JAVA Thread.sleep模拟网络延时

前台页面访问，延时10秒后显示

package com.chenxb.mySpringboot.controller;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class HelloController {
    @RequestMapping("/hello")
    public String hello() {
        //模拟网络延时
        try {
            Thread.sleep(10000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "hello";
    }
}