详解springboot集成mybatis xml方式

详解springboot集成mybatis xml方式

springboot集成mybatis

关键代码如下：

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

<typeAlias alias="ArrayList" type="java.util.ArrayList" />

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})

http://

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);

}

}

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

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