1.新建maven项目

先新建一个maven项目，勾选上creat a simple project，填写groupid，artifactid

2.建立项目结构

3.添加依赖

<parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.3.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</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.3.2</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> </dependency></dependencies><build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins></build>

4.代码编写

在包的最外层添加启动类

package com.lee.test;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.cache.annotation.EnableCaching;@SpringBootApplication@EnableCachingpublic class Application { public static void main(String[] args) { SpringApplication.run(Application.class, args); }}

实体类

package com.lee.test.pojo;import org.springframework.stereotype.Component;@Componentpublic class User { private int id; private String name; private String telephone; public int getId() { return id; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getTelephone() { return telephone; } public void setTelephone(String telephone) { this.telephone = telephone; }}

mapper接口

package com.lee.test.mapper;import java.util.List;import org.apache.ibatis.annotations.Mapper;import com.lee.test.pojo.User;@Mapperpublic interface UserMapper { List<User> getUser(int id);}

service接口

package com.lee.test.service;import java.util.List;import com.lee.test.pojo.User;public interface UserService { public List<User> getUser(int id);}

service接口实现

package com.lee.test.service;import java.util.List;import com.lee.test.pojo.User;public interface UserService { public List<User> getUser(int id);}

controller层

package com.lee.test.controller;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.bind.annotation.RestController;import com.lee.test.pojo.User;import com.lee.test.service.UserService;@RestControllerpublic class UserController { @Autowired private UserService userService; @RequestMapping("/getUser") public List<User> getUser(@RequestParam("id") int id) { return userService.getUser(id); }}

还有mapper.xml的实现

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://.mysql.jdbc.Driverspring.datasource.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=UTF-8spring.datasource.username=rootspring.datasource.password=rootmybatis.mapper-locations: classpath:mapper/*.xml

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。