关于spring boot的问题

按照了spring boot官网上的helloworld例子，但是编译出现java.lang.NoClassDefFoundError: com/he/OfficialDemo，package com.he;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

/**

• �ٷ�����

• @author pzr
  *
  */
  @Controller
  @EnableAutoConfiguration
  public class OfficialDemo {
  @RequestMapping("/test")
  @ResponseBody
  String home() {
  System.out.println("OfficialDemo.home()");
  return "Hello World!";
  }

  public static void main(String[] args) throws Exception {
  SpringApplication.run(OfficialDemo.class, args);
  }
  }

我的代码`

http://blog.csdn.net/u012734441/article/details/51542747