SpringBoot整合Mybatis（一）

第一步、创建Maven工程，配置POM

<?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.kyy.springboot.mybatis</groupId> <artifactId>chapter_2</artifactId> <version>1.0-SNAPSHOT</version> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.1.3.RELEASE</version> </parent> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.3.2</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>

第二步、配置application.yml和application-dev.yml文件

spring: profiles: active: dev

server: port: 80 spring: datasource: url: jdbc:mysql://localhost:3306/db?useUnicode=true&characterEncoding=UTF-8&allowMultiQueries=true username: root password: 123456 driver-class-name: com.mysql.jdbc.Driver mybatis: mapper-locations: classpath:mapper/*Mapper.xml type-aliases-package: com.kyy.springboot.mybatis.entity logging: level: com: kyy: springboot: mybatis: mapper: debug 

第三步、创建entity、mapper、service、controller文件

package com.kyy.springboot.mybatis.entity; /** * Auth: zhouhongliang * Date：2019/8/4 */ public class AuthUser { private Long userSid; private String userCode; private String userName; public Long getUserSid() { return userSid; } public void setUserSid(Long userSid) { this.userSid = userSid; } public String getUserCode() { return userCode; } public void setUserCode(String userCode) { this.userCode = userCode; } public String getUserName() { return userName; } public void setUserName(String userName) { this.userName = userName; } } 

package com.kyy.springboot.mybatis.mapper; import com.kyy.springboot.mybatis.entity.AuthUser; import org.springframework.stereotype.Repository; /** * Auth: zhouhongliang * Date：2019/8/4 */ @Repository public interface AuthUserMapper { public AuthUser selectAuthUser(Long userSid); } 

package com.kyy.springboot.mybatis.service; import com.kyy.springboot.mybatis.entity.AuthUser; import com.kyy.springboot.mybatis.mapper.AuthUserMapper; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; /** * Auth: zhouhongliang * Date：2019/8/4 */ @Service public class AuthUserService { @Autowired private AuthUserMapper authUserMapper; public AuthUser getAuthUser(Long userSid){ return authUserMapper.selectAuthUser(userSid); } } 

package com.kyy.springboot.mybatis.controller; import com.kyy.springboot.mybatis.entity.AuthUser; import com.kyy.springboot.mybatis.service.AuthUserService; 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; /** * Auth: zhouhongliang * Date：2019/8/4 */ @RestController public class AuthUserController { @Autowired private AuthUserService authUserService; @RequestMapping("/findAuthUser/{userSid}") public AuthUser findAuthUser(@PathVariable Long userSid){ return authUserService.getAuthUser(userSid); } } 

<?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.kyy.springboot.mybatis.mapper.AuthUserMapper"> <resultMap id="BaseResultMap" type="com.kyy.springboot.mybatis.entity.AuthUser"> <id column="USER_SID" property="userSid" jdbcType="INTEGER"/> <result column="USER_CODE" property="userCode" jdbcType="VARCHAR"/> <result column="USER_NAME" property="userName" jdbcType="VARCHAR"/> </resultMap> <sql id="Base_Column_List"> USER_SID,USER_CODE,USER_NAME </sql> <select id="selectAuthUser" resultMap="BaseResultMap" parameterType="java.lang.Long"> SELECT <include refid="Base_Column_List"/> FROM auth_user WHERE USER_SID=#{userSid,jdbcType=INTEGER} </select> </mapper> 

第四步、创建启动类

package com.kyy.springboot.mybatis; import org.mybatis.spring.annotation.MapperScan; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; /** * Auth: zhouhongliang * Date：2019/8/4 */ @SpringBootApplication @MapperScan(basePackages = {"com.kyy.springboot.mybatis.mapper"}) public class ApplicationStart { public static void main(String[] args) { SpringApplication.run(ApplicationStart.class,args); } } 

第五步、启动项目，访问http://localhost/findAuthUser/1003

输出：{"userSid":1003,"userCode":"10000128","userName":"管理员"}