根据这个类生成mybatis的全套方法
时间: 2024-05-15 08:16:37 浏览: 72
由于没有给出具体的类,以下是一个示例类的mybatis全套方法:
```
public class User {
private Long id;
private String name;
private Integer age;
private String email;
// getters and setters
}
```
1. 在mapper.xml文件中定义SQL语句
```
<!-- 查询所有用户 -->
<select id="findAll" resultType="User">
SELECT * FROM user
</select>
<!-- 根据用户id查询用户 -->
<select id="findById" parameterType="Long" resultType="User">
SELECT * FROM user WHERE id = #{id}
</select>
<!-- 添加用户 -->
<insert id="addUser" parameterType="User">
INSERT INTO user(name, age, email) VALUES(#{name}, #{age}, #{email})
</insert>
<!-- 更新用户信息 -->
<update id="updateUser" parameterType="User">
UPDATE user SET name=#{name}, age=#{age}, email=#{email} WHERE id=#{id}
</update>
<!-- 根据用户id删除用户 -->
<delete id="deleteById" parameterType="Long">
DELETE FROM user WHERE id=#{id}
</delete>
```
2. 在接口中定义方法
```
public interface UserMapper {
// 查询所有用户
List<User> findAll();
// 根据用户id查询用户
User findById(Long id);
// 添加用户
void addUser(User user);
// 更新用户信息
void updateUser(User user);
// 根据用户id删除用户
void deleteById(Long id);
}
```
3. 在Spring配置文件中配置MapperScannerConfigurer
```
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.example.mapper" />
</bean>
```
4. 在Service中调用Mapper方法
```
@Service
public class UserServiceImpl implements UserService {
@Autowired
private UserMapper userMapper;
@Override
public List<User> findAll() {
return userMapper.findAll();
}
@Override
public User findById(Long id) {
return userMapper.findById(id);
}
@Override
public void addUser(User user) {
userMapper.addUser(user);
}
@Override
public void updateUser(User user) {
userMapper.updateUser(user);
}
@Override
public void deleteById(Long id) {
userMapper.deleteById(id);
}
}
```
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