SpringBoot+Mybatis框架搭建实现接口编写

1.配置文件

# 服务
server.port=8080
spring.datasource.url=jdbc:mysql://localhost:3306/springbootdatabase
spring.datasource.username=***
spring.datasource.password=***
spring.datasource.driver-class-name=com.mysql.jdbc.Driver

spring.datasource.max-idle=10
spring.datasource.max-wait=10000
spring.datasource.min-idle=5
spring.datasource.initial-size=5

# 搜索指定包别名
mybatis.typeAliasesPackage: com.example.springboot_and_mybatis.*.mapper
# 配置mapper的扫描，找到所有的mapper.xml映射文件
mybatis.mapperLocations: classpath*:mapper/**/*Mapper.xml
# 加载全局的配置文件
mybatis.configLocation: classpath:mapper/mybatis-config.xml

2.创建：控制层，服务层，实现层，接口层，实体类。

控制层：UserController.class

/**
 * 接口控制类
 */
@RestController
@RequestMapping("/requestUser")
public class UserController {
    @Autowired
    private UserService userService;

    /**
     * 用户注册
     */
    @RequestMapping(value = "rEgister.do", method = RequestMethod.POST)
    public Map<String, Object> rEgister(String openid, String name, String phone, String password, String code) throws Exception {
        return userService.rEgister(openid, name, phone, password, code);
    }

}

服务层：UserService.class

/**
 * 接口服务类
 */

public interface UserService {
    /**
     * 用户注册
     */
    Map<String, Object> rEgister(String openid, String name, String phone, String password, String code) throws Exception;
}

接口层：UserMapper.class

public interface UserMapper {
    int selectCount(@Param(value = "openid") String openid) throws Exception;
    /**
     * 用户注册
     */
    void rEgister(@Param(value = "openid") String openid, @Param(value = "name") String name,
                                       @Param(value = "phone") String phone,
                                       @Param(value = "password") String password, @Param(value = "code") String code);
}

与接口层对应名字的布局：UserMapper.xml

<?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.example.spingboot_and_mybatis.user.mapper.UserMapper">
    <resultMap id="BaseResultMap" type="com.example.spingboot_and_mybatis.user.entity.user">
<!--        <id column="OPENID" property="openid" jdbcType="VARCHAR"/>-->
<!--        <result column="NAME" property="name" jdbcType="VARCHAR"/>-->
<!--        <result column="PHONE" property="phone" jdbcType="VARCHAR"/>-->
<!--        <result column="PASSWORD" property="password" jdbcType="VARCHAR"/>-->
<!--        <result column="CODE" property="code" jdbcType="VARCHAR"/>-->
    </resultMap>
    <!-- 基础方法 结束 -->
    <!-- 扩展方法 开始 -->
    <insert id="rEgister" parameterType="com.example.spingboot_and_mybatis.user.entity.user">
    INSERT INTO USER (openid,name,phone,password,code) values(#{openid},#{name},#{phone},#{password},#{code})
    </insert>
    <select id="selectCount" parameterType="String" resultType="int">
   SELECT
      COUNT(1)
   FROM
      USER
   WHERE
      OPENID = #{openid}
</select>
    <!-- 扩展方法 结束 -->
</mapper>

实现层：UserServiceImpl.class

/**
 * 接口实现类
 */
@Service
public class UserServiceImpl implements UserService {

    @Autowired
    private UserMapper userMapper;

    @Override
    public Map<String, Object> rEgister(String openid, String name, String phone, String password, String code) throws Exception {
        if (userMapper.selectCount(openid) > 0) {
            return Message.getMessage("10", "该微信号已经注册");
        }
        user u = new user();
        u.setOpenid(openid);
        u.setName(name);
        u.setPhone(phone);
        u.setPassword(password);
        u.setCode(code);


        userMapper.rEgister(openid, name, phone, password, code);
        return Message.getMessage("0", "注册成功");
    }
}

运行层：

@SpringBootApplication
@MapperScan(basePackages = {"com.example.spingboot_and_mybatis.*.mapper"})
public class SpingbootAndMybatisApplication {
    public static void main(String[] args) {
        SpringApplication.run(SpingbootAndMybatisApplication.class, args);
        System.out.println("启动成功!");
    }

}

                                                                         注释：记录搭建过程并不全面