{"id":40218,"date":"2022-12-12T10:19:51","date_gmt":"2023-10-05T04:00:52","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8springboot-spring-jpa%e6%9d%a5%e4%bd%bf%e7%94%a8%e5%8e%9f%e7%94%9f%e6%9f%a5%e8%af%a2\/"},"modified":"2024-04-29T04:55:16","modified_gmt":"2024-04-28T20:55:16","slug":"%e4%bd%bf%e7%94%a8springboot-spring-jpa%e6%9d%a5%e4%bd%bf%e7%94%a8%e5%8e%9f%e7%94%9f%e6%9f%a5%e8%af%a2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8springboot-spring-jpa%e6%9d%a5%e4%bd%bf%e7%94%a8%e5%8e%9f%e7%94%9f%e6%9f%a5%e8%af%a2\/","title":{"rendered":"\u4f7f\u7528SpringBoot + Spring JPA\u6765\u4f7f\u7528\u539f\u751f\u67e5\u8be2"},"content":{"rendered":"

\u6211\u5c06\u5728SpringBoot\u4e2d\u5c1d\u8bd5\u8fdb\u884c\u67e5\u8be2\u641c\u7d22\u3002<\/h2>\n

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

sample-jpa02\r\n\u2502  build.gradle\r\n\u2514\u2500src\r\n    \u2514\u2500main\r\n        \u251c\u2500java\r\n        \u2502  \u2514\u2500com\r\n        \u2502      \u2514\u2500sample\r\n        \u2502            HeloController.java\r\n        \u2502            QEmployee.java\r\n        \u2502            QEmployeeRepository.java\r\n        \u2502            SamplePrj005Jpa02Application.java\r\n        \u2502            ServletInitializer.java\r\n        \u2514\u2500resources\r\n            \u2502  application.properties\r\n            \u251c\u2500static\r\n            \u2514\u2500templates\r\n                  index.html\r\n<\/code><\/pre>\n
\u4f9d\u5b58\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>'mysql:mysql-connector-java'<\/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. \u8bbe\u7f6e\u6570\u636e\u5e93\u8fde\u63a5\u4fe1\u606f<\/p>\n
spring.datasource.url=jdbc:mysql:\/\/localhost:3306\/sampledb\r\nspring.datasource.username=testuser\r\nspring.datasource.password=testuser\r\nspring.datasource.driverClassName=com.mysql.jdbc.Driver\r\nspring.jpa.database=MYSQL\r\nspring.jpa.hibernate.ddl-auto=update\r\n<\/code><\/pre>\n
4. \u6570\u636e\u5e93\u8868\u683c
\n\u521b\u5efa\u8868\u683c m_emp (
\nempno bigint(20) NOT NULL AUTO_INCREMENT,
\nempname varchar(255) DEFAULT NULL,
\ndepartmentid varchar(10) DEFAULT NULL,
\nPRIMARY KEY (empno)
\n) \u4f7f\u7528 InnoDB \u5f15\u64ce\uff0c\u81ea\u52a8\u9012\u589e\u8d77\u59cb\u503c\u4e3a 5\uff0c\u5b57\u7b26\u96c6\u4e3a utf8\u3002<\/p>\n
\u5c06\u4ee5\u4e0b\u5185\u5bb9\u63d2\u5165\u5230sampledb.m_emp\u8868\u4e2d\uff1a
\n(empname, departmentid)
\nvalues
\n(‘\u5f93\u696d\u54e1A’, ‘10101001’)
\n,(‘\u5f93\u696d\u54e1B’, ‘10101001’)
\n,(‘\u5f93\u696d\u54e1C’, ‘10101002’)
\n,(‘\u5f93\u696d\u54e1D’, ‘10101003’)<\/p>\n
\u521b\u5efa\u8868m_department(
\ndepartmentid varchar(10) NOT NULL,
\ndepartmentname varchar(128) DEFAULT NULL,
\nPRIMARY KEY (departmentid)
\n) ENGINE=InnoDB DEFAULT CHARSET=utf8<\/p>\n
\u63d2\u5165\u5230sampledb.m_department\u8868\u4e2d\uff08departmentid\uff0cdepartmentname\uff09\u7684\u503c\u4e3a
\n(‘10101001′,’\u6240\u5c5eP’)
\n,(‘10101002′,’\u6240\u5c5eQ’)
\n,(‘10101003′,’\u6240\u5c5eR’)<\/p>\n
5. \u5b9e\u4f53<\/p>\n
import<\/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> lombok.AllArgsConstructor<\/span>;<\/span>\r\nimport<\/span> lombok.NoArgsConstructor<\/span>;<\/span>\r\n@AllArgsConstructor<\/span>\r\n@NoArgsConstructor<\/span>\r\n@Entity<\/span>\r\npublic<\/span> class<\/span> QEmployee<\/span> {<\/span>\r\n    @Id<\/span>\r\n    @Column<\/span>(<\/span>name<\/span>=<\/span>\"empno\"<\/span>)<\/span>\r\n    private<\/span> long<\/span> id<\/span>;<\/span>\r\n    private<\/span> String<\/span> empname<\/span>;<\/span>\r\n    private<\/span> String<\/span> departmentid<\/span>;<\/span>\r\n    private<\/span> String<\/span> departmentname<\/span>;<\/span>\r\n\/\/ setter getter<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
6. \u5b58\u50a8\u5e93<\/p>\n
import<\/span> java.util.List<\/span>;<\/span>\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\nimport<\/span> org.springframework.stereotype.Repository<\/span>;<\/span>\r\n@Repository<\/span>\r\npublic<\/span> interface<\/span> QEmployeeRepository<\/span> extends<\/span> JpaRepository<\/span><<\/span>QEmployee<\/span>,<\/span> Long<\/span>><\/span>  {<\/span>\r\n    public<\/span> static<\/span> final<\/span> String<\/span> _querybase<\/span>\r\n     =<\/span> \"SELECT\"<\/span>\r\n     +<\/span> \"  emp.empno\"<\/span>\r\n     +<\/span> \" ,emp.empname\"<\/span>\r\n     +<\/span> \" ,emp.departmentid\"<\/span>\r\n     +<\/span> \" ,dep.departmentname\"<\/span>\r\n     +<\/span> \"  FROM\"<\/span>\r\n     +<\/span> \"  sampledb.m_emp emp\"<\/span>\r\n     +<\/span> \"  LEFT JOIN\"<\/span>\r\n     +<\/span> \"  sampledb.m_department dep\"<\/span>\r\n     +<\/span> \"  ON emp.departmentid = dep.departmentid\"<\/span>\r\n     ;<\/span>\r\n    public<\/span> static<\/span> final<\/span> String<\/span> _query<\/span> =<\/span> _querybase<\/span>\r\n             +<\/span> \"  ORDER BY\"<\/span>\r\n             +<\/span> \"  emp.departmentid,emp.empno\"<\/span>;<\/span>\r\n    public<\/span> static<\/span> final<\/span> String<\/span> _query2<\/span> =<\/span> _querybase<\/span>\r\n             +<\/span> \"  WHERE\"<\/span>\r\n             +<\/span> \"  emp.departmentid = :departmentid\"<\/span>\r\n             +<\/span> \"  ORDER BY\"<\/span>\r\n             +<\/span> \"  emp.departmentid,emp.empno\"<\/span>;<\/span>\r\n    @Query<\/span>(<\/span>value<\/span> =<\/span> _query<\/span>,<\/span> nativeQuery<\/span> =<\/span> true<\/span>)<\/span>\r\n    List<\/span><<\/span>QEmployee<\/span>><\/span> findAll<\/span>();<\/span>\r\n    @Query<\/span>(<\/span>value<\/span> =<\/span> _query2<\/span>,<\/span> nativeQuery<\/span> =<\/span> true<\/span>)<\/span>\r\n    List<\/span><<\/span>QEmployee<\/span>><\/span> findByDepartmentId<\/span>(<\/span>@Param<\/span>(<\/span>\"departmentid\"<\/span>)<\/span> String<\/span> departmentid<\/span>);<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
7. \u63a7\u5236\u5668<\/p>\n
import<\/span> java.util.List<\/span>;<\/span>\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\nimport<\/span> org.springframework.web.bind.annotation.RequestParam<\/span>;<\/span>\r\n\r\n@Controller<\/span>\r\npublic<\/span> class<\/span> HeloController<\/span> {<\/span>\r\n    @Autowired<\/span>\r\n    QEmployeeRepository<\/span> empRepository<\/span>;<\/span>\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        \/\/\u753b\u9762\u306b\u8868\u793a\u3059\u308b\u5f93\u696d\u54e1\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002<\/span>\r\n        List<\/span><<\/span>QEmployee<\/span>><\/span> emplist<\/span>=<\/span>empRepository<\/span>.<\/span>findAll<\/span>();<\/span>\r\n        model<\/span>.<\/span>addAttribute<\/span>(<\/span>\"emplist\"<\/span>,<\/span> emplist<\/span>);<\/span>\r\n        return<\/span> \"index\"<\/span>;<\/span>\r\n    }<\/span>\r\n    @RequestMapping<\/span>(<\/span>value<\/span> =<\/span> \"\/department\"<\/span>,<\/span> method<\/span> =<\/span> RequestMethod<\/span>.<\/span>GET<\/span>)<\/span>\r\n    public<\/span> String<\/span> departmentsearch<\/span>(<\/span>@RequestParam<\/span>(<\/span>\"departmentid\"<\/span>)<\/span> String<\/span> departmentid<\/span>,<\/span> Model<\/span> model<\/span>)<\/span> {<\/span>\r\n        \/\/\u753b\u9762\u306b\u8868\u793a\u3059\u308b\u5f93\u696d\u54e1\u30c7\u30fc\u30bf\uff08\u6240\u5c5e='10101001'\uff09\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002<\/span>\r\n        List<\/span><<\/span>QEmployee<\/span>><\/span> emplist<\/span>=<\/span>empRepository<\/span>.<\/span>findByDepartmentId<\/span>(<\/span>departmentid<\/span>);<\/span>\r\n        model<\/span>.<\/span>addAttribute<\/span>(<\/span>\"emplist\"<\/span>,<\/span> emplist<\/span>);<\/span>\r\n        return<\/span> \"index\"<\/span>;<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u8bf7\u5c06\u4ee5\u4e0b\u5185\u5bb9\u7528\u4e2d\u6587\u8fdb\u884c\u672c\u5730\u5316\u6539\u5199\uff0c\u53ea\u9700\u8981\u63d0\u4f9b\u4e00\u4e2a\u9009\u9879:
\n8\u53f7.html<\/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>Springboot<\/title><\/span>\r\n        <meta<\/span> charset=<\/span>\"utf-8\"<\/span> \/><\/span>\r\n    <\/head><\/span>\r\n    <body><\/span>\r\n        <h1<\/span> th:text=<\/span>\"${title}\"<\/span>><\/h1><\/span>\r\n        <form<\/span> th:action=<\/span>\"@{\/department}\"<\/span> th:method=<\/span>\"get\"<\/span>><\/span>\r\n            <label><\/span>\u6240\u5c5e\u30b3\u30fc\u30c9\uff1a<\/label><\/span>\r\n            <input<\/span> type=<\/span>\"text\"<\/span> th:name=<\/span>\"departmentid\"<\/span>\/><\/span>\r\n            <button<\/span> type=<\/span>\"submit\"<\/span>><\/span>\u691c\u7d22<\/button><\/span>\r\n        <\/form><\/span>\r\n        <table><\/span>\r\n            <tr<\/span> th:each=<\/span>\"emp : ${emplist}\"<\/span> th:object=<\/span>\"${emp}\"<\/span>><\/span>\r\n                <td<\/span> th:text=<\/span>\"*{id}\"<\/span>><\/td><\/span>\r\n                <td<\/span> th:text=<\/span>\"*{empname}\"<\/span>><\/td><\/span>\r\n                <td<\/span> th:text=<\/span>\"*{departmentid}\"<\/span>><\/td><\/span>\r\n                <td<\/span> th:text=<\/span>\"*{departmentname}\"<\/span>><\/td><\/span>\r\n            <\/tr><\/span>\r\n        <\/table><\/span>\r\n    <\/body><\/span>\r\n<\/html><\/span>\r\n<\/code><\/pre>\n
9. \u6267\u884cSpringboot\u5e76\u8bbf\u95eeURL\u3002<\/p>\n
\"image.png\"<\/div>\n
\u6211\u4f1a\u8bd5\u7740\u901a\u8fc7\u6307\u5b9a\u6240\u5c5e\u4ee3\u7801\u8fdb\u884c\u641c\u7d22\u3002<\/p>\n
\"image.png\"<\/div>\n
\u5982\u679c\u4f7f\u7528SpringBoot\uff0c\u60a8\u53ef\u4ee5\u8f7b\u677e\u5730\u5b9e\u73b0\u6570\u636e\u5e93\u641c\u7d22\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6211\u5c06\u5728SpringBoot\u4e2d\u5c1d\u8bd5\u8fdb\u884c\u67e5\u8be2\u641c\u7d22\u3002 1. \u5f62\u6210 sample-jpa02 \u2502 build.grad […]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-40218","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u4f7f\u7528SpringBoot + Spring JPA\u6765\u4f7f\u7528\u539f\u751f\u67e5\u8be2 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528springboot-spring-jpa\u6765\u4f7f\u7528\u539f\u751f\u67e5\u8be2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u4f7f\u7528SpringBoot + Spring JPA\u6765\u4f7f\u7528\u539f\u751f\u67e5\u8be2\" \/>\n<meta property=\"og:description\" content=\"\u6211\u5c06\u5728SpringBoot\u4e2d\u5c1d\u8bd5\u8fdb\u884c\u67e5\u8be2\u641c\u7d22\u3002 1. \u5f62\u6210 sample-jpa02 \u2502 build.grad […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528springboot-spring-jpa\u6765\u4f7f\u7528\u539f\u751f\u67e5\u8be2\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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