{"id":40208,"date":"2023-05-20T08:31:37","date_gmt":"2023-04-26T07:15:33","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8springboot%e5%92%8cspring-jpa%e6%9d%a5%e6%9f%a5%e8%af%a2%e5%85%b7%e6%9c%89%e5%a4%9a%e4%b8%aa%e5%88%97%e4%b8%bb%e9%94%ae%e7%9a%84%e8%a1%a8%e3%80%82\/"},"modified":"2024-04-30T05:02:33","modified_gmt":"2024-04-29T21:02:33","slug":"%e4%bd%bf%e7%94%a8springboot%e5%92%8cspring-jpa%e6%9d%a5%e6%9f%a5%e8%af%a2%e5%85%b7%e6%9c%89%e5%a4%9a%e4%b8%aa%e5%88%97%e4%b8%bb%e9%94%ae%e7%9a%84%e8%a1%a8%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8springboot%e5%92%8cspring-jpa%e6%9d%a5%e6%9f%a5%e8%af%a2%e5%85%b7%e6%9c%89%e5%a4%9a%e4%b8%aa%e5%88%97%e4%b8%bb%e9%94%ae%e7%9a%84%e8%a1%a8%e3%80%82\/","title":{"rendered":"\u4f7f\u7528SpringBoot\u548cSpring JPA\u6765\u67e5\u8be2\u5177\u6709\u591a\u4e2a\u5217\u4e3b\u952e\u7684\u8868"},"content":{"rendered":"

\u6211\u4eec\u5c06\u5c1d\u8bd5\u5728Spring-JPA\u4e2d\u5bf9\u5177\u6709\u591a\u4e2a\u5217\u4f5c\u4e3a\u4e3b\u952e\u7684\u8868\u8fdb\u884c\u641c\u7d22\u5904\u7406\u3002<\/h2>\n

1. \u5f62\u6210<\/p>\n

sample-compositepk\r\n\u2502  build.gradle\r\n\u2514\u2500src\r\n    \u251c\u2500main\r\n        \u251c\u2500java\r\n        \u2502  \u2514\u2500com\r\n        \u2502      \u2514\u2500stone\r\n        \u2502          \u2514\u2500sample\r\n        \u2502                  SampleCompositePkApplication.java\r\n        \u2502                  SampleController.java\r\n        \u2502                  ServletInitializer.java\r\n        \u2502                  TCalendar.java\r\n        \u2502                  TCalendarPK.java\r\n        \u2502                  TCalendarRepository.java\r\n        \u2514\u2500resources\r\n            \u2502  application.properties\r\n            \u2502  hibernate.properties\r\n            \u2502  \r\n            \u251c\u2500static\r\n            \u2514\u2500templates\r\n                    index.html\r\n<\/code><\/pre>\n
2. \u4f9d\u8d56\u5173\u7cfb<\/p>\n
dependencies<\/span> {<\/span>\r\n    compile<\/span>(<\/span>'org.springframework.boot:spring-boot-starter-data-jpa'<\/span>)<\/span>\r\n    compile<\/span>(<\/span>'org.springframework.boot:spring-boot-starter-thymeleaf'<\/span>)<\/span>\r\n    compile<\/span>(<\/span>'org.springframework.boot:spring-boot-starter-web'<\/span>)<\/span>\r\n    runtime<\/span>(<\/span>'org.springframework.boot:spring-boot-devtools'<\/span>)<\/span>\r\n    runtime<\/span>(<\/span>'org.postgresql:postgresql'<\/span>)<\/span>\r\n    compileOnly<\/span>(<\/span>'org.projectlombok:lombok'<\/span>)<\/span>\r\n    providedRuntime<\/span>(<\/span>'org.springframework.boot:spring-boot-starter-tomcat'<\/span>)<\/span>\r\n    testCompile<\/span>(<\/span>'org.springframework.boot:spring-boot-starter-test'<\/span>)<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
3. \u6570\u636e\u5e93\u8fde\u63a5\u914d\u7f6e<\/p>\n
spring.datasource.driverClassName<\/span>=<\/span>org.postgresql.Driver<\/span>\r\nspring.datasource.url<\/span>=<\/span>jdbc:postgresql:\/\/localhost:5432\/testdb<\/span>\r\nspring.datasource.username<\/span>=<\/span>testuser<\/span>\r\nspring.datasource.password<\/span>=<\/span>testuser<\/span>\r\nspring.jpa.hibernate.ddl-auto<\/span>=<\/span>none<\/span>\r\n<\/code><\/pre>\n
hibernate.jdbc.lob.non_contextual_creation<\/span> =<\/span> true<\/span>\r\n<\/code><\/pre>\n
\u672c\u6b21\u6837\u672c\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528PostgreSQL\u4f5c\u4e3a\u6570\u636e\u5e93\u3002<\/p>\n
\u4e09\u7ef4\u6570\u636e\u5e93<\/p>\n
create<\/span> table<\/span> tcalendar<\/span>(<\/span>\r\n yyyymm<\/span> int<\/span> not<\/span> null<\/span>\r\n,<\/span>dd<\/span> int<\/span> not<\/span> null<\/span>\r\n,<\/span>plans<\/span> character<\/span> varying<\/span>(<\/span>128<\/span>)<\/span>\r\n,<\/span>primary<\/span> key<\/span>(<\/span>yyyymm<\/span>,<\/span>dd<\/span>)<\/span>\r\n)<\/span>\r\n<\/code><\/pre>\n
\u4f5c\u4e3a\u793a\u4f8b\uff0c\u6211\u5c06\u521b\u5efa\u4e00\u4e2a\u65e5\u7a0b\u8868\u3002
\n\u4e3b\u952e\u4f7f\u7528\u5e74\u4efd\u548c\u65e5\u671f\u6307\u5b9a\u3002<\/p>\n
insert<\/span> into<\/span> public<\/span>.<\/span>tcalendar<\/span> values<\/span>\r\n(<\/span>201804<\/span>,<\/span>1<\/span>,<\/span>'1\u65e5\u76ee\u306e\u4e88\u5b9a'<\/span>)<\/span>\r\n,(<\/span>201804<\/span>,<\/span>2<\/span>,<\/span>'2\u65e5\u76ee\u306e\u4e88\u5b9a'<\/span>)<\/span>\r\n,(<\/span>201804<\/span>,<\/span>3<\/span>,<\/span>'3\u65e5\u76ee\u306e\u4e88\u5b9a'<\/span>)<\/span>\r\n,(<\/span>201804<\/span>,<\/span>4<\/span>,<\/span>'4\u65e5\u76ee\u306e\u4e88\u5b9a'<\/span>)<\/span>\r\n,(<\/span>201804<\/span>,<\/span>5<\/span>,<\/span>'5\u65e5\u76ee\u306e\u4e88\u5b9a'<\/span>)<\/span>\r\n,(<\/span>201804<\/span>,<\/span>6<\/span>,<\/span>'6\u65e5\u76ee\u306e\u4e88\u5b9a'<\/span>)<\/span>\r\n,(<\/span>201804<\/span>,<\/span>7<\/span>,<\/span>'7\u65e5\u76ee\u306e\u4e88\u5b9a'<\/span>)<\/span>\r\n,(<\/span>201804<\/span>,<\/span>8<\/span>,<\/span>'8\u65e5\u76ee\u306e\u4e88\u5b9a'<\/span>)<\/span>\r\n,(<\/span>201804<\/span>,<\/span>9<\/span>,<\/span>'9\u65e5\u76ee\u306e\u4e88\u5b9a'<\/span>)<\/span>\r\n,(<\/span>201804<\/span>,<\/span>10<\/span>,<\/span>'10\u65e5\u76ee\u306e\u4e88\u5b9a'<\/span>)<\/span>\r\n,(<\/span>201804<\/span>,<\/span>11<\/span>,<\/span>'11\u65e5\u76ee\u306e\u4e88\u5b9a'<\/span>)<\/span>\r\n,(<\/span>201804<\/span>,<\/span>12<\/span>,<\/span>'12\u65e5\u76ee\u306e\u4e88\u5b9a'<\/span>)<\/span>\r\n,(<\/span>201804<\/span>,<\/span>13<\/span>,<\/span>'13\u65e5\u76ee\u306e\u4e88\u5b9a'<\/span>)<\/span>\r\n,(<\/span>201804<\/span>,<\/span>14<\/span>,<\/span>'14\u65e5\u76ee\u306e\u4e88\u5b9a'<\/span>)<\/span>\r\n,(<\/span>201804<\/span>,<\/span>15<\/span>,<\/span>'15\u65e5\u76ee\u306e\u4e88\u5b9a'<\/span>)<\/span>\r\n<\/code><\/pre>\n
\u65e2\u7136\u51c6\u5907\u5de5\u4f5c\u5df2\u7ecf\u5b8c\u6210\uff0c\u63a5\u4e0b\u6765\u6211\u4eec\u8981\u5f00\u59cb\u521b\u5efa\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n
4. \u5b9e\u4f53<\/p>\n
package<\/span> com.stone.sample<\/span>;<\/span>\r\nimport<\/span> javax.persistence.Column<\/span>;<\/span>\r\nimport<\/span> javax.persistence.Entity<\/span>;<\/span>\r\nimport<\/span> javax.persistence.Id<\/span>;<\/span>\r\nimport<\/span> javax.persistence.IdClass<\/span>;<\/span>\r\nimport<\/span> javax.persistence.Table<\/span>;<\/span>\r\n@Entity<\/span>\r\n@Table<\/span>(<\/span>name<\/span>=<\/span>\"tcalendar\"<\/span>)<\/span>\r\n@IdClass<\/span>(<\/span>TCalendarPK<\/span>.<\/span>class<\/span>)<\/span>\r\npublic<\/span> class<\/span> TCalendar<\/span> {<\/span>\r\n    \/**  *\/<\/span>\r\n    @Id<\/span>\r\n    @Column<\/span> (<\/span>name<\/span>=<\/span>\"yyyymm\"<\/span>)<\/span>\r\n    private<\/span> int<\/span> yyyymm<\/span>;<\/span>\r\n    \/**  *\/<\/span>\r\n    @Id<\/span>\r\n    @Column<\/span> (<\/span>name<\/span>=<\/span>\"dd\"<\/span>)<\/span>\r\n    private<\/span> int<\/span> dd<\/span>;<\/span>\r\n\r\n    \/**  *\/<\/span>\r\n    @Column<\/span> (<\/span>name<\/span>=<\/span>\"plans\"<\/span>)<\/span>\r\n    private<\/span> String<\/span> plans<\/span>;<\/span>\r\n\/\/ setter,getter<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5728@IdClass\u4e2d\u6307\u5b9a\u4e86\u5b9a\u4e49\u4e86\u4e3b\u952e\u7684\u7c7b\u3002<\/p>\n
5. \u7ec4\u5408\u4e3b\u952e\u7c7b<\/p>\n
package<\/span> com.stone.sample<\/span>;<\/span>\r\n\r\nimport<\/span> java.io.Serializable<\/span>;<\/span>\r\n\r\nimport<\/span> javax.persistence.Column<\/span>;<\/span>\r\nimport<\/span> javax.persistence.Embeddable<\/span>;<\/span>\r\n\r\n@Embeddable<\/span>\r\npublic<\/span> class<\/span> TCalendarPK<\/span> implements<\/span> Serializable<\/span> {<\/span>\r\n    @Column<\/span> (<\/span>name<\/span>=<\/span>\"yyyymm\"<\/span>)<\/span>\r\n    private<\/span> int<\/span> yyyymm<\/span>;<\/span>\r\n    @Column<\/span> (<\/span>name<\/span>=<\/span>\"dd\"<\/span>)<\/span>\r\n    private<\/span> int<\/span> dd<\/span>;<\/span>\r\n\/\/\u4ee5\u4e0b\u3001\u7701\u7565<\/span>\r\n\/\/setter, getter<\/span>\r\n\/\/hashcode,equals\u30e1\u30bd\u30c3\u30c9<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5728\u4f7f\u7528Eclipse\u65f6\uff0c\u60a8\u53ef\u4ee5\u53f3\u952e\u5355\u51fb\u5e76\u9009\u62e9\u6e90\u4ee3\u7801\uff0c\u7136\u540e\u81ea\u52a8\u521b\u5efasetter\u3001getter\u3001hashcode\u548cequals\u65b9\u6cd5\u3002<\/p>\n
\u4ed3\u5e93\u3002<\/p>\n
package<\/span> com.stone.sample<\/span>;<\/span>\r\n\r\nimport<\/span> org.springframework.data.jpa.repository.JpaRepository<\/span>;<\/span>\r\nimport<\/span> org.springframework.data.jpa.repository.Query<\/span>;<\/span>\r\nimport<\/span> org.springframework.data.repository.query.Param<\/span>;<\/span>\r\n\r\npublic<\/span> interface<\/span> TCalendarRepository<\/span> extends<\/span> JpaRepository<\/span><<\/span>TCalendar<\/span>,<\/span> TCalendarPK<\/span>>{<\/span>\r\n    @Query<\/span>(<\/span>\"select o from TCalendar o where o.yyyymm = :yyyymm and o.dd = :dd\"<\/span>)<\/span>\r\n    TCalendar<\/span> findByCompositePrimaryKey<\/span>(<\/span>@Param<\/span>(<\/span>\"yyyymm\"<\/span>)<\/span>int<\/span> yyyymm<\/span>,<\/span>@Param<\/span>(<\/span>\"dd\"<\/span>)<\/span>int<\/span> dd<\/span>);<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
7. \u63a7\u5236\u5668<\/p>\n
package<\/span> com.stone.sample<\/span>;<\/span>\r\n\r\nimport<\/span> org.springframework.beans.factory.annotation.Autowired<\/span>;<\/span>\r\nimport<\/span> org.springframework.stereotype.Controller<\/span>;<\/span>\r\nimport<\/span> org.springframework.ui.Model<\/span>;<\/span>\r\nimport<\/span> org.springframework.web.bind.annotation.RequestMapping<\/span>;<\/span>\r\nimport<\/span> org.springframework.web.bind.annotation.RequestMethod<\/span>;<\/span>\r\n\r\n@Controller<\/span>\r\npublic<\/span> class<\/span> SampleController<\/span> {<\/span>\r\n\r\n    @Autowired<\/span>\r\n    TCalendarRepository<\/span> repository<\/span>;<\/span>\r\n\r\n    @RequestMapping<\/span>(<\/span>value<\/span> =<\/span> \"\/\"<\/span>,<\/span> method<\/span> =<\/span> RequestMethod<\/span>.<\/span>GET<\/span>)<\/span>\r\n    public<\/span> String<\/span> index<\/span>(<\/span>Model<\/span> model<\/span>)<\/span> {<\/span>\r\n        TCalendar<\/span> entity<\/span> =<\/span> repository<\/span>.<\/span>findByCompositePrimaryKey<\/span>(<\/span>201804<\/span>,<\/span> 5<\/span>);<\/span>\r\n        model<\/span>.<\/span>addAttribute<\/span>(<\/span>\"entity\"<\/span>,<\/span> entity<\/span>);<\/span>\r\n        return<\/span> \"index\"<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u7528\u4e2d\u6587\u539f\u751f\u65b9\u5f0f\u89e3\u91ca\u4ee5\u4e0b\u5185\u5bb9\uff0c\u53ea\u9700\u8981\u4e00\u79cd\u9009\u62e9\uff1a
\n8. HTML<\/p>\n
\u7b54\u6848\uff1a HTML \u662f\u4e00\u79cd\u6807\u8bb0\u8bed\u8a00\u3002<\/p>\n
<!DOCTYPE html><\/span>\r\n<html<\/span> xmlns=<\/span>\"http:\/\/www.w3.org\/1999\/xhtml\"<\/span> xmlns:th=<\/span>\"http:\/\/www.thymeleaf.org\"<\/span>><\/span>\r\n    <head><\/span>\r\n        <title><\/span>Hello<\/title><\/span>\r\n        <meta<\/span> charset=<\/span>\"utf-8\"<\/span> \/><\/span>\r\n        <style><\/span>\r\n        table<\/span> {<\/span>border<\/span>:<\/span> solid<\/span> 1px<\/span> #000000<\/span>;<\/span> border-collapse<\/span>:<\/span> collapse<\/span>;}<\/span>\r\n        <\/style><\/span>\r\n    <\/head><\/span>\r\n    <body><\/span>\r\n        <h1><\/span>Springboot JPA Sample(Composite primary key)<\/h1><\/span>\r\n        <table<\/span> border=<\/span>\"1\"<\/span>><\/span>\r\n            <thead><\/span>\r\n                <tr><\/span>\r\n                    <td><\/span>\u5e74\u6708<\/td><\/span>\r\n                    <td><\/span>\u65e5<\/td><\/span>\r\n                    <td><\/span>\u4e88\u5b9a<\/td><\/span>\r\n                <\/tr><\/span>\r\n            <\/thead><\/span>\r\n            <tbody><\/span>\r\n                <tr<\/span> ><\/span>\r\n                    <td<\/span> th:text=<\/span>\"${entity.yyyymm}\"<\/span>><\/td><\/span>\r\n                    <td<\/span> th:text=<\/span>\"*{entity.dd}\"<\/span>><\/td><\/span>\r\n                    <td<\/span> th:text=<\/span>\"*{entity.plans}\"<\/span>><\/td><\/span>\r\n                <\/tr><\/span>\r\n            <\/tbody><\/span>\r\n        <\/table><\/span>\r\n    <\/body><\/span>\r\n<\/html><\/span>\r\n<\/code><\/pre>\n
\u5b9e\u73b0\u5b8c\u6210<\/p>\n
9. \u6211\u4f1a\u6267\u884c\u5e76\u786e\u8ba4\u4e00\u4e0b\u3002
\n\u5bf9\u9879\u76ee\u8fdb\u884c\u53f3\u952e\u70b9\u51fb\u2192\u9009\u62e9”\u8fd0\u884c”\u2192\u9009\u62e9”Spring Boot \u5e94\u7528\u7a0b\u5e8f”\u3002
\n\u8bbf\u95eehttp:\/\/localhost:8080\/\uff0c
\n\u4f1a\u663e\u793a\u4ee5\u4e0b\u7684\u754c\u9762\u3002<\/p>\n
\"image.png\"<\/div>\n
\u4ee5\u4e0a\u5185\u5bb9\u5982\u4e0b\u3002 .)<\/p>\n","protected":false},"excerpt":{"rendered":"
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