/code><\/pre>\n
\u4e3a\u4e86\u786e\u8ba4SQL\uff0c\u6211\u5c06log_statement\u8bbe\u7f6e\u4e3aall\u3002<\/p>\n
\u4f7f\u7528Spring Initializr\u521b\u5efa\u4e00\u4e2aSpring Boot\u9879\u76ee<\/h1>\n
\u4f7f\u7528Spring Initializr\u521b\u5efa\u4e00\u4e2aSpring Boot\u9879\u76ee\uff0c\u4ee5\u4fbf\u80fd\u591f\u4f7f\u7528MyBatis\u3002<\/p>\n
$ <\/span>curl -s<\/span> https:\/\/start.spring.io\/starter.tgz \\<\/span>\r\n  -d<\/span> bootVersion<\/span>=<\/span>3.0.2 \\<\/span>\r\n  -d<\/span> javaVersion<\/span>=<\/span>17 \\<\/span>\r\n  -d<\/span> type<\/span>=<\/span>maven-project \\<\/span>\r\n  -d<\/span> name<\/span>=<\/span>mybatis-batch-update \\<\/span>\r\n  -d<\/span> groupId<\/span>=<\/span>com.example \\<\/span>\r\n  -d<\/span> artifactId<\/span>=<\/span>mybatis-batch-update \\<\/span>\r\n  -d<\/span> version<\/span>=<\/span>0.0.1-SNAPSHOT \\<\/span>\r\n  -d<\/span> packageName<\/span>=<\/span>com.example.spring.mybatis \\<\/span>\r\n  -d<\/span> dependencies<\/span>=<\/span>mybatis,postgresql \\<\/span>\r\n  -d<\/span> baseDir<\/span>=<\/span>mybatis-batch-update | tar <\/span>zxvf -\r\n<\/code><\/pre>\n
\u524d\u5f80\u76ee\u5f55\u5185\u3002<\/p>\n
$ <\/span>cd <\/span>mybatis-batch-update\r\n<\/code><\/pre>\n
\u7531\u4e8e\u672c\u6b21\u4e0d\u4f7f\u7528\u81ea\u52a8\u751f\u6210\u7684\u6e90\u4ee3\u7801, \u56e0\u6b64\u5c06\u5176\u5220\u9664\u3002<\/p>\n
$ <\/span>rm <\/span>src\/main\/java\/com\/example\/spring\/mybatis\/MybatisBatchUpdateApplication.java src\/test\/java\/com\/example\/spring\/mybatis\/MybatisBatchUpdateApplicationTests.java\r\n<\/code><\/pre>\n
\u6211\u4f1a\u67e5\u770b\u4f9d\u8d56\u5173\u7cfb\u548c\u63d2\u4ef6\u8bbe\u7f6e\u7b49\u5185\u5bb9\u3002<\/p>\n
        <properties><\/span>\r\n                <java.version><\/span>17<\/java.version><\/span>\r\n        <\/properties><\/span>\r\n        <dependencies><\/span>\r\n                <dependency><\/span>\r\n                        <groupId><\/span>org.mybatis.spring.boot<\/groupId><\/span>\r\n                        <artifactId><\/span>mybatis-spring-boot-starter<\/artifactId><\/span>\r\n                        <version><\/span>3.0.0<\/version><\/span>\r\n                <\/dependency><\/span>\r\n\r\n                <dependency><\/span>\r\n                        <groupId><\/span>org.postgresql<\/groupId><\/span>\r\n                        <artifactId><\/span>postgresql<\/artifactId><\/span>\r\n                        <scope><\/span>runtime<\/scope><\/span>\r\n                <\/dependency><\/span>\r\n                <dependency><\/span>\r\n                        <groupId><\/span>org.springframework.boot<\/groupId><\/span>\r\n                        <artifactId><\/span>spring-boot-starter-test<\/artifactId><\/span>\r\n                        <scope><\/span>test<\/scope><\/span>\r\n                <\/dependency><\/span>\r\n        <\/dependencies><\/span>\r\n\r\n        <build><\/span>\r\n                <plugins><\/span>\r\n                        <plugin><\/span>\r\n                                <groupId><\/span>org.springframework.boot<\/groupId><\/span>\r\n                                <artifactId><\/span>spring-boot-maven-plugin<\/artifactId><\/span>\r\n                        <\/plugin><\/span>\r\n                <\/plugins><\/span>\r\n        <\/build><\/span>\r\n<\/code><\/pre>\n
\u8fd9\u6b21\uff0c\u6211\u4e5f\u628aJackson\u6dfb\u52a0\u5230\u8fd9\u91cc\u4e86\u3002\u8fd9\u662f\u4e3a\u4e86\u5e94\u7528\u7a0b\u5e8f\u7684\u9700\u6c42\u3002<\/p>\n
\t\t<dependency><\/span>\r\n\t\t\t<groupId><\/span>com.fasterxml.jackson.core<\/groupId><\/span>\r\n\t\t\t<artifactId><\/span>jackson-databind<\/artifactId><\/span>\r\n\t\t<\/dependency><\/span>\r\n<\/code><\/pre>\n
\u521b\u5efa\u6e90\u4ee3\u7801<\/h1>\n
\u6211\u4eec\u9996\u5148\u51b3\u5b9a\u684c\u5b50\u3002\u6211\u5e0c\u671b\u4ee5\u4e0b\u662f\u5173\u4e8e\u7c7b\u578b\u548c\u9879\u76ee\u7684\u4e3b\u9898\u3002<\/p>\n
drop<\/span> table<\/span> if<\/span> exists<\/span> project<\/span>;<\/span>\r\ndrop<\/span> table<\/span> if<\/span> exists<\/span> type<\/span>;<\/span>\r\n\r\ncreate<\/span> table<\/span> type<\/span>(<\/span>\r\n  id<\/span> varchar<\/span>(<\/span>36<\/span>),<\/span>\r\n  name<\/span> varchar<\/span>(<\/span>50<\/span>),<\/span>\r\n  primary<\/span> key<\/span>(<\/span>id<\/span>)<\/span>\r\n);<\/span>\r\n\r\nalter<\/span> table<\/span> type<\/span> add<\/span> unique<\/span>(<\/span>name<\/span>);<\/span>\r\n\r\ncreate<\/span> table<\/span> project<\/span>(<\/span>\r\n  id<\/span> varchar<\/span>(<\/span>36<\/span>),<\/span>\r\n  name<\/span> varchar<\/span>(<\/span>50<\/span>),<\/span>\r\n  type_id<\/span> varchar<\/span>(<\/span>36<\/span>),<\/span>\r\n  primary<\/span> key<\/span>(<\/span>id<\/span>),<\/span>\r\n  foreign<\/span> key<\/span>(<\/span>type_id<\/span>)<\/span> references<\/span> type<\/span>(<\/span>id<\/span>)<\/span>\r\n);<\/span>\r\n\r\nalter<\/span> table<\/span> project<\/span> add<\/span> unique<\/span>(<\/span>name<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u5c06\u5176\u5b9a\u4e49\u4e3aSpring Boot\u4e2d\u7684schema.sql\u6267\u884c\u3002<\/p>\n
\u8fd9\u4e2a\u662f\u5173\u4e8e\u4ec0\u4e48\u8bdd\u9898\u7684\u5462\uff1f\u662f\u5173\u4e8e\u81ea\u884c\u5bf9Spring\u9879\u76ee\u8fdb\u884c\u5206\u7c7b\u7684\u4e1c\u897f\u3002<\/p>\n
 <\/p>\n
\u4f8b\u5982\uff0c\u5982\u679c\u662f\u5728Spring Data\u7cfb\u5217\u4e2d\uff0c\u5c31\u5c06\u5176\u5f52\u7c7b\u4e3aSpring Data\u7c7b\u578b\uff1b\u800c\u5bf9\u4e8eSpring Framework\u6765\u8bf4\uff0c\u7531\u4e8e\u5b83\u662f\u9876\u7ea7\u9879\u76ee\uff0c\u6240\u4ee5\u6211\u4eec\u5c06\u5176\u5f52\u7c7b\u4e3aSpring Projects\u3002\u867d\u7136\u8fd9\u53ea\u662f\u4e00\u79cd\u968f\u610f\u7684\u5206\u7c7b\u65b9\u5f0f\uff0c\u4f46\u662f\u4ee5\u793a\u4f8b\u6570\u636e\u4e3a\u524d\u63d0\u3002<\/p>\n
\u5bf9\u4e8e\u7c7b\u578b\uff08type\uff09\u800c\u8a00\uff0c\u7531\u4e8e\u5b83\u662f\u4e0e\u9879\u76ee\uff08project\uff09\u7684\u76f8\u5173\u6570\u636e\u5173\u8054\u7684\uff0c\u6211\u4eec\u51b3\u5b9a\u5728\u63d2\u5165\u6570\u636e\u4e4b\u524d\u5148\u786e\u8ba4\uff08\u67e5\u8be2\uff09\u662f\u5426\u5df2\u5728\u6570\u636e\u5e93\u4e2d\u6ce8\u518c\u4e86\u4e0e\u9879\u76ee\u5173\u8054\u7684\u7c7b\u578b\uff08type\uff09\u3002
\n\u81f3\u4e8e\u9879\u76ee\uff08project\uff09\uff0c\u6211\u4eec\u4f1a\u6309\u7167\u6b63\u5e38\u6d41\u7a0b\u8fdb\u884c\u63d2\u5165\u64cd\u4f5c\u3002<\/p>\n
\u6211\u5e0c\u671b\u4ee5\u4ee5\u4e0b\u4e09\u4e2a\u5f62\u5f0f\u6765\u5c1d\u8bd5\u8fd9\u4e2a\u3002<\/p>\n
    \n
  • \n
      \u3075\u3064\u3046\u306b\u5b9f\u884c<\/ul>\n<\/li>\n<\/ul>\n
      MyBatis\u3067\u306fExecutorType#SIMPLE<\/p>\n
      \u8907\u6570\u884c\u306einsert\u3067\u5b9f\u884c
      \n\u30d0\u30c3\u30c1\u5b9f\u884c<\/p>\n
      MyBatis\u3067\u306fExecutorType#BATCH<\/p>\n
      \u9996\u5148\uff0c\u521b\u5efa\u4e00\u4e2a\u5c06\u8868\u6620\u5c04\u5230\u6a21\u578b\u7684\u6a21\u578b\u3002<\/p>\n
      \u9879\u76ee\u4e13\u7528\u3002<\/p>\n
      package<\/span> com.example.spring.mybatis.model<\/span>;<\/span>\r\n\r\npublic<\/span> class<\/span> Project<\/span> {<\/span>\r\n    private<\/span> String<\/span> id<\/span>;<\/span>\r\n    private<\/span> String<\/span> name<\/span>;<\/span>\r\n    private<\/span> String<\/span> typeId<\/span>;<\/span>\r\n\r\n    \/\/ getter\uff0fsetter\u306f\u7701\u7565<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
      \u9002\u7528\u4e8e\u7c7b\u578b\u3002<\/p>\n
      package<\/span> com.example.spring.mybatis.model<\/span>;<\/span>\r\n\r\npublic<\/span> class<\/span> Type<\/span> {<\/span>\r\n    private<\/span> String<\/span> id<\/span>;<\/span>\r\n    private<\/span> String<\/span> name<\/span>;<\/span>\r\n\r\n    \/\/ getter\uff0fsetter\u306f\u7701\u7565<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
      \u540c\u65f6\u8fd8\u521b\u5efa\u4e86Mapper\u548cXML\u6587\u4ef6\u3002<\/p>\n
      \u9879\u76ee\u7528\u9014\u3002<\/p>\n
      package<\/span> com.example.spring.mybatis.mapper<\/span>;<\/span>\r\n\r\nimport<\/span> java.util.List<\/span>;<\/span>\r\n\r\nimport<\/span> com.example.spring.mybatis.model.Project<\/span>;<\/span>\r\nimport<\/span> org.apache.ibatis.annotations.Mapper<\/span>;<\/span>\r\n\r\n@Mapper<\/span>\r\npublic<\/span> interface<\/span> ProjectMapper<\/span> {<\/span>\r\n    List<\/span><<\/span>Project<\/span>><\/span> selectOrderById<\/span>();<\/span>\r\n\r\n    int<\/span> insert<\/span>(<\/span>Project<\/span> project<\/span>);<\/span>\r\n\r\n    int<\/span> multiRowInsert<\/span>(<\/span>List<\/span><<\/span>Project<\/span>><\/span> projects<\/span>);<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
      <?xml version=\"1.0\" encoding=\"UTF-8\" ?><\/span>\r\n<!DOCTYPE mapper\r\n  PUBLIC \"-\/\/mybatis.org\/\/DTD Mapper 3.0\/\/EN\"\r\n  \"https:\/\/mybatis.org\/dtd\/mybatis-3-mapper.dtd\"><\/span>\r\n<mapper<\/span> namespace=<\/span>\"com.example.spring.mybatis.mapper.ProjectMapper\"<\/span>><\/span>\r\n  <select<\/span> id=<\/span>\"selectOrderById\"<\/span> resultType=<\/span>\"com.example.spring.mybatis.model.Project\"<\/span>><\/span>\r\n    select\r\n      id, name, type_id\r\n    from\r\n      project\r\n    order by\r\n      id asc\r\n  <\/select><\/span>\r\n  <insert<\/span> id=<\/span>\"insert\"<\/span>><\/span>\r\n    insert into\r\n      project(id, name, type_id)\r\n    values\r\n      (#{id}, #{name}, #{typeId})\r\n  <\/insert><\/span>\r\n  <insert<\/span> id=<\/span>\"multiRowInsert\"<\/span>><\/span>\r\n    insert into\r\n      project(id, name, type_id)\r\n    values\r\n\r\n    <foreach<\/span> collection=<\/span>\"projects\"<\/span> item=<\/span>\"project\"<\/span> separator=<\/span>\",\"<\/span>><\/span>\r\n      (#{project.id}, #{project.name}, #{project.typeId})\r\n    <\/foreach><\/span>\r\n  <\/insert><\/span>\r\n<\/mapper><\/span>\r\n<\/code><\/pre>\n
      \u6700\u540e\u90a3\u4e2a\u662f\u7528\u4e8e\u63d2\u5165\u591a\u884c\u7684\uff0c\u5bf9\u5417\uff1f\u597d\u50cf\u53ef\u4ee5\u4f7f\u7528foreach\u3002<\/p>\n
      \u8bf7\u770b\u4e0b\u5217\u4f8b\u5b50\u3002<\/p>\n
      \u6620\u5c04\u5668XML\u6587\u4ef6 \/ \u63d2\u5165\u3001\u66f4\u65b0\u548c\u5220\u9664<\/p>\n
      \u4ee5\u4e0b\u662fPostgreSQL\u7684insert\u8bed\u53e5\u8bed\u6cd5\u3002\u5176\u4e2d\u8fd8\u5305\u62ec\u4e86\u6709\u5173\u591a\u884c\u6570\u636e\u7684\u8bf4\u660e\u3002<\/p>\n
       <\/p>\n
      \u4e13\u4e3a\u7c7b\u578b\u8bbe\u8ba1\u3002<\/p>\n
      package<\/span> com.example.spring.mybatis.mapper<\/span>;<\/span>\r\n\r\nimport<\/span> java.util.List<\/span>;<\/span>\r\n\r\nimport<\/span> com.example.spring.mybatis.model.Type<\/span>;<\/span>\r\nimport<\/span> org.apache.ibatis.annotations.Mapper<\/span>;<\/span>\r\n\r\n@Mapper<\/span>\r\npublic<\/span> interface<\/span> TypeMapper<\/span> {<\/span>\r\n    Type<\/span> selectById<\/span>(<\/span>String<\/span> id<\/span>);<\/span>\r\n\r\n    List<\/span><<\/span>Type<\/span>><\/span> selectAllOrderById<\/span>();<\/span>\r\n\r\n    int<\/span> insert<\/span>(<\/span>Type<\/span> type<\/span>);<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
      <?xml version=\"1.0\" encoding=\"UTF-8\" ?><\/span>\r\n<!DOCTYPE mapper\r\n  PUBLIC \"-\/\/mybatis.org\/\/DTD Mapper 3.0\/\/EN\"\r\n  \"https:\/\/mybatis.org\/dtd\/mybatis-3-mapper.dtd\"><\/span>\r\n<mapper<\/span> namespace=<\/span>\"com.example.spring.mybatis.mapper.TypeMapper\"<\/span>><\/span>\r\n  <select<\/span> id=<\/span>\"selectById\"<\/span> resultType=<\/span>\"com.example.spring.mybatis.model.Type\"<\/span>><\/span>\r\n    select\r\n      id, name\r\n    from\r\n      type\r\n    where\r\n      id = #{id}\r\n  <\/select><\/span>\r\n  <select<\/span> id=<\/span>\"selectAllOrderById\"<\/span> resultType=<\/span>\"com.example.spring.mybatis.model.Type\"<\/span>><\/span>\r\n    select\r\n      id, name\r\n    from\r\n      type\r\n    order by\r\n      id asc\r\n  <\/select><\/span>\r\n  <insert<\/span> id=<\/span>\"insert\"<\/span>><\/span>\r\n    insert into\r\n      type(id, name)\r\n    values\r\n      (#{id}, #{name})\r\n  <\/insert><\/span>\r\n<\/mapper><\/span>\r\n<\/code><\/pre>\n
      \u8fd9\u91cc\u4e0d\u5305\u62ec\u591a\u884c\u63d2\u5165\u3002<\/p>\n
      \u6839\u636e\u9700\u6c42\uff0c\u6211\u4eec\u5c06\u521b\u5efa\u4e09\u4e2aService\u7c7b\uff08SimpleService\u3001MultiRowService\u3001BatchService\uff09\u6765\u4f7f\u7528\u8fd9\u4e9b\u7c7b\u3002\u5177\u4f53\u7684\u5b9e\u73b0\u4f1a\u5728\u4e4b\u540e\u9644\u4e0a\u3002<\/p>\n
      \u6211\u51b3\u5b9a\u7528JSON\u6587\u4ef6\u6765\u51c6\u5907\u6570\u636e\u3002<\/p>\n
      {<\/span>\r\n  \"mode\"<\/span>:<\/span> \"simple\"<\/span>,<\/span>\r\n  \"projects\"<\/span>:<\/span> [<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"a1899ae3-15d9-4bba-9a23-f09c01ade805\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring Boot\"<\/span>,<\/span>\r\n      \"typeId\"<\/span>:<\/span> \"fd49aa2c-a4cf-455f-aa7c-423ec259929e\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"c6696f16-d51c-47ff-b32b-796b160dccd0\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring Framework\"<\/span>,<\/span>\r\n      \"typeId\"<\/span>:<\/span> \"fd49aa2c-a4cf-455f-aa7c-423ec259929e\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"f335b6f5-933a-4ab9-9ed6-dc5bba3771e5\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring Cloud Bus\"<\/span>,<\/span>\r\n      \"typeId\"<\/span>:<\/span> \"9b27dca8-142e-4936-a91c-8aa0f97cabcd\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"ee7b6be0-63e6-45d6-8018-f08996a988db\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring Data JDBC\"<\/span>,<\/span>\r\n      \"typeId\"<\/span>:<\/span> \"da77ac10-3984-4c3a-b4d9-f45b0319ba90\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"d6d42307-1d65-47f3-afdc-1c44c9a81443\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring Data JPA\"<\/span>,<\/span>\r\n      \"typeId\"<\/span>:<\/span> \"da77ac10-3984-4c3a-b4d9-f45b0319ba90\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"f35d452e-bbd2-460f-84a6-99e942f2629f\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring Data MongoDB\"<\/span>,<\/span>\r\n      \"typeId\"<\/span>:<\/span> \"da77ac10-3984-4c3a-b4d9-f45b0319ba90\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"beafe138-aa76-443b-b575-7ddf54efbe96\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring Cloud Circuit Breaker\"<\/span>,<\/span>\r\n      \"typeId\"<\/span>:<\/span> \"9b27dca8-142e-4936-a91c-8aa0f97cabcd\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"ef50288e-6706-4062-ba9b-0133f2ee664a\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring Cloud Config\"<\/span>,<\/span>\r\n      \"typeId\"<\/span>:<\/span> \"9b27dca8-142e-4936-a91c-8aa0f97cabcd\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"0651cda2-cfcd-4fe2-8ac4-610e7372f797\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring Security\"<\/span>,<\/span>\r\n      \"typeId\"<\/span>:<\/span> \"fd49aa2c-a4cf-455f-aa7c-423ec259929e\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"d77be708-4542-439c-9250-c52d18479412\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring Data Redis\"<\/span>,<\/span>\r\n      \"typeId\"<\/span>:<\/span> \"da77ac10-3984-4c3a-b4d9-f45b0319ba90\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"d487ce9c-20e7-4a48-b72c-da048ebfead5\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring Data R2DBC\"<\/span>,<\/span>\r\n      \"typeId\"<\/span>:<\/span> \"da77ac10-3984-4c3a-b4d9-f45b0319ba90\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"25bb12b2-0780-4581-b335-12aeb211b6de\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring Cloud Gateway\"<\/span>,<\/span>\r\n      \"typeId\"<\/span>:<\/span> \"9b27dca8-142e-4936-a91c-8aa0f97cabcd\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"debd68cc-470b-4a63-a6e4-4a4264fd85b8\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring Session\"<\/span>,<\/span>\r\n      \"typeId\"<\/span>:<\/span> \"fd49aa2c-a4cf-455f-aa7c-423ec259929e\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"ee1e1213-e6fe-4f10-aed4-9920327c1b35\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring Data Elasticsearch\"<\/span>,<\/span>\r\n      \"typeId\"<\/span>:<\/span> \"da77ac10-3984-4c3a-b4d9-f45b0319ba90\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"0c7ad896-c207-44c8-b88f-c8f00d410430\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring Cloud Stream\"<\/span>,<\/span>\r\n      \"typeId\"<\/span>:<\/span> \"9b27dca8-142e-4936-a91c-8aa0f97cabcd\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"d64b621e-ef62-4727-ad9f-d9cfce11f2ba\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring Integration\"<\/span>,<\/span>\r\n      \"typeId\"<\/span>:<\/span> \"fd49aa2c-a4cf-455f-aa7c-423ec259929e\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"68cbceb4-99c2-4542-b085-8b47af964ade\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring Batch\"<\/span>,<\/span>\r\n      \"typeId\"<\/span>:<\/span> \"fd49aa2c-a4cf-455f-aa7c-423ec259929e\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"1d5409b3-1664-413d-a77d-82b97cd5991a\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring Data for Apache Cassandra\"<\/span>,<\/span>\r\n      \"typeId\"<\/span>:<\/span> \"da77ac10-3984-4c3a-b4d9-f45b0319ba90\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"1dc04ac2-c145-4fd0-b155-3e73490414f4\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring Data for Apache Solr\"<\/span>,<\/span>\r\n      \"typeId\"<\/span>:<\/span> \"da77ac10-3984-4c3a-b4d9-f45b0319ba90\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"0d03b65c-16a9-4902-b381-f7b8373cc696\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring Cloud Vault\"<\/span>,<\/span>\r\n      \"typeId\"<\/span>:<\/span> \"9b27dca8-142e-4936-a91c-8aa0f97cabcd\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"4199d05b-54b0-442d-ba8f-a93751908966\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring AMQP\"<\/span>,<\/span>\r\n      \"typeId\"<\/span>:<\/span> \"fd49aa2c-a4cf-455f-aa7c-423ec259929e\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"95552c7b-6458-4866-b151-18e6dce23d28\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring WebServices\"<\/span>,<\/span>\r\n      \"typeId\"<\/span>:<\/span> \"fd49aa2c-a4cf-455f-aa7c-423ec259929e\"<\/span>\r\n    }<\/span>\r\n  ],<\/span>\r\n  \"types\"<\/span>:<\/span> [<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"fd49aa2c-a4cf-455f-aa7c-423ec259929e\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring Projects\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"da77ac10-3984-4c3a-b4d9-f45b0319ba90\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring Data Projects\"<\/span>\r\n    },<\/span>\r\n    {<\/span>\r\n      \"id\"<\/span>:<\/span> \"9b27dca8-142e-4936-a91c-8aa0f97cabcd\"<\/span>,<\/span>\r\n      \"name\"<\/span>:<\/span> \"Spring Cloud Projects\"<\/span>\r\n    }<\/span>\r\n  ]<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
      \u5728mode\u4e2d\uff0c\u6211\u4eec\u51b3\u5b9a\u6307\u5b9a\u8fd0\u884c\u7684\u6a21\u5f0f\u3002<\/p>\n
      \u521b\u5efa\u4e00\u4e2a\u5c06\u5176\u6620\u5c04\u7684\u7c7b\u3002<\/p>\n
      package<\/span> com.example.spring.mybatis<\/span>;<\/span>\r\n\r\nimport<\/span> java.util.List<\/span>;<\/span>\r\n\r\nimport<\/span> com.example.spring.mybatis.model.Project<\/span>;<\/span>\r\nimport<\/span> com.example.spring.mybatis.model.Type<\/span>;<\/span>\r\n\r\npublic<\/span> class<\/span> Data<\/span> {<\/span>\r\n    private<\/span> String<\/span> mode<\/span>;<\/span>\r\n    private<\/span> List<\/span><<\/span>Project<\/span>><\/span> projects<\/span>;<\/span>\r\n    private<\/span> List<\/span><<\/span>Type<\/span>><\/span> types<\/span>;<\/span>\r\n\r\n    \/\/ getter\uff0fsetter\u306f\u7701\u7565<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
      \u4e00\u4e2a\u5e26\u6709main\u65b9\u6cd5\u7684\u7c7b\u3002<\/p>\n
      package<\/span> com.example.spring.mybatis<\/span>;<\/span>\r\n\r\nimport<\/span> java.util.List<\/span>;<\/span>\r\nimport<\/span> java.util.Map<\/span>;<\/span>\r\nimport<\/span> java.util.function.Function<\/span>;<\/span>\r\nimport<\/span> java.util.stream.Collectors<\/span>;<\/span>\r\n\r\nimport<\/span> com.example.spring.mybatis.mapper.ProjectMapper<\/span>;<\/span>\r\nimport<\/span> com.example.spring.mybatis.mapper.TypeMapper<\/span>;<\/span>\r\nimport<\/span> com.example.spring.mybatis.model.Project<\/span>;<\/span>\r\nimport<\/span> com.example.spring.mybatis.model.Type<\/span>;<\/span>\r\nimport<\/span> com.example.spring.mybatis.service.BatchService<\/span>;<\/span>\r\nimport<\/span> com.example.spring.mybatis.service.MultiRowService<\/span>;<\/span>\r\nimport<\/span> com.example.spring.mybatis.service.SimpleService<\/span>;<\/span>\r\nimport<\/span> com.fasterxml.jackson.databind.ObjectMapper<\/span>;<\/span>\r\nimport<\/span> org.springframework.beans.factory.annotation.Autowired<\/span>;<\/span>\r\nimport<\/span> org.springframework.beans.factory.annotation.Value<\/span>;<\/span>\r\nimport<\/span> org.springframework.boot.ApplicationArguments<\/span>;<\/span>\r\nimport<\/span> org.springframework.boot.ApplicationRunner<\/span>;<\/span>\r\nimport<\/span> org.springframework.boot.SpringApplication<\/span>;<\/span>\r\nimport<\/span> org.springframework.boot.autoconfigure.SpringBootApplication<\/span>;<\/span>\r\nimport<\/span> org.springframework.core.io.Resource<\/span>;<\/span>\r\n\r\n@SpringBootApplication<\/span>\r\npublic<\/span> class<\/span> App<\/span> implements<\/span> ApplicationRunner<\/span> {<\/span>\r\n    @Value<\/span>(<\/span>\"classpath:data.json\"<\/span>)<\/span>\r\n    private<\/span> Resource<\/span> dataJson<\/span>;<\/span>\r\n\r\n    @Autowired<\/span>\r\n    private<\/span> SimpleService<\/span> simpleService<\/span>;<\/span>\r\n    @Autowired<\/span>\r\n    private<\/span> MultiRowService<\/span> multiRowService<\/span>;<\/span>\r\n    @Autowired<\/span>\r\n    private<\/span> BatchService<\/span> batchService<\/span>;<\/span>\r\n\r\n    @Autowired<\/span>\r\n    private<\/span> ProjectMapper<\/span> projectMapper<\/span>;<\/span>\r\n    @Autowired<\/span>\r\n    private<\/span> TypeMapper<\/span> typeMapper<\/span>;<\/span>\r\n\r\n    public<\/span> static<\/span> void<\/span> main<\/span>(<\/span>String<\/span>...<\/span> args<\/span>)<\/span> {<\/span>\r\n        SpringApplication<\/span>.<\/span>run<\/span>(<\/span>App<\/span>.<\/span>class<\/span>,<\/span> args<\/span>);<\/span>\r\n    }<\/span>\r\n\r\n    @Override<\/span>\r\n    public<\/span> void<\/span> run<\/span>(<\/span>ApplicationArguments<\/span> args<\/span>)<\/span> throws<\/span> Exception<\/span> {<\/span>\r\n        ObjectMapper<\/span> objectMapper<\/span> =<\/span> new<\/span> ObjectMapper<\/span>();<\/span>\r\n        Data<\/span> data<\/span> =<\/span> objectMapper<\/span>.<\/span>readValue<\/span>(<\/span>dataJson<\/span>.<\/span>getInputStream<\/span>(),<\/span> Data<\/span>.<\/span>class<\/span>);<\/span>\r\n\r\n        List<\/span><<\/span>Project<\/span>><\/span> projects<\/span> =<\/span> data<\/span>.<\/span>getProjects<\/span>();<\/span>\r\n        Map<\/span><<\/span>String<\/span>,<\/span> Type<\/span>><\/span> types<\/span> =<\/span> data<\/span>.<\/span>getTypes<\/span>().<\/span>stream<\/span>().<\/span>collect<\/span>(<\/span>Collectors<\/span>.<\/span>toMap<\/span>(<\/span>type<\/span> -><\/span> type<\/span>.<\/span>getId<\/span>(),<\/span> type<\/span> -><\/span> type<\/span>));<\/span>\r\n\r\n        System<\/span>.<\/span>out<\/span>.<\/span>printf<\/span>(<\/span>\"execution mode = %s%n\"<\/span>,<\/span> data<\/span>.<\/span>getMode<\/span>());<\/span>\r\n\r\n        switch<\/span> (<\/span>data<\/span>.<\/span>getMode<\/span>())<\/span> {<\/span>\r\n            case<\/span> \"simple\"<\/span> -><\/span> simpleService<\/span>.<\/span>insert<\/span>(<\/span>projects<\/span>,<\/span> types<\/span>);<\/span>\r\n            case<\/span> \"multiRow\"<\/span> -><\/span> multiRowService<\/span>.<\/span>insert<\/span>(<\/span>projects<\/span>,<\/span> types<\/span>);<\/span>\r\n            case<\/span> \"batch\"<\/span> -><\/span> batchService<\/span>.<\/span>insert<\/span>(<\/span>projects<\/span>,<\/span> types<\/span>);<\/span>\r\n        }<\/span>\r\n\r\n        \/\/ \u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u5916<\/span>\r\n        List<\/span><<\/span>Project<\/span>><\/span> savedProjects<\/span> =<\/span> projectMapper<\/span>.<\/span>selectOrderById<\/span>();<\/span>\r\n        List<\/span><<\/span>Type<\/span>><\/span> savedTypesAsList<\/span> =<\/span> typeMapper<\/span>.<\/span>selectAllOrderById<\/span>();<\/span>\r\n        Map<\/span><<\/span>String<\/span>,<\/span> Type<\/span>><\/span> savedTypes<\/span> =<\/span> savedTypesAsList<\/span>.<\/span>stream<\/span>().<\/span>collect<\/span>(<\/span>Collectors<\/span>.<\/span>toMap<\/span>(<\/span>type<\/span> -><\/span> type<\/span>.<\/span>getId<\/span>(),<\/span> Function<\/span>.<\/span>identity<\/span>()));<\/span>\r\n\r\n        savedProjects<\/span>.<\/span>forEach<\/span>(<\/span>project<\/span> -><\/span> {<\/span>\r\n            Type<\/span> type<\/span> =<\/span> savedTypes<\/span>.<\/span>get<\/span>(<\/span>project<\/span>.<\/span>getTypeId<\/span>());<\/span>\r\n            System<\/span>.<\/span>out<\/span>.<\/span>printf<\/span>(<\/span>\"project name = %s, type name = %s%n\"<\/span>,<\/span> project<\/span>.<\/span>getName<\/span>(),<\/span> type<\/span>.<\/span>getName<\/span>());<\/span>\r\n        });<\/span>\r\n\r\n        System<\/span>.<\/span>out<\/span>.<\/span>printf<\/span>(<\/span>\"count, projects = %d, types = %d%n\"<\/span>,<\/span> savedProjects<\/span>.<\/span>size<\/span>(),<\/span> savedTypesAsList<\/span>.<\/span>size<\/span>());<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
      \u89e3\u6790JSON\u6587\u4ef6\u4e4b\u540e<\/p>\n
              ObjectMapper<\/span> objectMapper<\/span> =<\/span> new<\/span> ObjectMapper<\/span>();<\/span>\r\n        Data<\/span> data<\/span> =<\/span> objectMapper<\/span>.<\/span>readValue<\/span>(<\/span>dataJson<\/span>.<\/span>getInputStream<\/span>(),<\/span> Data<\/span>.<\/span>class<\/span>);<\/span>\r\n\r\n        List<\/span><<\/span>Project<\/span>><\/span> projects<\/span> =<\/span> data<\/span>.<\/span>getProjects<\/span>();<\/span>\r\n        Map<\/span><<\/span>String<\/span>,<\/span> Type<\/span>><\/span> types<\/span> =<\/span> data<\/span>.<\/span>getTypes<\/span>().<\/span>stream<\/span>().<\/span>collect<\/span>(<\/span>Collectors<\/span>.<\/span>toMap<\/span>(<\/span>type<\/span> -><\/span> type<\/span>.<\/span>getId<\/span>(),<\/span> type<\/span> -><\/span> type<\/span>));<\/span>\r\n<\/code><\/pre>\n
      \u6839\u636e\u6267\u884c\u6a21\u5f0f\uff0c\u8fdb\u884cService\u7c7b\u7684\u8c03\u7528\u5207\u6362\u3002<\/p>\n
              switch<\/span> (<\/span>data<\/span>.<\/span>getMode<\/span>())<\/span> {<\/span>\r\n            case<\/span> \"simple\"<\/span> -><\/span> simpleService<\/span>.<\/span>insert<\/span>(<\/span>projects<\/span>,<\/span> types<\/span>);<\/span>\r\n            case<\/span> \"multiRow\"<\/span> -><\/span> multiRowService<\/span>.<\/span>insert<\/span>(<\/span>projects<\/span>,<\/span> types<\/span>);<\/span>\r\n            case<\/span> \"batch\"<\/span> -><\/span> batchService<\/span>.<\/span>insert<\/span>(<\/span>projects<\/span>,<\/span> types<\/span>);<\/span>\r\n        }<\/span>\r\n<\/code><\/pre>\n
      \u6700\u540e\uff0c\u786e\u8ba4\u7ed3\u679c\u3002<\/p>\n
              \/\/ \u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u5916<\/span>\r\n        List<\/span><<\/span>Project<\/span>><\/span> savedProjects<\/span> =<\/span> projectMapper<\/span>.<\/span>selectOrderById<\/span>();<\/span>\r\n        List<\/span><<\/span>Type<\/span>><\/span> savedTypesAsList<\/span> =<\/span> typeMapper<\/span>.<\/span>selectAllOrderById<\/span>();<\/span>\r\n        Map<\/span><<\/span>String<\/span>,<\/span> Type<\/span>><\/span> savedTypes<\/span> =<\/span> savedTypesAsList<\/span>.<\/span>stream<\/span>().<\/span>collect<\/span>(<\/span>Collectors<\/span>.<\/span>toMap<\/span>(<\/span>type<\/span> -><\/span> type<\/span>.<\/span>getId<\/span>(),<\/span> Function<\/span>.<\/span>identity<\/span>()));<\/span>\r\n\r\n        savedProjects<\/span>.<\/span>forEach<\/span>(<\/span>project<\/span> -><\/span> {<\/span>\r\n            Type<\/span> type<\/span> =<\/span> savedTypes<\/span>.<\/span>get<\/span>(<\/span>project<\/span>.<\/span>getTypeId<\/span>());<\/span>\r\n            System<\/span>.<\/span>out<\/span>.<\/span>printf<\/span>(<\/span>\"project name = %s, type name = %s%n\"<\/span>,<\/span> project<\/span>.<\/span>getName<\/span>(),<\/span> type<\/span>.<\/span>getName<\/span>());<\/span>\r\n        });<\/span>\r\n\r\n        System<\/span>.<\/span>out<\/span>.<\/span>printf<\/span>(<\/span>\"count, projects = %d, types = %d%n\"<\/span>,<\/span> savedProjects<\/span>.<\/span>size<\/span>(),<\/span> savedTypesAsList<\/span>.<\/span>size<\/span>());<\/span>\r\n<\/code><\/pre>\n
      \u65e0\u8bba\u4ee5\u54ea\u79cd\u6a21\u5f0f\u6267\u884c\uff0c\u7ed3\u679c\u90fd\u5e94\u8be5\u4fdd\u6301\u4e00\u81f4\u3002<\/p>\n
      Spring Boot\u7684\u914d\u7f6e\u6587\u4ef6\u3002<\/p>\n
      spring.datasource.url<\/span>=<\/span>jdbc:postgresql:\/\/localhost:5432\/example<\/span>\r\nspring.datasource.username<\/span>=<\/span>charon<\/span>\r\nspring.datasource.password<\/span>=<\/span>password<\/span>\r\n\r\nspring.sql.init.mode<\/span>=<\/span>always<\/span>\r\n\r\nmybatis.configuration.map-underscore-to-camel-case<\/span>=<\/span>true<\/span>\r\n<\/code><\/pre>\n
      \u6bcf\u6b21\u6211\u51b3\u5b9a\u6267\u884cDDL\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u6211\u6bcf\u6b21\u90fd\u4f1a\u5220\u9664\u5e76\u521b\u5efa\u8868\u3002<\/p>\n
      \u786e\u8ba4<\/h1>\n
      \u5728\u5305\u542b\u6bcf\u4e2aService\u7c7b\u7684\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u5c06\u8fdb\u884c\u786e\u8ba4\u3002
      \n\u6bcf\u4e2aService\u90fd\u5c06\u6709\u4e8b\u52a1\u8fb9\u754c\uff08\u5728\u65b9\u6cd5\u4e0a\u6807\u6ce8@Transactional\uff09\u3002<\/p>\n
      \u6b63\u5e38\u6267\u884c<\/h2>\n
      \u6211\u4f1a\u5148\u5c1d\u8bd5\u666e\u901a\u5730\u6267\u884c\u3002<\/p>\n
      \u4ee5\u4e0b\u662f\u76f8\u5e94\u7684Service\u7c7b\u3002<\/p>\n
      package<\/span> com.example.spring.mybatis.service<\/span>;<\/span>\r\n\r\nimport<\/span> java.util.List<\/span>;<\/span>\r\nimport<\/span> java.util.Map<\/span>;<\/span>\r\n\r\nimport<\/span> com.example.spring.mybatis.mapper.ProjectMapper<\/span>;<\/span>\r\nimport<\/span> com.example.spring.mybatis.mapper.TypeMapper<\/span>;<\/span>\r\nimport<\/span> com.example.spring.mybatis.model.Project<\/span>;<\/span>\r\nimport<\/span> com.example.spring.mybatis.model.Type<\/span>;<\/span>\r\nimport<\/span> org.springframework.stereotype.Service<\/span>;<\/span>\r\nimport<\/span> org.springframework.transaction.annotation.Transactional<\/span>;<\/span>\r\n\r\n@Service<\/span>\r\npublic<\/span> class<\/span> SimpleService<\/span> {<\/span>\r\n    private<\/span> ProjectMapper<\/span> projectMapper<\/span>;<\/span>\r\n    private<\/span> TypeMapper<\/span> typeMapper<\/span>;<\/span>\r\n\r\n    public<\/span> SimpleService<\/span>(<\/span>ProjectMapper<\/span> projectMapper<\/span>,<\/span> TypeMapper<\/span> typeMapper<\/span>)<\/span> {<\/span>\r\n        this<\/span>.<\/span>projectMapper<\/span> =<\/span> projectMapper<\/span>;<\/span>\r\n        this<\/span>.<\/span>typeMapper<\/span> =<\/span> typeMapper<\/span>;<\/span>\r\n    }<\/span>\r\n\r\n    @Transactional<\/span>\r\n    public<\/span> void<\/span> insert<\/span>(<\/span>List<\/span><<\/span>Project<\/span>><\/span> projects<\/span>,<\/span> Map<\/span><<\/span>String<\/span>,<\/span> Type<\/span>><\/span> types<\/span>)<\/span> {<\/span>\r\n        for<\/span> (<\/span>Project<\/span> project<\/span> :<\/span> projects<\/span>)<\/span> {<\/span>\r\n            Type<\/span> type<\/span> =<\/span> types<\/span>.<\/span>get<\/span>(<\/span>project<\/span>.<\/span>getTypeId<\/span>());<\/span>\r\n\r\n            if<\/span> (<\/span>typeMapper<\/span>.<\/span>selectById<\/span>(<\/span>type<\/span>.<\/span>getId<\/span>())<\/span> ==<\/span> null<\/span>)<\/span> {<\/span>\r\n                typeMapper<\/span>.<\/span>insert<\/span>(<\/span>type<\/span>);<\/span>\r\n            }<\/span>\r\n\r\n            projectMapper<\/span>.<\/span>insert<\/span>(<\/span>project<\/span>);<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
      \u5982\u679c\u5728\u8868\u4e2d\u627e\u4e0d\u5230\u8be5\u7c7b\u578b\uff0c\u5219\u8fdb\u884c\u63d2\u5165\u3002\u8fd9\u5728\u5176\u4ed6\u60c5\u51b5\u4e0b\u4e5f\u662f\u76f8\u540c\u7684\u64cd\u4f5c\u3002<\/p>\n
                  if<\/span> (<\/span>typeMapper<\/span>.<\/span>selectById<\/span>(<\/span>type<\/span>.<\/span>getId<\/span>())<\/span> ==<\/span> null<\/span>)<\/span> {<\/span>\r\n                typeMapper<\/span>.<\/span>insert<\/span>(<\/span>type<\/span>);<\/span>\r\n            }<\/span>\r\n<\/code><\/pre>\n
      \u8fd9\u4e2a\u503c\u662fdata.json\u7684\u6a21\u5f0f\u3002<\/p>\n
      {<\/span>\r\n  \"mode\"<\/span>:<\/span> \"simple\"<\/span>,<\/span>\r\n<\/code><\/pre>\n
      \u53ea\u4f1a\u5c55\u793a\u6267\u884c\u7ed3\u679c\uff08\u9664\u4e86\u6a21\u5f0f\u4ee5\u5916\uff0c\u5176\u4f59\u90fd\u4f1a\u663e\u793a\u76f8\u540c\u7684\u5185\u5bb9\uff09\u3002<\/p>\n
      execution mode =<\/span> simple\r\nproject name =<\/span> Spring Security, type <\/span>name =<\/span> Spring Projects\r\nproject name =<\/span> Spring Cloud Stream, type <\/span>name =<\/span> Spring Cloud Projects\r\nproject name =<\/span> Spring Cloud Vault, type <\/span>name =<\/span> Spring Cloud Projects\r\nproject name =<\/span> Spring Data for <\/span>Apache Cassandra, type <\/span>name =<\/span> Spring Data Projects\r\nproject name =<\/span> Spring Data for <\/span>Apache Solr, type <\/span>name =<\/span> Spring Data Projects\r\nproject name =<\/span> Spring Cloud Gateway, type <\/span>name =<\/span> Spring Cloud Projects\r\nproject name =<\/span> Spring AMQP, type <\/span>name =<\/span> Spring Projects\r\nproject name =<\/span> Spring Batch, type <\/span>name =<\/span> Spring Projects\r\nproject name =<\/span> Spring WebServices, type <\/span>name =<\/span> Spring Projects\r\nproject name =<\/span> Spring Boot, type <\/span>name =<\/span> Spring Projects\r\nproject name =<\/span> Spring Cloud Circuit Breaker, type <\/span>name =<\/span> Spring Cloud Projects\r\nproject name =<\/span> Spring Framework, type <\/span>name =<\/span> Spring Projects\r\nproject name =<\/span> Spring Data R2DBC, type <\/span>name =<\/span> Spring Data Projects\r\nproject name =<\/span> Spring Integration, type <\/span>name =<\/span> Spring Projects\r\nproject name =<\/span> Spring Data JPA, type <\/span>name =<\/span> Spring Data Projects\r\nproject name =<\/span> Spring Data Redis, type <\/span>name =<\/span> Spring Data Projects\r\nproject name =<\/span> Spring Session, type <\/span>name =<\/span> Spring Projects\r\nproject name =<\/span> Spring Data Elasticsearch, type <\/span>name =<\/span> Spring Data Projects\r\nproject name =<\/span> Spring Data JDBC, type <\/span>name =<\/span> Spring Data Projects\r\nproject name =<\/span> Spring Cloud Config, type <\/span>name =<\/span> Spring Cloud Projects\r\nproject name =<\/span> Spring Cloud Bus, type <\/span>name =<\/span> Spring Cloud Projects\r\nproject name =<\/span> Spring Data MongoDB, type <\/span>name =<\/span> Spring Data Projects\r\ncount, projects =<\/span> 22, types =<\/span> 3\r\n<\/code><\/pre>\n
      \u4ee5\u6b64\u4e3a\u57fa\u7840\u3002<\/p>\n
      \u8fdb\u884c\u591a\u884c\u63d2\u5165<\/h2>\n
      \u4e00\u4e2aService\u7c7b\uff0c\u7528\u6765\u8fdb\u884c\u591a\u884c\u63d2\u5165\u64cd\u4f5c\u3002<\/p>\n
      package<\/span> com.example.spring.mybatis.service<\/span>;<\/span>\r\n\r\nimport<\/span> java.util.ArrayList<\/span>;<\/span>\r\nimport<\/span> java.util.List<\/span>;<\/span>\r\nimport<\/span> java.util.Map<\/span>;<\/span>\r\n\r\nimport<\/span> com.example.spring.mybatis.mapper.ProjectMapper<\/span>;<\/span>\r\nimport<\/span> com.example.spring.mybatis.mapper.TypeMapper<\/span>;<\/span>\r\nimport<\/span> com.example.spring.mybatis.model.Project<\/span>;<\/span>\r\nimport<\/span> com.example.spring.mybatis.model.Type<\/span>;<\/span>\r\nimport<\/span> org.springframework.stereotype.Service<\/span>;<\/span>\r\nimport<\/span> org.springframework.transaction.annotation.Transactional<\/span>;<\/span>\r\n\r\n@Service<\/span>\r\npublic<\/span> class<\/span> MultiRowService<\/span> {<\/span>\r\n    private<\/span> ProjectMapper<\/span> projectMapper<\/span>;<\/span>\r\n    private<\/span> TypeMapper<\/span> typeMapper<\/span>;<\/span>\r\n\r\n    public<\/span> MultiRowService<\/span>(<\/span>ProjectMapper<\/span> projectMapper<\/span>,<\/span> TypeMapper<\/span> typeMapper<\/span>)<\/span> {<\/span>\r\n        this<\/span>.<\/span>projectMapper<\/span> =<\/span> projectMapper<\/span>;<\/span>\r\n        this<\/span>.<\/span>typeMapper<\/span> =<\/span> typeMapper<\/span>;<\/span>\r\n    }<\/span>\r\n\r\n    @Transactional<\/span>\r\n    public<\/span> void<\/span> insert<\/span>(<\/span>List<\/span><<\/span>Project<\/span>><\/span> projects<\/span>,<\/span> Map<\/span><<\/span>String<\/span>,<\/span> Type<\/span>><\/span> types<\/span>)<\/span> {<\/span>\r\n        int<\/span> rowThreshold<\/span> =<\/span> 3<\/span>;<\/span>\r\n\r\n        List<\/span><<\/span>Project<\/span>><\/span> multiInsertProjects<\/span> =<\/span> new<\/span> ArrayList<\/span><>();<\/span>\r\n        int<\/span> counter<\/span> =<\/span> 0<\/span>;<\/span>\r\n\r\n        for<\/span> (<\/span>Project<\/span> project<\/span> :<\/span> projects<\/span>)<\/span> {<\/span>\r\n            counter<\/span>++;<\/span>\r\n\r\n            multiInsertProjects<\/span>.<\/span>add<\/span>(<\/span>project<\/span>);<\/span>\r\n\r\n            Type<\/span> type<\/span> =<\/span> types<\/span>.<\/span>get<\/span>(<\/span>project<\/span>.<\/span>getTypeId<\/span>());<\/span>\r\n\r\n            if<\/span> (<\/span>typeMapper<\/span>.<\/span>selectById<\/span>(<\/span>type<\/span>.<\/span>getId<\/span>())<\/span> ==<\/span> null<\/span>)<\/span> {<\/span>\r\n                typeMapper<\/span>.<\/span>insert<\/span>(<\/span>type<\/span>);<\/span>\r\n            }<\/span>\r\n\r\n            if<\/span> (<\/span>counter<\/span> %<\/span> rowThreshold<\/span> ==<\/span> 0<\/span>)<\/span> {<\/span>\r\n                projectMapper<\/span>.<\/span>multiRowInsert<\/span>(<\/span>multiInsertProjects<\/span>);<\/span>\r\n                multiInsertProjects<\/span> =<\/span> new<\/span> ArrayList<\/span><>();<\/span>\r\n            }<\/span>\r\n        }<\/span>\r\n\r\n        if<\/span> (!<\/span>multiInsertProjects<\/span>.<\/span>isEmpty<\/span>())<\/span> {<\/span>\r\n            projectMapper<\/span>.<\/span>multiRowInsert<\/span>(<\/span>multiInsertProjects<\/span>);<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
      \u5728\u6307\u5b9a\u7684\u8bb0\u5f55\u6570\u91cf\u8fbe\u5230\u65f6\uff0c\u5c06\u591a\u884c\u63d2\u5165\u3002<\/p>\n
                  if<\/span> (<\/span>counter<\/span> %<\/span> rowThreshold<\/span> ==<\/span> 0<\/span>)<\/span> {<\/span>\r\n                projectMapper<\/span>.<\/span>multiRowInsert<\/span>(<\/span>multiInsertProjects<\/span>);<\/span>\r\n                multiInsertProjects<\/span> =<\/span> new<\/span> ArrayList<\/span><>();<\/span>\r\n            }<\/span>\r\n<\/code><\/pre>\n
      \u5728Mapper\u548cXML\u6587\u4ef6\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u5206\u522b\u627e\u5230\u4ee5\u4e0b\u5185\u5bb9\u3002<\/p>\n
          int<\/span> multiRowInsert<\/span>(<\/span>List<\/span><<\/span>Project<\/span>><\/span> projects<\/span>);<\/span>\r\n<\/code><\/pre>\n
        <insert<\/span> id=<\/span>\"multiRowInsert\"<\/span>><\/span>\r\n    insert into\r\n      project(id, name, type_id)\r\n    values\r\n    \r\n    <foreach<\/span> collection=<\/span>\"projects\"<\/span> item=<\/span>\"project\"<\/span> separator=<\/span>\",\"<\/span>><\/span>\r\n      (#{project.id}, #{project.name}, #{project.typeId})\r\n    <\/foreach><\/span>\r\n  <\/insert><\/span>\r\n<\/code><\/pre>\n
      data.json\u6587\u4ef6\u7684mode\u662f\u6309\u7167\u8fd9\u4e2a\u503c\u6267\u884c\u3002<\/p>\n
      {\r\n  \"mode\": \"multiRow\",\r\n<\/code><\/pre>\n
      \u6267\u884c\u540e\uff0c\u60a8\u5e94\u8be5\u80fd\u591f\u5728PostgreSQL\u7684\u65e5\u5fd7\u4e2d\u786e\u8ba4\u4ee5\u4e0b\u591a\u884cinsert\u8bed\u53e5\u7684\u5b58\u5728\u3002<\/p>\n
      2023-01-22 13:19:21.454 UTC [<\/span>784] LOG:  execute <unnamed>: insert into\r\n              project(<\/span>id<\/span>, name, type_id)<\/span>\r\n            values\r\n\r\n\r\n              (<\/span>$1<\/span>, $2<\/span>, $3<\/span>)<\/span>\r\n             ,\r\n              (<\/span>$4<\/span>, $5<\/span>, $6<\/span>)<\/span>\r\n             ,\r\n              (<\/span>$7<\/span>, $8<\/span>, $9<\/span>)<\/span>\r\n2023-01-22 13:19:21.454 UTC [<\/span>784] DETAIL:  parameters: $1<\/span> =<\/span> 'a1899ae3-15d9-4bba-9a23-f09c01ade805'<\/span>, $2<\/span> =<\/span> 'Spring Boot'<\/span>, $3<\/span> =<\/span> 'fd49aa2c-a4cf-455f-aa7c-423ec259929e'<\/span>, $4<\/span> =<\/span> 'c6696f16-d51c-47ff-b32b-796b160dccd0'<\/span>, $5<\/span> =<\/span> 'Spring Framework'<\/span>, $6<\/span> =<\/span> 'fd49aa2c-a4cf-455f-aa7c-423ec259929e'<\/span>, $7<\/span> =<\/span> 'f335b6f5-933a-4ab9-9ed6-dc5bba3771e5'<\/span>, $8<\/span> =<\/span> 'Spring Cloud Bus'<\/span>, $9<\/span> =<\/span> '9b27dca8-142e-4936-a91c-8aa0f97cabcd'<\/span>\r\n<\/code><\/pre>\n
      \u6279\u91cf\u66f4\u65b0<\/h2>\n
      \u6700\u540e\u662f\u6279\u91cf\u66f4\u65b0\u3002\u76f8\u5e94\u7684Service\u7c7b\u5728\u8fd9\u91cc\u3002<\/p>\n
      package<\/span> com.example.spring.mybatis.service<\/span>;<\/span>\r\n\r\nimport<\/span> java.util.List<\/span>;<\/span>\r\nimport<\/span> java.util.Map<\/span>;<\/span>\r\n\r\nimport<\/span> com.example.spring.mybatis.mapper.ProjectMapper<\/span>;<\/span>\r\nimport<\/span> com.example.spring.mybatis.mapper.TypeMapper<\/span>;<\/span>\r\nimport<\/span> com.example.spring.mybatis.model.Project<\/span>;<\/span>\r\nimport<\/span> com.example.spring.mybatis.model.Type<\/span>;<\/span>\r\nimport<\/span> org.apache.ibatis.executor.BatchResult<\/span>;<\/span>\r\nimport<\/span> org.apache.ibatis.session.ExecutorType<\/span>;<\/span>\r\nimport<\/span> org.apache.ibatis.session.SqlSessionFactory<\/span>;<\/span>\r\nimport<\/span> org.mybatis.spring.SqlSessionTemplate<\/span>;<\/span>\r\nimport<\/span> org.springframework.stereotype.Service<\/span>;<\/span>\r\nimport<\/span> org.springframework.transaction.annotation.Transactional<\/span>;<\/span>\r\n\r\n@Service<\/span>\r\npublic<\/span> class<\/span> BatchService<\/span> {<\/span>\r\n    private<\/span> SqlSessionTemplate<\/span> sqlSessionTemplate<\/span>;<\/span>\r\n    private<\/span> ProjectMapper<\/span> projectMapper<\/span>;<\/span>\r\n    private<\/span> TypeMapper<\/span> typeMapper<\/span>;<\/span>\r\n\r\n    public<\/span> BatchService<\/span>(<\/span>SqlSessionFactory<\/span> sqlSessionFactory<\/span>)<\/span> {<\/span>\r\n        this<\/span>.<\/span>sqlSessionTemplate<\/span> =<\/span> new<\/span> SqlSessionTemplate<\/span>(<\/span>sqlSessionFactory<\/span>,<\/span> ExecutorType<\/span>.<\/span>BATCH<\/span>);<\/span>\r\n        this<\/span>.<\/span>projectMapper<\/span> =<\/span> sqlSessionTemplate<\/span>.<\/span>getMapper<\/span>(<\/span>ProjectMapper<\/span>.<\/span>class<\/span>);<\/span>\r\n\r\n        this<\/span>.<\/span>typeMapper<\/span> =<\/span> sqlSessionTemplate<\/span>.<\/span>getMapper<\/span>(<\/span>TypeMapper<\/span>.<\/span>class<\/span>);<\/span>\r\n    }<\/span>\r\n\r\n    @Transactional<\/span>\r\n    public<\/span> void<\/span> insert<\/span>(<\/span>List<\/span><<\/span>Project<\/span>><\/span> projects<\/span>,<\/span> Map<\/span><<\/span>String<\/span>,<\/span> Type<\/span>><\/span> types<\/span>)<\/span> {<\/span>\r\n        int<\/span> rowThreshold<\/span> =<\/span> 3<\/span>;<\/span>\r\n        int<\/span> counter<\/span> =<\/span> 0<\/span>;<\/span>\r\n\r\n        for<\/span> (<\/span>Project<\/span> project<\/span> :<\/span> projects<\/span>)<\/span> {<\/span>\r\n            counter<\/span>++;<\/span>\r\n\r\n            Type<\/span> type<\/span> =<\/span> types<\/span>.<\/span>get<\/span>(<\/span>project<\/span>.<\/span>getTypeId<\/span>());<\/span>\r\n\r\n            if<\/span> (<\/span>typeMapper<\/span>.<\/span>selectById<\/span>(<\/span>type<\/span>.<\/span>getId<\/span>())<\/span> ==<\/span> null<\/span>)<\/span> {<\/span>\r\n                typeMapper<\/span>.<\/span>insert<\/span>(<\/span>type<\/span>);<\/span>\r\n            }<\/span>\r\n\r\n            projectMapper<\/span>.<\/span>insert<\/span>(<\/span>project<\/span>);<\/span>\r\n\r\n            if<\/span> (<\/span>counter<\/span> %<\/span> rowThreshold<\/span> ==<\/span> 0<\/span>)<\/span> {<\/span>\r\n                List<\/span><<\/span>BatchResult<\/span>><\/span> batchResults<\/span> =<\/span> sqlSessionTemplate<\/span>.<\/span>flushStatements<\/span>();<\/span>\r\n                batchResults<\/span>.<\/span>stream<\/span>().<\/span>forEach<\/span>(<\/span>result<\/span> -><\/span> {<\/span>\r\n                    for<\/span> (<\/span>int<\/span> updated<\/span> :<\/span> result<\/span>.<\/span>getUpdateCounts<\/span>())<\/span> {<\/span>\r\n                        if<\/span> (<\/span>updated<\/span> <<\/span> 1<\/span>)<\/span> {<\/span>\r\n                            throw<\/span> new<\/span> RuntimeException<\/span>(<\/span>\"update failed\"<\/span>);<\/span>\r\n                        }<\/span>\r\n                    }<\/span>\r\n                });<\/span>\r\n            }<\/span>\r\n        }<\/span>\r\n\r\n        List<\/span><<\/span>BatchResult<\/span>><\/span> batchResults<\/span> =<\/span> sqlSessionTemplate<\/span>.<\/span>flushStatements<\/span>();<\/span>\r\n        batchResults<\/span>.<\/span>stream<\/span>().<\/span>forEach<\/span>(<\/span>result<\/span> -><\/span> {<\/span>\r\n            for<\/span> (<\/span>int<\/span> updated<\/span> :<\/span> result<\/span>.<\/span>getUpdateCounts<\/span>())<\/span> {<\/span>\r\n                if<\/span> (<\/span>updated<\/span> <<\/span> 1<\/span>)<\/span> {<\/span>\r\n                    throw<\/span> new<\/span> RuntimeException<\/span>(<\/span>\"update failed\"<\/span>);<\/span>\r\n                }<\/span>\r\n            }<\/span>\r\n        });<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
      \u5c06data.json\u6587\u4ef6\u7684\u6a21\u5f0f\u8bbe\u7f6e\u4e3a\u6279\u5904\u7406\u3002<\/p>\n
      {<\/span>\r\n  \"mode\"<\/span>:<\/span> \"batch\"<\/span>,<\/span>\r\n<\/code><\/pre>\n
      \u56de\u5230\u6e90\u4ee3\u7801\u7684\u95ee\u9898\u4e0a\u6765\u3002<\/p>\n
      \u8981\u5728MyBatis\u4e2d\u4f7f\u7528\u6279\u91cf\u66f4\u65b0\uff0c\u9700\u8981\u5c06ExecutorType\u8bbe\u7f6e\u4e3aBATCH\u3002<\/p>\n
      Java\u7684API \/ SqlSessions \/ SqlSessionFactory<\/p>\n
      \u9ed8\u8ba4\u60c5\u51b5\u4e0b\u662fSIMPLE\uff0c\u4f46\u4e5f\u53ef\u4ee5\u901a\u8fc7mybatis-spring-boot-autoconfigure\u7684mybatis.executor-type\u5c5e\u6027\u8fdb\u884c\u66f4\u6539\uff0c\u4f46\u6574\u4f53\u4e0a\u4e0d\u592a\u53ef\u80fd\u4eceSIMPLE\u8fdb\u884c\u6539\u53d8\uff0c\u6211\u8ba4\u4e3a\u3002<\/p>\n
       <\/p>\n
      \u5728\u4f7f\u7528Mybatis-Spring\u6846\u67b6\u7684\u60c5\u51b5\u4e0b\uff0c\u8981\u66f4\u6539ExecutorType\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528SqlSessionTemplate\u6765\u5b9e\u73b0\u3002<\/p>\n
      mybatis-spring \/ \u4f7f\u7528 SqlSession \/ SqlSessionTemplate<\/p>\n
      \u5728\u4f7f\u7528Mapper\u672c\u8eab\u65f6\uff0c\u5e76\u6ca1\u6709\u66f4\u6539\u3002\u4f3c\u4e4e\u662f\u5c06\u901a\u8fc7Mapper\u6267\u884c\u7684\u8bed\u53e5\u79ef\u7d2f\u5230SqlSession\u4e2d\u3002<\/p>\n
      \u7136\u540e\uff0c\u8981\u6267\u884c\u901a\u8fc7MyBatis\u8fdb\u884c\u6279\u91cf\u66f4\u65b0\u5e76\u7d2f\u79ef\u7684\u8bed\u53e5\uff0c\u9700\u8981\u8c03\u7528SqlSession\uff03flushStatements\u3002<\/p>\n
      Java API\u63d0\u4f9b\u4e86SqlSessions\uff0cSqlSessionFactory\u4ee5\u53ca\u6279\u91cf\u66f4\u65b0\u8bed\u53e5\u7684Flush\u65b9\u6cd5\u3002<\/p>\n
                      List<\/span><<\/span>BatchResult<\/span>><\/span> batchResults<\/span> =<\/span> sqlSessionTemplate<\/span>.<\/span>flushStatements<\/span>();<\/span>\r\n<\/code><\/pre>\n
      \u8fd9\u4f3c\u4e4e\u4e0d\u662f\u4ee5\u8bed\u53e5\u6216\u6620\u5c04\u5668\u4f5c\u4e3a\u5355\u5143\u6765\u5904\u7406\u7684\u3002<\/p>\n
      \u8fd9\u662f\u4f7f\u7528MyBatis\u8fdb\u884c\u6279\u91cf\u66f4\u65b0\u7684\u65b9\u6cd5\u3002<\/p>\n
      \u6240\u4ee5\uff0c\u6211\u8003\u8651\u8ba9ProjectMapper\u4f7f\u7528ExecutorType#BATCH\uff0cTypeMapper\u4f7f\u7528\u9ed8\u8ba4\u7684ExecutorType#SIMPLE\u6765\u8fd0\u884c\u3002<\/p>\n
          public<\/span> BatchService<\/span>(<\/span>SqlSessionFactory<\/span> sqlSessionFactory<\/span>,<\/span> TypeMapper<\/span> typeMapper<\/span>)<\/span> {<\/span>\r\n        this<\/span>.<\/span>sqlSessionTemplate<\/span> =<\/span> new<\/span> SqlSessionTemplate<\/span>(<\/span>sqlSessionFactory<\/span>,<\/span> ExecutorType<\/span>.<\/span>BATCH<\/span>);<\/span>\r\n        this<\/span>.<\/span>projectMapper<\/span> =<\/span> sqlSessionTemplate<\/span>.<\/span>getMapper<\/span>(<\/span>ProjectMapper<\/span>.<\/span>class<\/span>);<\/span>\r\n\r\n        this<\/span>.<\/span>typeMapper<\/span> =<\/span> typeMapper<\/span>;<\/span>\r\n    }<\/span>\r\n<\/code><\/pre>\n
      \u5982\u679c\u5728\u8fd9\u4e2a\u72b6\u6001\u4e0b\u8fd0\u884c\uff0c\u5c06\u4f1a\u629b\u51fa\u4ee5\u4e0b\u4f8b\u5916\u3002<\/p>\n
      Caused by: org.springframework.dao.TransientDataAccessResourceException: Cannot change the ExecutorType when there is an existing transaction\r\n\tat org.mybatis.spring.SqlSessionUtils.sessionHolder(<\/span>SqlSessionUtils.java:168)<\/span> ~[mybatis-spring-3.0.0.jar:3.0.0]\r\n\tat org.mybatis.spring.SqlSessionUtils.getSqlSession(<\/span>SqlSessionUtils.java:104)<\/span> ~[mybatis-spring-3.0.0.jar:3.0.0]\r\n\tat org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor<\/span>.invoke(<\/span>SqlSessionTemplate.java:422)<\/span> ~[mybatis-spring-3.0.0.jar:3.0.0]\r\n\tat jdk.proxy2\/jdk.proxy2.$Proxy49<\/span>.insert(<\/span>Unknown Source)<\/span> ~[na:na]\r\n\tat org.mybatis.spring.SqlSessionTemplate.insert(<\/span>SqlSessionTemplate.java:272)<\/span> ~[mybatis-spring-3.0.0.jar:3.0.0]\r\n\tat org.apache.ibatis.binding.MapperMethod.execute(<\/span>MapperMethod.java:62)<\/span> ~[mybatis-3.5.11.jar:3.5.11]\r\n\tat org.apache.ibatis.binding.MapperProxy$PlainMethodInvoker<\/span>.invoke(<\/span>MapperProxy.java:145)<\/span> ~[mybatis-3.5.11.jar:3.5.11]\r\n\tat org.apache.ibatis.binding.MapperProxy.invoke(<\/span>MapperProxy.java:86)<\/span> ~[mybatis-3.5.11.jar:3.5.11]\r\n\tat jdk.proxy2\/jdk.proxy2.$Proxy51<\/span>.insert(<\/span>Unknown Source)<\/span> ~[na:na]\r\n\r\n\t\u301c\u7701\u7565\u301c\r\n<\/code><\/pre>\n
      \u770b\u8d77\u6765\uff0c\u5728\u4f7f\u7528MyBatis\u4e2d\uff0c\u4e0d\u5141\u8bb8\u5c06\u4e0d\u540c\u7684ExecutorType\u5305\u542b\u5728\u540c\u4e00\u4e2a\u4e8b\u52a1\u4e2d\u3002<\/p>\n
      \u8be5\u8868\u5355\u7684\u9644\u5e26\u6761\u4ef6\u662f\uff0c\u5728\u8c03\u7528\u6b64\u65b9\u6cd5\u65f6\uff0c\u4e0d\u5f97\u5b58\u5728\u4f7f\u7528\u4e0d\u540cExecutorType\u8fd0\u884c\u7684\u73b0\u6709\u4ea4\u6613\u3002\u8bf7\u786e\u4fdd\u4f7f\u7528\u4e0d\u540c\u6267\u884c\u5668\u7c7b\u578b\u7684SqlSessionTemplates\u8c03\u7528\u5728\u5355\u72ec\u7684\u4e8b\u52a1\u4e2d\u8fd0\u884c\uff08\u4f8b\u5982\uff0c\u4f7f\u7528PROPAGATION_REQUIRES_NEW\uff09\uff0c\u6216\u8005\u5b8c\u5168\u4e0d\u5728\u4e8b\u52a1\u4e4b\u5185\u3002<\/p><\/blockquote>\n
      MyBatis-Spring \/ \u4f7f\u7528 SqlSession \/ SqlSessionTemplate<\/p>\n
      \u662f\u5426\u8981\u5f00\u59cb\u4e00\u4e2a\u65b0\u7684\u4e8b\u52a1\uff08\u5c06\u4e8b\u52a1\u8fdb\u884c\u5206\u5f00\uff09\uff0c\u8bf7\u5728\u4e8b\u52a1\u5916\u6267\u884c……\u3002<\/p>\n
      \u90a3\u53ef\u771f\u662f\u633a\u4e25\u5389\u7684\u5462\u3002<\/p>\n
      \u6240\u4ee5\uff0c\u8fd9\u6b21\u6211\u5c06\u6240\u6709\u7684Mapper\u90fd\u8bbe\u7f6e\u4e3aExecutorType#BATCH\u3002<\/p>\n
          public<\/span> BatchService<\/span>(<\/span>SqlSessionFactory<\/span> sqlSessionFactory<\/span>)<\/span> {<\/span>\r\n        this<\/span>.<\/span>sqlSessionTemplate<\/span> =<\/span> new<\/span> SqlSessionTemplate<\/span>(<\/span>sqlSessionFactory<\/span>,<\/span> ExecutorType<\/span>.<\/span>BATCH<\/span>);<\/span>\r\n        this<\/span>.<\/span>projectMapper<\/span> =<\/span> sqlSessionTemplate<\/span>.<\/span>getMapper<\/span>(<\/span>ProjectMapper<\/span>.<\/span>class<\/span>);<\/span>\r\n\r\n        this<\/span>.<\/span>typeMapper<\/span> =<\/span> sqlSessionTemplate<\/span>.<\/span>getMapper<\/span>(<\/span>TypeMapper<\/span>.<\/span>class<\/span>);<\/span>\r\n    }<\/span>\r\n<\/code><\/pre>\n
      \u8fd9\u6837\u4e00\u6765\uff0c\u6267\u884c\u5c31\u80fd\u6210\u529f\u4e86\u3002<\/p>\n
      \u6211\u5bf9select\u8bed\u53e5\u7684\u6267\u884c\u60c5\u51b5\u6709\u4e9b\u7591\u8651\uff0c\u4f46\u770b\u8d77\u6765\u5b83\u987a\u5229\u8fd0\u884c\u4e86\u3002<\/p>\n
      \u8fd9\u6837\u5c31\u53ef\u4ee5\u4e86\u5417\uff1f\u6211\u4ee5\u4e3a\u53ef\u4ee5\uff0c\u4f46\u4e8b\u5b9e\u5e76\u975e\u5982\u6b64\u3002<\/p>\n
      \u5728ExecutorType.BATCH\u7684\u63cf\u8ff0\u4e2d\uff0c\u5199\u9053\u6267\u884c\u4ee5\u4e0b\u7684select\u8bed\u53e5\u65f6\u4f1a\u6267\u884c\u660e\u786e\u7684\u64cd\u4f5c\uff0c\u4f46\u770b\u8d77\u6765\u4f3c\u4e4e\u662f\u6267\u884cselect\u8bed\u53e5\u65f6\u4f1a\u5237\u65b0\u3002<\/p>\n
      \u5982\u679c\u5728\u5b83\u4eec\u4e4b\u95f4\u6267\u884cSELECT\u8bed\u53e5\uff0c\u6b64\u6267\u884c\u5668\u5c06\u6279\u91cf\u5904\u7406\u6240\u6709\u7684\u66f4\u65b0\u8bed\u53e5\uff0c\u5e76\u6839\u636e\u9700\u8981\u8fdb\u884c\u6807\u8bb0\uff0c\u4ee5\u786e\u4fdd\u6613\u4e8e\u7406\u89e3\u7684\u884c\u4e3a\u3002<\/p><\/blockquote>\n
      \u5b9e\u9645\u4e0a\uff0cBatchExecutor\u7684\u6e90\u4ee3\u7801\u4e2d\u4e5f\u5199\u7740\u5f53\u5c1d\u8bd5\u6267\u884cselect\u7c7b\u578b\u7684\u67e5\u8be2\u65f6\u9700\u8981\u8fdb\u884c\u5237\u65b0\u64cd\u4f5c\u3002<\/p>\n
       <\/p>\n
      \u56e0\u6b64\uff0c\u5728\u8fd9\u6b21\u521b\u5efa\u7684\u6e90\u4ee3\u7801\u4e2d\uff0c\u7531\u4e8e\u4e2d\u95f4\u63d2\u5165\u4e86select\u8bed\u53e5\uff0c\u6240\u4ee5\u51e0\u4e4e\u6bcf\u6b21\u90fd\u4f1a\u5237\u65b0\uff08\u4e5f\u4f1a\u53d1\u9001insert\u8bed\u53e5\uff09\u3002<\/p>\n
                  if<\/span> (<\/span>typeMapper<\/span>.<\/span>selectById<\/span>(<\/span>type<\/span>.<\/span>getId<\/span>())<\/span> ==<\/span> null<\/span>)<\/span> {<\/span>\r\n                typeMapper<\/span>.<\/span>insert<\/span>(<\/span>type<\/span>);<\/span>\r\n            }<\/span>\r\n\r\n            projectMapper<\/span>.<\/span>insert<\/span>(<\/span>project<\/span>);<\/span>\r\n\r\n            if<\/span> (<\/span>counter<\/span> %<\/span> rowThreshold<\/span> ==<\/span> 0<\/span>)<\/span> {<\/span>\r\n                List<\/span><<\/span>BatchResult<\/span>><\/span> batchResults<\/span> =<\/span> sqlSessionTemplate<\/span>.<\/span>flushStatements<\/span>();<\/span>\r\n                batchResults<\/span>.<\/span>stream<\/span>().<\/span>forEach<\/span>(<\/span>result<\/span> -><\/span> {<\/span>\r\n                    for<\/span> (<\/span>int<\/span> updated<\/span> :<\/span> result<\/span>.<\/span>getUpdateCounts<\/span>())<\/span> {<\/span>\r\n                        if<\/span> (<\/span>updated<\/span> <<\/span> 1<\/span>)<\/span> {<\/span>\r\n                            throw<\/span> new<\/span> RuntimeException<\/span>(<\/span>\"update failed\"<\/span>);<\/span>\r\n                        }<\/span>\r\n                    }<\/span>\r\n                });<\/span>\r\n            }<\/span>\r\n<\/code><\/pre>\n
      \u5b9e\u9645\u4e0a\uff0c\u6bcf\u6b21\u5faa\u73af\u90fd\u4f1a\u5c06\u8bed\u53e5\u8bb0\u5f55\u5728PostgreSQL\u4e2d\u3002<\/p>\n
      \u6279\u91cf\u66f4\u65b0\u4e0d\u662f\u4ee5\u8bed\u53e5\u6216Mapper\u4f5c\u4e3a\u5355\u4f4d\u7684\uff0c\u6240\u4ee5\u53ea\u8981\u5728\u4efb\u610f\u65e0\u5173\u7684Mapper\u4e2d\u6267\u884c\u4e86select\u8bed\u53e5\uff0c\u5c31\u4f1a\u8fdb\u884c\u5237\u65b0\u64cd\u4f5c\u3002<\/p>\n
      \u5982\u679c\u4e0d\u8fd9\u6837\u505a\uff0c\u5c31\u6ca1\u6709\u610f\u4e49\uff0c\u56e0\u6b64\u5fc5\u987b\u72ec\u7acb\u6267\u884c\u66f4\u65b0\u67e5\u8be2\uff0c\u5426\u5219\u65e0\u6cd5\u6709\u6548\u5730\u4f7f\u7528MyBatis\u7684\u6279\u91cf\u66f4\u65b0\u3002<\/p>\n
      \u5982\u679c\u4f60\u4e0d\u77e5\u9053\u7684\u8bdd\uff0c\u53ef\u80fd\u5728\u4f60\u6ca1\u6709\u610f\u8bc6\u5230\u7684\u65f6\u5019\u4f1a\u53d1\u751f\u95ea\u7535\u822c\u7684\u4e8b\u60c5\uff0c\u6240\u4ee5\u8981\u5c0f\u5fc3\u6ce8\u610f\u4e00\u4e0b…<\/p>\n
      \u603b\u7ed3<\/h1>\n
      \u6211\u4f7f\u7528MyBatis\uff0bSpring Boot\u5c1d\u8bd5\u4e86\u591a\u884c\u63d2\u5165\u548c\u6279\u91cf\u66f4\u65b0\u3002<\/p>\n
      \u6211\u8ba4\u4e3a\u6279\u91cf\u66f4\u65b0\uff08ExecutorType#BATCH\uff09\u6709\u4e00\u4e9b\u7279\u70b9\uff0c\u56e0\u6b64\uff0c\u5728MyBatis\u4e2d\uff0c\u5982\u679c\u60f3\u8981\u9ad8\u6548\u5730\u6267\u884c\u63d2\u5165\u8bed\u53e5\uff0c\u53ef\u80fd\u4f7f\u7528\u591a\u884c\u63d2\u5165\u66f4\u597d\u3002
      \n\u867d\u7136\u8fd9\u6837\u4e00\u6765\uff0c\u65e0\u6cd5\u5904\u7406\u66f4\u65b0\u8bed\u53e5\u7684\u95ee\u9898…<\/p>\n
      \u4e0d\u7ba1\u600e\u6837\uff0c\u6211\u89c9\u5f97\u786e\u8ba4\u4e00\u4e0b\u8fd8\u662f\u633a\u597d\u7684\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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