初见SpringBoot
一、pom配置
<?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>org.example</groupId>
<artifactId>boot-01-helloworld</artifactId>
<version>1.0-SNAPSHOmjh T</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.3.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
</dependencies>
<!-- 打包工具使maven导出jar包-->
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
二、配置主程序类
package com.nanjing.boot;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.SpringApplication;
/**
* 主程序类
*@SpringBootApplication 这是一个springboot应用
*/
@SpringBootApplication
public class MainApplication {
public static void main(String[] args) {
SpringApplication.run(MainApplication.class,args);
}
}
三、配置Controller
package com.nanjing.boot.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
@ResponseBody
@Controller
public class HelloController {
@RequestMapping("/hello")
public String handle01(){
return "Hello , Spring Boot 2!";
}
}
四、初识application
#修改端口号
server.port=8888
注:另外由于pom中配置了jar文件,可以用maven直接导出整个项目并且在cmd中直接运行
可直接在这里通过cmd运行文件