SpringBoot整合Mybatis的知识点汇总

<!--mybatis起步依赖-->
    <dependency>
      <groupId>org.mybatis.spring.boot</groupId>
      <artifactId>mybatis-spring-boot-starter</artifactId>
      <version>1.1.1</version>
    </dependency>

<!-- MySQL连接驱动 -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
    </dependency>

# 数据库连接信息
spring.datasource.driverClassName=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=utf8
spring.datasource.username=root
spring.datasource.password=root

-- ----------------------------
-- Table structure for `user`
-- ----------------------------
DROP TABLE IF EXISTS `user`;
CREATE TABLE `user` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`username` varchar(50) DEFAULT NULL,
`password` varchar(50) DEFAULT NULL,
`name` varchar(50) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=10 DEFAULT CHARSET=utf8;
-- ----------------------------
-- Records of user
-- ----------------------------
INSERT INTO `user` VALUES ('1', 'zhangsan', '123', '张三');
INSERT INTO `user` VALUES ('2', 'lisi', '123', '李四');

public class User {
  // 主键
  private Long id;
  // 用户名
  private String username;
  // 密码
  private String password;
  // 姓名
  private String name;
  
  //此处省略getter和setter方法 .. ..
}

@Mapper
public interface UserMapper {
  public List<User> queryUserList();
}

<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.fgy.mapper.UserMapper">
  <select id="queryUserList" resultType="user">
    select * from user
  </select>
</mapper>

#spring集成Mybatis环境
#pojo别名扫描包
mybatis.type-aliases-package=com.fgy.domain
#加载Mybatis映射文件
mybatis.mapper-locations=classpath:mapper/*Mapper.xml

@Controller
public class MapperController {
  @Autowired
  private UserMapper userMapper;

  @RequestMapping("/queryUser")
  @ResponseBody
  public List<User> queryUser(){
    List<User> users = userMapper.queryUserList();
    return users;
  }
}