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学习spring-boot 的示例代码

一、工具:

idea 、tomcat、jdk1.8以上

二、操作步骤:

新建项目:New Project ——》 Spring Initializr (选择SDK)——》填写 项目基本信息 ——》选择Web——》下一步——》完成

新建一个控制器类:HelloController

编写代码如下:

 // package com.example.testdemo.controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class HelloController {

    @GetMapping("/hello")
    public String hello() {
        return "3333";
    }
}

启动Tomcat

运行DemoApplication

浏览器中输入:http://localhost:8080/hello

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