Spring Boot整合Mybatis并完成CRUD操作的实现示例

<!-- mysql驱动 -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
    </dependency>
      
    <!-- spring-boot整合mybatis -->
    <dependency>
      <groupId>org.mybatis.spring.boot</groupId>
      <artifactId>mybatis-spring-boot-starter</artifactId>
      <version>1.1.1</version>
    </dependency>

mybatis.config-location=classpath:mapper/mybatis_config.xml
mybatis.mapper-locations=classpath:mapper/*Mapper.xml
mybatis.type-aliases-package=com.shangguan.mybatis.entity

spring.datasource.driverClassName = com.mysql.cj.jdbc.Driver
spring.datasource.url = jdbc:mysql://localhost:3306/spring_boot?serverTimezone=GMT%2B8
spring.datasource.username = root
spring.datasource.password = 123456

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>

</configuration>

public class User implements Serializable {

  private static final long serialVersionUID = 1L;
  private Long id;
  private String userName;
  private String passWord;

  public User() {
    super();
  }

  public User(String userName, String passWord) {
    super();
    this.userName = userName;
    this.passWord = passWord;
  }

  public Long getId() {
    return id;
  }

  public void setId(Long id) {
    this.id = id;
  }

  public String getUserName() {
    return userName;
  }

  public void setUserName(String userName) {
    this.userName = userName;
  }

  public String getPassWord() {
    return passWord;
  }

  public void setPassWord(String passWord) {
    this.passWord = passWord;
  }

  @Override
  public String toString() {
    return "userName " + this.userName + ", pasword " + this.passWord;
  }
}

public void updateUser(@Param("id") Long id, @Param("userName") String userName,
      @Param("passWord") String passWord);

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.shangguan.mybatis.mapper.UserMapper">
   <resultMap id="BaseResultMap" type="com.shangguan.mybatis.mapper.UserMapper" >
    <id column="id" property="id" jdbcType="BIGINT" />
    <result column="userName" property="userName" jdbcType="VARCHAR" />
    <result column="passWord" property="passWord" jdbcType="VARCHAR" />
  </resultMap>
  
  <!--查询所有-->
  <select id="getAll" resultType="user">
    select * from user
  </select>
  
  <!--保存用户-->
  <insert id="saveUser" useGeneratedKeys="true" keyProperty="id">
    insert into user(username,password) values(#{userName},#{passWord})
  </insert>
  
  <!--通过Id删除用户-->
  <delete id="deleteUserById">
    delete from user where id =#{id}
  </delete>
  
  <!--更新该用户信息-->
  <update id="updateUser">
    update user set userName = #{userName},passWord = #{passWord}
    where id = #{id}
  </update>
  
</mapper>

@Mapper
public interface UserMapper {
  public List<User> getAll();
  public void saveUser(User user);
  public void deleteUserById(Long id);
  public void updateUser(@Param("id") Long id, @Param("userName") String userName,
      @Param("passWord") String passWord);
}

public interface UserService {

  public List<User> getAllUser();
  public void saveUser(User user);
  public void deleteUserById(Long id);
  public void updateUser(Long id, String userName, String passWord);

}

@Service
public class UserServiceImpl implements UserService {

  @Autowired
  private UserMapper userMapper;

  @Override
  public List<User> getAllUser() {
    List<User> list = userMapper.getAll();
    return list;
  }

  @Override
  public void saveUser(User user) {
    userMapper.saveUser(user);
  }

  @Override
  public void deleteUserById(Long id) {
    userMapper.deleteUserById(id);
  }

  @Override
  public void updateUser(Long id, String userName, String passWord) {
    userMapper.updateUser(id, userName, passWord);
  }
}

@RestController
@SpringBootApplication
@RequestMapping("/mybatis")
public class UserController {

  @Autowired
  private UserService userService;

  @RequestMapping("/getAllUser")
  public List<User> getAllUser() {
    List<User> list = userService.getAllUser();
    return list;
  }

  @RequestMapping("/saveUser")
  public void saveUser(User user) {
    userService.saveUser(user);
  }

  @RequestMapping("/deleteUserById")
  public void deleteUserById(Long id) {
    userService.deleteUserById(id);
  }

  @RequestMapping("/updateUser")
  public void updateUser(Long id, String userName, String passWord) {
    userService.updateUser(id, userName, passWord);
  }
}