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 getTestList(){ List list=springBootTestService.getTestList(); return list; }; } 七．Service
接口
public interface SpringBootTestService { public List getTestList(); }
实现类
import java.util.List;
@Service
public class SpringBootTestServiceImpl implements SpringBootTestService { @Autowired private SpringBootTestMapper springBootTestMapper; @Override public List getTestList() { List list=springBootTestMapper.getTestList(); return list; } } 八．Mapper
import java.util.List; @Mapper public interface SpringBootTestMapper { public List getTestList(); } 九．Mapper.xml