spring boot hello world

本文讲解初始用户搭建spring boot 工程。

新建工程目录结构：

application.java放在最外层的包目录里

 

先添加pom.xml的依赖包：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>com.test.my</groupId>
  <artifactId>testApplication</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>testApplication</name>
  <url>http://maven.apache.org</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.9.RELEASE</version>
    </parent>
    
  <dependencies>
      <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
  </dependencies>
</project>

 

application.java内容：

package com.test.my.testApplication;

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

@SpringBootApplication
public class Application 
{

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

 

HelloController.java

package com.test.my.testApplication.controller;

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

@RestController
@RequestMapping("/api")
public class HelloController {

    
    @RequestMapping(value="/hello",method=RequestMethod.GET)
    public String hello() {
        return "hello world";
    }
}

application.properties：

只需添加工程对应的端口号

server.port=8080

 

浏览器访问：http://localhost:8080/api/hello