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1.官网下载Spring Boot项目 2.更新maven，下载必须的依赖问题：发现pom报错，parent那里有问题。解决：关掉代理，maven重新update，正常下载jar。 3.java run启动DemoApplication报错

@SpringBootApplicationpublic class DemoApplication {		public static void main(String[] args) {		SpringApplication.run(DemoApplication.class, args);	}}复制代码

报错：

Whitelabel Error PageThis application has no explicit mapping for /error, so you are seeing this as a fallback.Wed Feb 27 17:56:02 CST 2019There was an unexpected error (type=Not Found, status=404).No message available复制代码

解决：

添加依赖如下


    
     org.springframework.boot
           
    
     spring-boot-starter-web
    		复制代码

第一种：新建controller

package com.example.demo;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.ResponseBody;import org.springframework.web.bind.annotation.RestController;@RestControllerpublic class TestController {	@RequestMapping("getName/{name}")	@ResponseBody	public String getName(@PathVariable String name){		if(name==null){			name="null";		}		return "hello miky"+name;	}}复制代码

浏览器输入：显示如下：

hello mikyhaha

第二种：添加资源，如html页面。在resources下新建static包，然后浏览器输入地址：

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