这里利用SpringBoot整合了Mybatis，本实例主要使用annotation注解方式，xml方式请参照[post cid="114" /]，本实例Github地址05-mybatis-annotation，废话不多说，接下来开始整合：
完整pom文件
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.perfree</groupId>
<artifactId>mybatis-annotation</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>mybatis-annotation</name>
<description>SpringBoot-Mybatis-Annotation-Demo</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.5.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- SpringBoot 整合Mybatis依赖包 -->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.2</version>
</dependency>
<!-- Mysql 驱动包 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.39</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
关键依赖
<!-- SpringBoot 整合Mybatis依赖包 -->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.2</version>
</dependency>
<!-- Mysql 驱动包 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.39</version>
</dependency>
CREATE TABLE `user` (
`id` int(11) NOT NULL AUTO_INCREMENT COMMENT '主键',
`name` varchar(50) DEFAULT NULL COMMENT '姓名',
`age` int(11) DEFAULT NULL COMMENT '年龄',
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;
-- ----------------------------
-- Records of user
-- ----------------------------
INSERT INTO `user` VALUES ('1', '张三', '21');
INSERT INTO `user` VALUES ('2', '李四', '23');
INSERT INTO `user` VALUES ('3', '王二', '22');
package com.perfree.mybatisannotation.pojo;
/**
* @ClassName User
* @Description TODO(User实体类)
* @Author Perfree
* @Date 2018/10/3 7:13
* @Version 1.0
*/
public class User {
private Integer id;
private String name;
private Integer age;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
}
package com.perfree.mybatisannotation.controller;
import com.perfree.mybatisannotation.pojo.User;
import com.perfree.mybatisannotation.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* @ClassName UserController
* @Description TODO(userController)
* @Author Perfree
* @Date 2018/10/3 8:41
* @Version 1.0
*/
@RestController
public class UserController {
@Autowired
private UserService userService;
@RequestMapping("/getUser")
public String getUserById(){
User user = userService.getUserById(2);
return user.getName();
}
}
package com.perfree.mybatisannotation.service;
import com.perfree.mybatisannotation.pojo.User;
/**
* @ClassName UserService
* @Description TODO(user Service接口)
* @Author Perfree
* @Date 2018/10/3 8:42
* @Version 1.0
*/
public interface UserService {
User getUserById(int id);
}
package com.perfree.mybatisannotation.service.impl;
import com.perfree.mybatisannotation.mapper.UserMapper;
import com.perfree.mybatisannotation.pojo.User;
import com.perfree.mybatisannotation.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
/**
* @ClassName UserServiceImpl
* @Description TODO(user Service 实现)
* @Author Perfree
* @Date 2018/10/3 8:43
* @Version 1.0
*/
@Service
public class UserServiceImpl implements UserService {
@Autowired
private UserMapper userMapper;
@Override
public User getUserById(int id) {
User user = userMapper.getUserById(id);
return user;
}
}
package com.perfree.mybatisannotation.mapper;
import com.perfree.mybatisannotation.pojo.User;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;
@Mapper
public interface UserMapper {
@Select("select id,name,age from user where id=#{id}")
User getUserById(int id);
}
## 数据源配置
spring.datasource.url=jdbc:mysql://localhost:3306/springboot?characterEncoding=utf8
spring.datasource.username=root
spring.datasource.password=215521
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
package com.perfree.mybatisannotation;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@MapperScan("com.perfree.mybatisannotation.mapper.UserMapper")
@SpringBootApplication
public class MybatisAnnotationApplication {
public static void main(String[] args) {
SpringApplication.run(MybatisAnnotationApplication.class, args);
}
}
简单的整合完毕，更多mybatis注解可以看org.apache.ibatis.annotations 包提供的，如图：
