SpringBoot如何整合JPA |
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上一篇:SpringBoot的事务管理 | 带你读《SpringBoot实战教程》之二十三下一篇:如何在SpringBoot中实现邮件的发送? | 带你读《SpringBoot实战教程》之二十五 本文来自于千锋教育在阿里云开发者社区学习中心上线课程《SpringBoot实战教程》,主讲人杨红艳,点击查看视频内容。 SpringBoot整合JPA-Hibernate添加依赖: org.springframework.boot spring-boot-starter-data-jpa mysql mysql-connector-java创建全局配置文件:application.properties,添加与JPA有关的信息以及连接数据库:使用db6数据库 spring.datasource.driver-class-name=com.mysql.jdbc.Driver spring.datasource.username=root spring.datasource.password=root spring.datasource.url=jdbc:mysql://localhost:3306/db6 #让控制器输出json字符串格式 spring.jackson.serialization.indent-output=true spring.jpa.hibernate.ddl-auto=update spring.jpa.show-sql=true spring.jpa.hibernate.dialect=org.hibernate.dialect.MySQL5Dialect新建包:com.qianfeng.pojo,生成实体类 @Entity @Table(name="t_user") public class User { @Id @GeneratedValue(strategy=GenerationType.IDENTITY) private Integer id; @Column private String name; private String password; private String email; private Date birthday; public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } public Date getBirthday() { return birthday; } public void setBirthday(Date birthday) { this.birthday = birthday; } }实现添加功能UserDao: public interface UserDao extends JpaRepository{ }UserService: public interface UserService { void addUser(User user); }UserServiceImpl: @Service public class UserServiceImpl implements UserService { @Autowired private UserDao userDao; @Override public void addUser(User user) { userDao.save(user); } }UserController: @Controller public class UserController { private UserService userService; @RequestMapping("/save") @ResponseBody public String saveUser() { User user = new User(); user.setName("小花"); user.setPassword("123"); user.setEmail("[email protected]"); user.setBirthday(new Date()); userService.addUser(user); return "success"; } }在启动类中添加所有需要扫描的包 @SpringBootApplication(scanBasePackages="com.qianfeng") @EntityScan("com.qianfeng.pojo") //扫描实体类 @EnableJpaRepositories("com.qianfeng.dao") //扫描dao执行结果: 添加查找和删除功能:UserService: void findUser(Integer id); void delUser(Integer id);UserServiceImpl: @Override public User findUser(Integer id) { return userDao.findOne(id); } public void delUser(Integer id) { userDao.delete(id); }UserController: @RequestMapping("/find/{id}") @ResponseBody public User findUser(@PathVariable Integer id) { return userService.findUser(id); } @RequestMapping("/del/{id}") @ResponseBody public String delUser(@PathVariable Integer id) { userService.delUser(id); return "ok"; }执行查找结果:执行删除结果: 配套视频 |
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