怎么在springboot中集成mybatis xml方式

springboot集成mybatis

1，添加pom引用

 
  org.mybatis.spring.boot
  mybatis-spring-boot-starter
  1.1.1
 
   
     mysql
     mysql-connector-java
   

2 application.properties

mybatis.config-locations=classpath:mybatis/mybatis-config.xml
mybatis.mapper-locations=classpath:mybatis/mapper/*.xml
mybatis.type-aliases-package=com.kerry.model
 
spring.datasource.driverClassName = com.mysql.jdbc.Driver
spring.datasource.url = jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8
spring.datasource.username = root
spring.datasource.password = 123456

3 在resource目录下创建mybatis目录并创建mybatis-config.xml文件

mybatis目录下创建mapper目录存放mapper类接口文件

package com.kerry.mapper; 
import java.util.List; 
import com.kerry.model.User; 
public interface UserMapper { 
 List getAll(); 
 User getOne(Integer id); 
 void insert(User user); 
 void update(User user); 
 void delete(Integer id);
 }

model类文件

package com.kerry.mapper; 
import java.util.List;
import com.kerry.model.User; 
public interface UserMapper { 
 List getAll(); 
 User getOne(Integer id); 
 void insert(User user); 
 void update(User user); 
 void delete(Integer id);
}

userMapper.xml

  
    
    
    
    
  
  
  
    id, name, age, address
  
 
  
    SELECT 
    
  FROM user
  
 
  
    SELECT 
    
  FROM user
  WHERE id = #{id}
  
 
  
    INSERT INTO 
     user
     (id,name,age,address) 
    VALUES
     (#{id},#{name}, #{age}, #{address})
  
  
  
    UPDATE 
     user 
    SET 
    name = #{name},
    age = #{age},
    address = #{address}
    WHERE 
     id = #{id}
  
  
  
    DELETE FROM
     user 
    WHERE 
     id =#{id}
   

controller：

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package com.kerry.web;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController; 
import com.kerry.model.User;
import com.kerry.mapper.UserMapper; 
@RestController
public class UserController { 
 @Autowired
 private UserMapper userMapper;
 
 @RequestMapping("/getUsers")
 public List getUsers() {
 List users=userMapper.getAll();
 return users;
 }
 
  @RequestMapping("/getUser")
  public User getUser(Integer id) {
   User user=userMapper.getOne(id);
    return user;
  }
  
  @RequestMapping("/add")
  public void save(User user) {
   userMapper.insert(user);
  }
  
  @RequestMapping(value="update")
  public void update(User user) {
   userMapper.update(user);
  }
  
  @RequestMapping(value="/delete/{id}")
  public void delete(@PathVariable("id") Integer id) {
   userMapper.delete(id);
  }  
}

最后在启动类上加上 扫描maper interface注解

@SpringBootApplication
@MapperScan("com.kerry.mapper")
public class Application {
 
 public static void main(String[] args) {
 SpringApplication.run(Application.class, args);
 }
}

或者在每个XXMapper类上加上@mapper注解也行  二选一即可

比如

package com.kerry.mapper; 
import java.util.List;
import org.apache.ibatis.annotations.Mapper;
import com.kerry.model.User;
 @Mapper
public interface UserMapper { 
 List getAll(); 
 User getOne(Integer id); 
 void insert(User user); 
 void update(User user); 
 void delete(Integer id); 
}

个人建议使用直接在启动类上application上@MapperScan方便，一次搞定，不必每写一个mapper类都加上@mapper注解

附上项目结构目录 选中的类以及文件