本文來自於千鋒教育在阿里雲開發者社區學習中心上線課程《SpringBoot實戰教程》，主講人楊紅豔，點擊查看視頻內容。
SpringBoot整合JPA-Hibernate
添加依賴：
<!-- springboot整合jpa -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>創建全局配置文件：application.properties，添加與JPA有關的信息以及連接數據庫：使用db6數據庫
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
#讓控制器輸出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，生成實體類
@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;
}
}實現添加功能
UserDao：
public interface UserDao extends JpaRepository<User, Integer>{
}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";
}
}在啟動類中添加所有需要掃描的包
@SpringBootApplication(scanBasePackages="com.qianfeng")
@EntityScan("com.qianfeng.pojo") //掃描實體類
@EnableJpaRepositories("com.qianfeng.dao") //掃描dao執行結果：
添加查找和刪除功能：
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";
}執行查找結果：
執行刪除結果：
