springboot integrates mybatis
1, add pom reference
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 in resource Create the mybatis directory under the directory and create the mybatis-config.xml file
Create the mapper directory under the mybatis directory to store the mapper class interface file
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 class file
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 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:
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);
}
}
Finally, add the scanning maper interface annotation
@SpringBootApplication
@MapperScan("com.kerry.mapper")
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
or in each It is also possible to add the @mapper annotation to an XXMapper class. You can choose one of the two. It is not necessary to add the @mapper annotation every time you write a mapper class
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