一.idea创建一个springBoot项目
二.创建的目录结构
三.Pom.xml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>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.5.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>springbootdemo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>springbootdemo</name>
<description>Demo project for Spring
Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jersey</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!--添加mybatis依赖-->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.4</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.6</version>
</dependency>
<!--添加mysql依赖-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.15</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>5.1.3.RELEASE</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
四.application.properties文件#修改tomcat端口号
server.port=8088 #配制mysql数据库映射 spring.datasource.url=jdbc:mysql://127.0.0.1:3306/yz?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone = GMT spring.datasource.username=root spring.datasource.password=yzltz_0324 spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver #配制mapper映射文件 mybatis.mapper-locations=classpath:/mappers/*.xml
五.SpringbootdemoApplication.java启动文件package com.example.springbootdemo;import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.web.servlet.support.SpringBootServletInitializer; @SpringBootApplication @MapperScan(basePackages = "com.example.springbootdemo.mapper.SpringBootTestMapper") public class SpringbootdemoApplication extends SpringBootServletInitializer { public static void main(String[] args) { SpringApplication.run(SpringbootdemoApplication.class, args); } }
六.Controllerimport java.util.List;
@RestController public class SpringBootTest { @RequestMapping("/home") public String home() { return "Hello Spring Boot!"; } @Autowired private SpringBootTestService springBootTestService; @RequestMapping("/testList") public List<SpringBootTestPojo> getTestList(){ List<SpringBootTestPojo> list=springBootTestService.getTestList(); return list; }; }
七.Service
接口
public interface SpringBootTestService { public List<SpringBootTestPojo> getTestList(); }
实现类
import java.util.List;
@Service
public class SpringBootTestServiceImpl implements SpringBootTestService { @Autowired private SpringBootTestMapper springBootTestMapper; @Override public List<SpringBootTestPojo> getTestList() { List<SpringBootTestPojo> list=springBootTestMapper.getTestList(); return list; } }
八.Mapper
import java.util.List; @Mapper public interface SpringBootTestMapper { public List<SpringBootTestPojo> getTestList(); }
九.Mapper.xml
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPEmapperPUBLIC"-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" > <mapper namespace="com.example.springbootdemo.mapper.SpringBootTestMapper"> <select id="getTestList" resultType="com.example.springbootdemo.pojo.SpringBootTestPojo"> SELECT * FROM `tb_springboot` </select> </mapper>
原文地址:https://www.cnblogs.com/txf0324/p/11127238.html