{"id":1781,"date":"2023-03-26T22:33:08","date_gmt":"2023-03-26T14:33:08","guid":{"rendered":"https:\/\/www.appblog.cn\/?p=1781"},"modified":"2023-04-23T21:17:05","modified_gmt":"2023-04-23T13:17:05","slug":"use-of-jpa-in-spring-boot","status":"publish","type":"post","link":"https:\/\/www.appblog.cn\/index.php\/2023\/03\/26\/use-of-jpa-in-spring-boot\/","title":{"rendered":"Spring Boot \u4e2d JPA \u7684\u4f7f\u7528"},"content":{"rendered":"

JPA\u7b80\u4ecb<\/h2>\n

JPA<\/code>\u5168\u79f0Java Persistence API<\/code>\uff0cJPA\u901a\u8fc7JDK 5.0\u6ce8\u89e3\u6216XML\u63cf\u8ff0\u5bf9\u8c61\uff0d\u5173\u7cfb\u8868\u7684\u6620\u5c04\u5173\u7cfb\uff0c\u5e76\u5c06\u8fd0\u884c\u671f\u7684\u5b9e\u4f53\u5bf9\u8c61\u6301\u4e45\u5316\u5230\u6570\u636e\u5e93\u4e2d\u3002<\/p>\n

\u9879\u76ee\u4f9d\u8d56<\/h2>\n

<\/p>\n

<dependency>\n    <groupId>org.springframework.boot<\/groupId>\n    <artifactId>spring-boot-starter-data-jpa<\/artifactId>\n<\/dependency>\n<dependency>\n    <groupId>mysql<\/groupId>\n    <artifactId>mysql-connector-java<\/artifactId>\n    <version>6.0.6<\/version>\n<\/dependency><\/code><\/pre>\n
\u9879\u76ee\u914d\u7f6e<\/h2>\n
#\u901a\u7528\u6570\u636e\u6e90\u914d\u7f6e\nspring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver\nspring.datasource.url=jdbc:mysql:\/\/127.0.0.1:3306\/test?charset=utf8mb4&useSSL=false\nspring.datasource.username=springboot\nspring.datasource.password=springboot\n# Hikari \u6570\u636e\u6e90\u4e13\u7528\u914d\u7f6e\nspring.datasource.hikari.maximum-pool-size=20\nspring.datasource.hikari.minimum-idle=5\n# JPA \u76f8\u5173\u914d\u7f6e\nspring.jpa.database-platform=org.hibernate.dialect.MySQL5InnoDBDialect\nspring.jpa.show-sql=true\nspring.jpa.hibernate.ddl-auto=create<\/code><\/pre>\n
    \n
  • spring.jpa.show-sql=true<\/code> \u914d\u7f6e\u5728\u65e5\u5fd7\u4e2d\u6253\u5370\u51fa\u6267\u884c\u7684 SQL \u8bed\u53e5\u4fe1\u606f<\/li>\n
  • spring.jpa.hibernate.ddl-auto=create<\/code> \u914d\u7f6e\u6307\u660e\u5728\u7a0b\u5e8f\u542f\u52a8\u7684\u65f6\u5019\u8981\u5220\u9664\u5e76\u4e14\u521b\u5efa\u5b9e\u4f53\u7c7b\u5bf9\u5e94\u7684\u8868\u3002\u8fd9\u4e2a\u53c2\u6570\u5f88\u5371\u9669\uff0c\u56e0\u4e3a\u4f1a\u628a\u5bf9\u5e94\u7684\u8868\u5220\u9664\u6389\u7136\u540e\u91cd\u5efa\u3002\u6240\u4ee5\u5343\u4e07\u4e0d\u8981\u5728\u751f\u4ea7\u73af\u5883\u4e2d\u4f7f\u7528\u3002\u53ea\u6709\u5728\u6d4b\u8bd5\u73af\u5883\u4e2d\uff0c\u4e00\u5f00\u59cb\u521d\u59cb\u5316\u6570\u636e\u5e93\u7ed3\u6784\u7684\u65f6\u5019\u624d\u80fd\u4f7f\u7528\u4e00\u6b21\u3002<\/li>\n
  • spring.jpa.database-platform=org.hibernate.dialect.MySQL5InnoDBDialect<\/code> \u5728 Srping Boot 2.0 \u7248\u672c\u4e2d\uff0cHibernate<\/code>\u521b\u5efa\u6570\u636e\u8868\u7684\u65f6\u5019\uff0c\u9ed8\u8ba4\u7684\u6570\u636e\u5e93\u5b58\u50a8\u5f15\u64ce\u9009\u62e9\u7684\u662fMyISAM<\/code>\uff08\u4e4b\u524d\u597d\u50cf\u662fInnoDB<\/code>\uff0c\u8fd9\u70b9\u6bd4\u8f83\u8be1\u5f02\uff09\u3002\u8fd9\u4e2a\u53c2\u6570\u662f\u5728\u5efa\u8868\u7684\u65f6\u5019\uff0c\u5c06\u9ed8\u8ba4\u7684\u5b58\u50a8\u5f15\u64ce\u5207\u6362\u4e3aInnoDB<\/code>\u7528\u7684\u3002<\/li>\n<\/ul>\n
    \u6570\u636e\u5b9e\u4f53\u7c7b<\/h2>\n
    \u6570\u636e\u5e93\u5b9e\u4f53\u7c7b\u662f\u4e00\u4e2aPOJO Bean<\/code>\u5bf9\u8c61\u3002\u8fd9\u91cc\u6211\u4eec\u5148\u5efa\u7acb\u4e00\u4e2aUserDO<\/code>\u7684\u6570\u636e\u5e93\u5b9e\u4f53\u3002\u6570\u636e\u5e93\u5b9e\u4f53\u7684\u6e90\u7801\u5982\u4e0b\uff1a<\/p>\n
    import javax.persistence.*;\n\n@Data\n@Entity\n@Table(name = "AUTH_USER")\npublic class UserDO {\n    @Id\n    private Long id;\n    @Column(length = 32)\n    private String name;\n    @Column(length = 32)\n    private String account;\n    @Column(length = 64)\n    private String pwd;\n}<\/code><\/pre>\n
    \u5176\u4e2d\uff1a<\/p>\n
      \n
    • @Entity<\/code> \u662f\u4e00\u4e2a\u5fc5\u9009\u7684\u6ce8\u89e3\uff0c\u58f0\u660e\u8fd9\u4e2a\u7c7b\u5bf9\u5e94\u4e86\u4e00\u4e2a\u6570\u636e\u5e93\u8868<\/li>\n
    • @Table(name = "AUTH_USER")<\/code> \u662f\u4e00\u4e2a\u53ef\u9009\u7684\u6ce8\u89e3\u3002\u58f0\u660e\u4e86\u6570\u636e\u5e93\u5b9e\u4f53\u5bf9\u5e94\u7684\u8868\u4fe1\u606f\uff0c\u5305\u62ec\u8868\u540d\u79f0\u3001\u7d22\u5f15\u4fe1\u606f\u7b49\u3002\u8fd9\u91cc\u58f0\u660e\u8fd9\u4e2a\u5b9e\u4f53\u7c7b\u5bf9\u5e94\u7684\u8868\u540d\u662fAUTH_USER<\/code>\u3002\u5982\u679c\u6ca1\u6709\u6307\u5b9a\uff0c\u5219\u8868\u540d\u548c\u5b9e\u4f53\u7684\u540d\u79f0\u4fdd\u6301\u4e00\u81f4<\/li>\n
    • @Id<\/code> \u6ce8\u89e3\u58f0\u660e\u4e86\u5b9e\u4f53\u552f\u4e00\u6807\u8bc6\u5bf9\u5e94\u7684\u5c5e\u6027<\/li>\n
    • @Column(length = 32)<\/code> \u7528\u6765\u58f0\u660e\u5b9e\u4f53\u5c5e\u6027\u7684\u8868\u5b57\u6bb5\u7684\u5b9a\u4e49\u3002\u9ed8\u8ba4\u7684\u5b9e\u4f53\u6bcf\u4e2a\u5c5e\u6027\u90fd\u5bf9\u5e94\u4e86\u8868\u7684\u4e00\u4e2a\u5b57\u6bb5\u3002\u5b57\u6bb5\u7684\u540d\u79f0\u9ed8\u8ba4\u548c\u5c5e\u6027\u540d\u79f0\u4fdd\u6301\u4e00\u81f4\uff08\u5e76\u4e0d\u4e00\u5b9a\u76f8\u7b49\uff09\u3002\u5b57\u6bb5\u7684\u7c7b\u578b\u6839\u636e\u5b9e\u4f53\u5c5e\u6027\u7c7b\u578b\u81ea\u52a8\u63a8\u65ad\u3002\u8fd9\u91cc\u4e3b\u8981\u662f\u58f0\u660e\u4e86\u5b57\u7b26\u5b57\u6bb5\u7684\u957f\u5ea6\u3002\u5982\u679c\u4e0d\u8fd9\u4e48\u58f0\u660e\uff0c\u5219\u7cfb\u7edf\u4f1a\u91c7\u7528255<\/code>\u4f5c\u4e3a\u8be5\u5b57\u6bb5\u7684\u957f\u5ea6<\/li>\n<\/ul>\n
      \u4ee5\u4e0a\u914d\u7f6e\u5168\u90e8\u6b63\u786e\uff0c\u5219\u6b64\u65f6\u8fd0\u884c\u8fd9\u4e2a\u9879\u76ee\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u770b\u5230\u65e5\u5fd7\u4e2d\u5982\u4e0b\u7684\u5185\u5bb9\uff1a<\/p>\n
      Hibernate: drop table if exists auth_user\nHibernate: create table auth_user (id bigint not null, account varchar(32), name varchar(32), pwd varchar(64), primary key (id)) engine=InnoDB<\/code><\/pre>\n
      \u7cfb\u7edf\u5c06\u81ea\u52a8\u521b\u5efa\u8868\u53ca\u8868\u7ed3\u6784<\/p>\n
      \u5b9e\u73b0\u6301\u4e45\u5c42\u670d\u52a1<\/h2>\n
      \u5728Spring Data JPA<\/code>\u7684\u4e16\u754c\u91cc\uff0c\u5b9e\u73b0\u4e00\u4e2a\u6301\u4e45\u5c42\u7684\u670d\u52a1\u662f\u4e00\u4e2a\u975e\u5e38\u7b80\u5355\u7684\u4e8b\u60c5\u3002\u4ee5\u4e0a\u9762\u7684UserDO<\/code>\u5b9e\u4f53\u5bf9\u8c61\u4e3a\u4f8b\uff0c\u8981\u5b9e\u73b0\u4e00\u4e2a\u589e\u52a0\u3001\u5220\u9664\u3001\u4fee\u6539\u3001\u67e5\u8be2\u529f\u80fd\u7684\u6301\u4e45\u5c42\u670d\u52a1\uff0c\u90a3\u4e48\u53ea\u9700\u8981\u58f0\u660e\u4e00\u4e2a\u63a5\u53e3\uff0c\u8fd9\u4e2a\u63a5\u53e3\u7ee7\u627forg.springframework.data.repository.Repository<T, ID><\/code>\u63a5\u53e3\u6216\u8005\u5176\u5b50\u63a5\u53e3\u5c31\u884c\u3002\u8fd9\u91cc\u4e3a\u4e86\u529f\u80fd\u7684\u5b8c\u5907\uff0c\u6211\u4eec\u7ee7\u627forg.springframework.data.jpa.repository.JpaRepository<T, ID><\/code>\u63a5\u53e3\u3002\u5176\u4e2dT<\/code>\u6570\u636e\u5e93\u5b9e\u4f53\u7c7b\uff0cID<\/code>\u662f\u6570\u636e\u5e93\u5b9e\u4f53\u7c7b\u7684\u4e3b\u952e\u3002<\/p>\n
      \u7136\u540e\u518d\u7b80\u5355\u7684\u5728\u8fd9\u4e2a\u63a5\u53e3\u4e0a\u589e\u52a0\u4e00\u4e2a@Repository<\/code>\u6ce8\u89e3\u5373\u53ef<\/p>\n
      import org.springframework.data.jpa.repository.JpaRepository;\nimport org.springframework.stereotype.Repository;\n\n\/**\n * \u7528\u6237\u670d\u52a1\u6570\u636e\u63a5\u53e3\u7c7b\n *\/\n@Repository\npublic interface UserDao extends JpaRepository<UserDO, Long> {\n}<\/code><\/pre>\n
      \u4e00\u884c\u4ee3\u7801\u4e5f\u4e0d\u7528\u5199\u3002\u9488\u5bf9UserDO<\/code>\u8fd9\u4e2a\u5b9e\u4f53\u7c7b\uff0c\u6211\u4eec\u5df2\u7ecf\u62e5\u6709JpaRepository<\/code>\u63a5\u53e3\u7684\u6240\u6709\u529f\u80fd<\/p>\n
      \u6d4b\u8bd5\u6570\u636e<\/h2>\n
      import org.junit.After;\nimport org.junit.Before;\nimport org.junit.Test;\nimport org.junit.runner.RunWith;\nimport org.springframework.beans.factory.annotation.Autowired;\nimport org.springframework.boot.test.context.SpringBootTest;\nimport org.springframework.test.context.junit4.SpringRunner;\n\nimport java.util.Optional;\n\n@RunWith(SpringRunner.class)\n@SpringBootTest\npublic class UserDOTest {\n\n    @Autowired\n    private UserDao userDao;\n\n    @Before\n    public void before() {\n        UserDO userDO = new UserDO();\n        userDO.setId(1L);\n        userDO.setName("\u98ce\u6e05\u626c");\n        userDO.setAccount("fengqy");\n        userDO.setPwd("123456");\n        userDao.save(userDO);\n        userDO = new UserDO();\n        userDO.setId(3L);\n        userDO.setName("\u4e1c\u65b9\u4e0d\u8d25");\n        userDO.setAccount("bubai");\n        userDO.setPwd("123456");\n        userDao.save(userDO);\n        userDO.setId(5L);\n        userDO.setName("\u5411\u95ee\u5929");\n        userDO.setAccount("wentian");\n        userDO.setPwd("123456");\n        userDao.save(userDO);\n    }\n\n    @Test\n    public void testAdd() {\n        UserDO userDO = new UserDO();\n        userDO.setId(2L);\n        userDO.setName("\u4efb\u6211\u884c");\n        userDO.setAccount("renwox");\n        userDO.setPwd("123456");\n        userDao.save(userDO);\n        userDO = new UserDO();\n        userDO.setId(4L);\n        userDO.setName("\u4ee4\u72d0\u51b2");\n        userDO.setAccount("linghuc");\n        userDO.setPwd("123456");\n        userDao.save(userDO);\n    }\n\n    @After\n    public void after() {\n        userDao.deleteById(1L);\n        userDao.deleteById(3L);\n        userDao.deleteById(5L);\n    }\n}<\/code><\/pre>\n
      \u8fd9\u91cc\u91c7\u7528Junit<\/code>\u6765\u6267\u884c\u6d4b\u8bd5\u7528\u4f8b\u3002@Before<\/code>\u6ce8\u89e3\u5728\u6d4b\u8bd5\u7528\u4f8b\u4e4b\u524d\u6267\u884c\u51c6\u5907\u7684\u4ee3\u7801\u3002\u8fd9\u91cc\u5148\u63d2\u5165\u4e09\u4e2a\u7528\u6237\u4fe1\u606f\u3002\u6267\u884c\u8be5\u6d4b\u8bd5\uff0c\u67e5\u770b\u6570\u636e\u5e93\u5373\u53ef\u770b\u5230\u6570\u636e\u5e93\u4e2d\u6709\u4e865<\/code>\u6761\u8bb0\u5f55<\/p>\n
      \u6211\u4eec\u8fd8\u53ef\u4ee5\u901a\u8fc7\u6d4b\u8bd5\u7528\u4f8b\u9a8c\u8bc1\u901a\u8fc7\u6807\u8bc6\u67e5\u627e\u5bf9\u8c61\u529f\u80fd\uff0c\u9a8c\u8bc1\u6240\u6709\u6570\u636e\u67e5\u8be2\u529f\u80fd\u7684\u6b63\u786e\u6027\uff0c\u67e5\u8be2\u529f\u80fd\u751a\u81f3\u53ef\u4ee5\u8fdb\u884c\u6392\u5e8f\u548c\u5206\u9875<\/p>\n
      @Test\npublic void testLocate() {\n    Optional<UserDO> userDOOptiona = userDao.findById(1L);\n    if (userDOOptiona.isPresent()) {\n        UserDO userDO = userDOOptiona.get();\n        System.out.println("name = " + userDO.getName());\n        System.out.println("account = " + userDO.getAccount());\n    }\n}\n\n@Test\npublic void testFindAll() {\n    List<UserDO> userDOList = userDao.findAll(new Sort(Sort.Direction.DESC,"account"));\n    for (UserDO userDO : userDOList) {\n        System.out.println("name = " + userDO.getName());\n        System.out.println("account = " + userDO.getAccount());\n    }\n}<\/code><\/pre>\n
      \u53ef\u4ee5\u770b\u5230\uff0c\u6211\u4eec\u6240\u505a\u7684\u5168\u90e8\u4e8b\u60c5\u4ec5\u4ec5\u662f\u5728Sping Boot<\/code>\u5de5\u7a0b\u91cc\u9762\u589e\u52a0\u6570\u636e\u5e93\u914d\u7f6e\u4fe1\u606f\uff0c\u58f0\u660e\u4e00\u4e2aUserDO<\/code>\u7684\u6570\u636e\u5e93\u5b9e\u4f53\u5bf9\u8c61\uff0c\u7136\u540e\u58f0\u660e\u4e00\u4e2a\u6301\u4e45\u5c42\u7684\u63a5\u53e3\uff0c\u6539\u63a5\u53e3\u7ee7\u627f\u81eaorg.springframework.data.jpa.repository.JpaRepository<T, ID><\/code>\u63a5\u53e3\u3002\u7136\u540e\uff0c\u7cfb\u7edf\u5c31\u81ea\u52a8\u62e5\u6709\u4e86\u4e30\u5bcc\u7684\u589e\u52a0\u3001\u5220\u9664\u3001\u4fee\u6539\u3001\u67e5\u8be2\u529f\u80fd\u3002\u67e5\u8be2\u529f\u80fd\u751a\u81f3\u8fd8\u62e5\u6709\u4e86\u6392\u5e8f\u548c\u5206\u9875\u7684\u529f\u80fd\u3002<\/p>\n
      \u8fd9\u5c31\u662fJPA<\/code>\u7684\u5f3a\u5927\u4e4b\u5904\u3002\u9664\u4e86\u8fd9\u4e9b\u63a5\u53e3\u5916\uff0c\u7528\u6237\u8fd8\u4f1a\u6709\u5176\u4ed6\u7684\u4e00\u4e9b\u9700\u6c42\uff0cJPA<\/code>\u4e5f\u4e00\u6837\u53ef\u4ee5\u6ee1\u8db3\u9700\u6c42\u3002<\/p>\n
      \u6269\u5c55\u67e5\u8be2<\/h2>\n
      \u6839\u636e\u5c5e\u6027\u6765\u67e5\u8be2<\/h3>\n
      \u5982\u679c\u60f3\u8981\u6839\u636e\u5b9e\u4f53\u7684\u67d0\u4e2a\u5c5e\u6027\u6765\u8fdb\u884c\u67e5\u8be2\u6211\u4eec\u53ef\u4ee5\u5728UserDao<\/code>\u63a5\u53e3\u4e2d\u8fdb\u884c\u58f0\u660e\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60f3\u6839\u636e\u5b9e\u4f53\u7684account<\/code>\u8fd9\u4e2a\u5c5e\u6027\u6765\u8fdb\u884c\u67e5\u8be2\uff08\u5728\u767b\u5f55\u529f\u80fd\u7684\u65f6\u5019\u53ef\u80fd\u4f1a\u7528\u5230\uff09\u3002\u6211\u4eec\u5728UserDao<\/code>\u4e2d\u589e\u52a0\u4e00\u4e2a\u63a5\u53e3\u58f0\u660e\u5373\u53ef<\/p>\n
      UserDO findByAccount(String account);<\/code><\/pre>\n
      \u7136\u540e\u589e\u52a0\u4e00\u4e2a\u6d4b\u8bd5\u7528\u4f8b<\/p>\n
      @Test\npublic void testFindByAccount() {\n    UserDO userDO = userDao.findByAccount("wentian");\n    if (userDO != null) {\n        System.out.println("name = " + userDO.getName());\n        System.out.println("account = " + userDO.getAccount());\n    }\n}<\/code><\/pre>\n
      \u8fd0\u884c\u4e4b\u540e\uff0c\u4f1a\u5728\u65e5\u5fd7\u4e2d\u6253\u5370\u51fa<\/p>\n
      name = \u5411\u95ee\u5929\naccount = wentian<\/code><\/pre>\n
      \u8fd9\u79cd\u65b9\u5f0f\u975e\u5e38\u5f3a\u5927\uff0c\u4e0d\u4ec5\u80fd\u591f\u652f\u6301\u5355\u4e2a\u5c5e\u6027\uff0c\u8fd8\u80fd\u652f\u6301\u591a\u4e2a\u5c5e\u6027\u7ec4\u5408\u3002\u4f8b\u5982\u5982\u679c\u6211\u4eec\u60f3\u67e5\u627e\u8d26\u53f7\u548c\u5bc6\u7801\u540c\u65f6\u6ee1\u8db3\u67e5\u8be2\u6761\u4ef6\u7684\u63a5\u53e3\u3002\u90a3\u4e48\u6211\u4eec\u5728UserDao<\/code>\u63a5\u53e3\u4e2d\u58f0\u660e<\/p>\n
      UserDO findByAccountAndPwd(String account, String pwd);<\/code><\/pre>\n
      \u518d\u4f8b\u5982\uff0c\u6211\u4eec\u8981\u67e5\u8be2id<\/code>\u5927\u4e8e\u67d0\u4e2a\u6761\u4ef6\u7684\u7528\u6237\u5217\u8868\uff0c\u5219\u53ef\u4ee5\u58f0\u660e\u5982\u4e0b\u7684\u63a5\u53e3<\/p>\n
      List<UserDO> findAllByIdGreaterThan(Long id);<\/code><\/pre>\n
      \u8fd9\u4e2a\u8bed\u53e5\u7ed3\u6784\u53ef\u4ee5\u7528\u4e0b\u9762\u7684\u8868\uff08JPA\u5173\u952e\u5b57\uff09\u8bf4\u660e<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
      \u5173\u952e\u5b57<\/th>\n\u65b9\u6cd5\u547d\u540d<\/th>\nsql where\u5b57\u53e5<\/th>\n<\/tr>\n<\/thead>\n
      And<\/code><\/td>\nfindByNameAndPwd<\/code><\/td>\nwhere name= ? and pwd =?<\/code><\/td>\n<\/tr>\n
      Or<\/code><\/td>\nfindByNameOrSex<\/code><\/td>\nwhere name= ? or sex=?<\/code><\/td>\n<\/tr>\n
      Is,Equals<\/code><\/td>\nfindById,findByIdEquals<\/code><\/td>\nwhere id= ?<\/code><\/td>\n<\/tr>\n
      Between<\/code><\/td>\nfindByIdBetween<\/code><\/td>\nwhere id between ? and ?<\/code><\/td>\n<\/tr>\n
      LessThan<\/code><\/td>\nfindByIdLessThan<\/code><\/td>\nwhere id < ?<\/code><\/td>\n<\/tr>\n
      LessThanEquals<\/code><\/td>\nfindByIdLessThanEquals<\/code><\/td>\nwhere id <= ?<\/code><\/td>\n<\/tr>\n
      GreaterThan<\/code><\/td>\nfindByIdGreaterThan<\/code><\/td>\nwhere id > ?<\/code><\/td>\n<\/tr>\n
      GreaterThanEquals<\/code><\/td>\nfindByIdGreaterThanEquals<\/code><\/td>\nwhere id > = ?<\/code><\/td>\n<\/tr>\n
      After<\/code><\/td>\nfindByIdAfter<\/code><\/td>\nwhere id > ?<\/code><\/td>\n<\/tr>\n
      Before<\/code><\/td>\nfindByIdBefore<\/code><\/td>\nwhere id < ?<\/code><\/td>\n<\/tr>\n
      IsNull<\/code><\/td>\nfindByNameIsNull<\/code><\/td>\nwhere name is null<\/code><\/td>\n<\/tr>\n
      isNotNull,NotNull<\/code><\/td>\nfindByNameNotNull<\/code><\/td>\nwhere name is not null<\/code><\/td>\n<\/tr>\n
      Like<\/code><\/td>\nfindByNameLike<\/code><\/td>\nwhere name like ?<\/code><\/td>\n<\/tr>\n
      NotLike<\/code><\/td>\nfindByNameNotLike<\/code><\/td>\nwhere name not like ?<\/code><\/td>\n<\/tr>\n
      StartingWith<\/code><\/td>\nfindByNameStartingWith<\/code><\/td>\nwhere name like '?%'<\/code><\/td>\n<\/tr>\n
      EndingWith<\/code><\/td>\nfindByNameEndingWith<\/code><\/td>\nwhere name like '%?'<\/code><\/td>\n<\/tr>\n
      Containing<\/code><\/td>\nfindByNameContaining<\/code><\/td>\nwhere name like '%?%'<\/code><\/td>\n<\/tr>\n
      OrderBy<\/code><\/td>\nfindByIdOrderByXDesc<\/code><\/td>\nwhere id=? order by x desc<\/code><\/td>\n<\/tr>\n
      Not<\/code><\/td>\nfindByNameNot<\/code><\/td>\nwhere name <> ?<\/code><\/td>\n<\/tr>\n
      In<\/code><\/td>\nfindByIdIn(Collection<?> c)<\/code><\/td>\nwhere id in (?)<\/code><\/td>\n<\/tr>\n
      NotIn<\/code><\/td>\nfindByIdNotIn(Collection<?> c)<\/code><\/td>\nwhere id not in (?)<\/code><\/td>\n<\/tr>\n
      True<\/code><\/td>\nfindByAaaTue<\/code><\/td>\nwhere aaa = true<\/code><\/td>\n<\/tr>\n
      False<\/code><\/td>\nfindByAaaFalse<\/code><\/td>\nwhere aaa = false<\/code><\/td>\n<\/tr>\n
      IgnoreCase<\/code><\/td>\nfindByNameIgnoreCase<\/code><\/td>\nwhere UPPER(name)=UPPER(?)<\/code><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
      \u81ea\u5b9a\u4e49\u67e5\u8be2<\/h3>\n
      \u5982\u679c\u4e0a\u8ff0\u7684\u60c5\u51b5\u8fd8\u65e0\u6cd5\u6ee1\u8db3\u9700\u8981\u3002\u90a3\u4e48\u6211\u4eec\u5c31\u53ef\u4ee5\u901a\u8fc7\u901a\u8fc7import org.springframework.data.jpa.repository.Query<\/code>\u6ce8\u89e3\u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002\u4f8b\u5982\u6211\u4eec\u60f3\u67e5\u8be2\u540d\u79f0\u7b49\u4e8e\u67d0\u4e24\u4e2a\u540d\u5b57\u7684\u6240\u6709\u7528\u6237\u5217\u8868\uff0c\u5219\u58f0\u660e\u5982\u4e0b\u7684\u63a5\u53e3\u5373\u53ef<\/p>\n
      @Query("SELECT O FROM UserDO O WHERE O.name = :name1 OR O.name = :name2")\nList<UserDO> findTwoName(@Param("name1") String name1, @Param("name2") String name2);<\/code><\/pre>\n
      \u8fd9\u91cc\u662f\u7528PQL<\/code>\u7684\u8bed\u6cd5\u6765\u5b9a\u4e49\u4e00\u4e2a\u67e5\u8be2\u3002\u5176\u4e2d\u4e24\u4e2a\u53c2\u6570\u540d\u5b57\u7531\u8bed\u53e5\u4e2d\u7684:<\/code>\u540e\u9762\u7684\u5b57\u7b26\u6765\u51b3\u5b9a<\/p>\n
      \u5982\u679c\u4f60\u4e60\u60ef\u7f16\u5199SQL<\/code>\u8bed\u53e5\u6765\u5b8c\u6210\u67e5\u8be2\uff0c\u8fd8\u53ef\u4ee5\u518d\u7528\u4e0b\u9762\u7684\u65b9\u5f0f\u5b9e\u73b0<\/p>\n
      @Query(nativeQuery = true, value = "SELECT * FROM AUTH_USER WHERE name = :name1 OR name = :name2")\nList<UserDO> findSQL(@Param("name1") String name1, @Param("name2") String name2);<\/code><\/pre>\n
      \u8fd9\u91cc\u5728@Query<\/code>\u6ce8\u89e3\u4e2d\u589e\u52a0\u4e00\u4e2anativeQuery = true<\/code>\u7684\u5c5e\u6027\uff0c\u5c31\u53ef\u4ee5\u91c7\u7528\u539f\u751fSQL<\/code>\u8bed\u53e5\u7684\u65b9\u5f0f\u6765\u7f16\u5199\u67e5\u8be2\u3002<\/p>\n
      \u8054\u5408\u4e3b\u952e<\/h2>\n
      \u4eceorg.springframework.data.jpa.repository.JpaRepository<T, ID><\/code>\u63a5\u53e3\u5b9a\u4e49\u6765\u770b\uff0c\u6570\u636e\u5b9e\u4f53\u7684\u4e3b\u952e\u662f\u4e00\u4e2a\u5355\u72ec\u7684\u5bf9\u8c61\uff0c\u90a3\u4e48\u5982\u679c\u4e00\u4e2a\u6570\u636e\u5e93\u7684\u8868\u7684\u4e3b\u952e\u662f\u4e24\u4e2a\u6216\u8005\u4e24\u4e2a\u4ee5\u4e0a\u5b57\u6bb5\u8054\u5408\u7ec4\u6210\u7684\u600e\u4e48\u89e3\u51b3\u5462\u3002<\/p>\n
      \u6211\u4eec\u6269\u5145\u4e00\u4e0b\u524d\u9762\u7684\u573a\u666f\u3002\u5047\u5982\u6211\u4eec\u6709\u4e00\u4e2a\u89d2\u8272Role<\/code>\u5bf9\u8c61\uff0c\u6709\u4e24\u4e2a\u5c5e\u6027\uff1a\u4e00\u4e2aid<\/code>\uff0c\u4e00\u4e2aname<\/code>\uff0c\u5bf9\u5e94auth_role<\/code>\u6570\u636e\u8868\uff0c\u540c\u65f6\u6709\u4e00\u4e2a\u89d2\u8272\u7528\u6237\u5173\u7cfb\u5bf9\u8c61RoleUser<\/code>\uff0c\u8bf4\u660e\u89d2\u8272\u548c\u7528\u6237\u5bf9\u5e94\u5173\u7cfb\uff0c\u6709\u4e24\u4e2a\u5c5e\u6027roleId<\/code>\u548cuserId<\/code>\uff0c\u5bf9\u5e94auth_role_user<\/code>\u8868\u3002\u90a3\u4e48\u6211\u4eec\u9700\u8981\u58f0\u660e\u4e00\u4e2aRoleDO<\/code>\u5bf9\u8c61\u5982\u4e0b<\/p>\n
      import javax.persistence.*;\n\n\/**\n * \u89d2\u8272\u5b9e\u4f53\u7c7b\n *\/\n @Data\n@Entity\n@Table(name = "AUTH_ROLE")\npublic class RoleDO {\n    @Id\n    private Long id;\n    @Column(length = 32)\n    private String name;\n    @Column(length = 64)\n    private String note;\n}<\/code><\/pre>\n
      \u5bf9\u4e8e\u6709\u591a\u4e2a\u5c5e\u6027\u4f5c\u4e3a\u8054\u5408\u4e3b\u952e\u7684\u60c5\u51b5\uff0c\u6211\u4eec\u4e00\u822c\u8981\u65b0\u5efa\u4e00\u4e2a\u5355\u72ec\u7684\u4e3b\u952e\u7c7b\uff0c\u5b83\u7684\u5c5e\u6027\u548c\u6570\u636e\u5e93\u5b9e\u4f53\u4e3b\u952e\u7684\u5b57\u6bb5\u4e00\u6837\uff0c\u8981\u5b9e\u73b0java.io.Serializable<\/code>\u63a5\u53e3\uff0c\u7c7b\u58f0\u660e\u5982\u4e0b<\/p>\n
      import java.io.Serializable;\n\n\/**\n * \u8054\u5408\u4e3b\u952e\u5bf9\u8c61\n *\/\npublic class RoleUserId implements Serializable {\n    private Long roleId;\n    private Long userId;\n}<\/code><\/pre>\n
      \u540c\u6837\u7684\uff0c\u6211\u4eec\u58f0\u660e\u4e00\u4e2a RoleUserDO \u5bf9\u8c61\u5982\u4e0b<\/p>\n
      import javax.persistence.*;\nimport java.io.Serializable;\n\n\/**\n * \u89d2\u8272\u7528\u6237\u5173\u7cfb\u5b9e\u4f53\u7c7b\n *\/\n@Entity\n@IdClass(RoleUserId.class)\n@Table(name = "AUTH_ROLE_USER")\npublic class RoleUserDO  {\n    @Id\n    private Long roleId;\n    @Id\n    private Long userId;\n}<\/code><\/pre>\n
      \u8fd9\u91cc\u56e0\u4e3a\u6570\u636e\u5b9e\u4f53\u7c7b\u548c\u6570\u636e\u5b9e\u4f53\u4e3b\u952e\u7c7b\u7684\u5c5e\u6027\u4e00\u6837\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u5220\u9664\u6389\u8fd9\u4e2a\u6570\u636e\u5b9e\u4f53\u4e3b\u952e\u7c7b\uff0c\u7136\u540e\u5c06\u6570\u636e\u5b9e\u4f53\u7c7b\u7684\u4e3b\u952e\u7c7b\u58f0\u660e\u4e3a\u81ea\u5df1\u5373\u53ef\u3002\u5f53\u7136\uff0c\u81ea\u5df1\u4e5f\u8981\u5b9e\u73b0java.io.Serializable<\/code>\u63a5\u53e3\u3002<\/p>\n
      \u8fd9\u6837\uff0c\u6211\u4eec\u5982\u679c\u8981\u67e5\u8be2\u67d0\u4e2a\u89d2\u8272\u4e0b\u7684\u6240\u6709\u7528\u6237\u5217\u8868\uff0c\u5c31\u53ef\u4ee5\u58f0\u660e\u5982\u4e0b\u7684\u63a5\u53e3<\/p>\n
      @Query("SELECT U FROM UserDO U, RoleUserDO RU WHERE U.id = RU.userId AND RU.roleId = :roleId")\nList<UserDO> findUsersByRole(@Param("roleId") Long roleId);<\/code><\/pre>\n
      \u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u540c\u6837\u4f1a\u770b\u5230\u7cfb\u7edf\u81ea\u52a8\u5efa\u7acbAUTH_ROLE<\/code>\u548cAUTH_ROLE_USER<\/code>\u8868<\/p>\n
      \u6ce8\u610f\u8fd9\u91ccauth_role_user<\/code>\u8868\u4e2d\uff0c\u5c5e\u6027\u540duserId<\/code>\u8f6c\u6362\u4e3a\u4e86user_id<\/code>\uff0croleId<\/code>\u8f6c\u6362\u4e3a\u4e86role_id<\/code><\/p>\n
      \u5982\u679c\u6211\u4eec\u8981\u7528SQL<\/code>\u8bed\u53e5\u7684\u65b9\u5f0f\u5b9e\u73b0\u4e0a\u9762\u7684\u529f\u80fd\uff0c\u90a3\u4e48\u6211\u4eec\u5c31\u628a\u8fd9\u4e2a\u63a5\u53e3\u58f0\u660e\u4fee\u6539\u4e3a\u4e0b\u9762\u7684\u5f62\u5f0f\uff1a<\/p>\n
      @Query(nativeQuery = true, "SELECT U.* FROM AUTH_USER U, AUTH_ROLE_USER RU WHERE U.id = RU.user_id AND RU.role_id = :roleId")\nList<UserDO> findUsersByRole(@Param("roleId") Long roleId);<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
      JPA\u7b80\u4ecb JPA\u5168\u79f0Java Persistence API\uff0cJPA\u901a\u8fc7JDK 5.0\u6ce8\u89e3\u6216XML\u63cf\u8ff0\u5bf9\u8c61\uff0d […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[41],"tags":[451],"class_list":["post-1781","post","type-post","status-publish","format-standard","hentry","category-spring-boot","tag-jpa"],"_links":{"self":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1781","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/comments?post=1781"}],"version-history":[{"count":0,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/1781\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1781"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1781"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1781"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}