在搭建简单的spring boot demo时使用SpringApplication来启动项目时报错：

org.springframework.context.ApplicationContextException: Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFactory bean.

原代码：

package com.boot.web;

import org.springframework.boot.SpringApplication;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class SpringBootDemoController {
	@RequestMapping
	public String helloWorld() {
		return "hello world!";
	}
	public static void main(String[] args) {
		SpringApplication.run(SpringBootDemoController.class, args);
	}
}

解决办法：加上@EnableAutoConfiguration注解，最好使用 jdk1.8

package com.boot.web;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@EnableAutoConfiguration
@RestController
public class SpringBootDemoController {
	@RequestMapping
	public String helloWorld() {
		return "hello world!";
	}
	public static void main(String[] args) {
		SpringApplication.run(SpringBootDemoController.class, args);
	}
}

修改后运行：

@EnableAutoConfiguration作用参考以下文章：

http://blog.csdn.net/kmhysoft/article/details/71056027