前言

本文是“SpringBoot 1024行代码”系列的第一篇。本文介绍了如何用SpringBoot搭建一个简单的web应用。

准备工作

1 安装jdk1.8
2 安装maven
3 具备Spring和SpringMVC的基础知识

具体步骤

1. 在pom.xml中加入SpringBoot的引用

    <dependencies>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

2. 创建一个程序入口类

package com.example.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class DemoApplication {

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

3. 添加一个SpringMVC的controller

package com.example.demo.controller;

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

@RestController
public class DemoController {

    @RequestMapping("/hello")
    String home() {
        return "Hello World!\n";
    }
}

4. 验证程序

调用接口

curl 127.0.0.1:8080/hello

返回结果

Hello World!

源码

https://github.com/gzllol/spr…