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Spring Boot实例Hello World Demo

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11/29
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Spring Boot要求Maven的版本达到3.2或以上。

实例：

POM： 

<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.jsoft.springboottest</groupId>

    <artifactId>springboottest1</artifactId>

    <version>0.0.1-SNAPSHOT</version>

    <packaging>jar</packaging>

    <name>springboottest1</name>

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

    <properties>

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

    </properties>

    <!-- Inherit defaults from Spring Boot -->

    <parent>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-parent</artifactId>

        <version>1.4.7.RELEASE</version>

    </parent>

    <dependencies>

        <dependency>

            <groupId>junit</groupId>

            <artifactId>junit</artifactId>

            <scope>test</scope>

        </dependency>

        <!-- Add typical dependencies for a web application -->

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-web</artifactId>

        </dependency>

    </dependencies>

    <!-- Package as an executable jar -->

    <build>

        <plugins>

            <plugin>

                <groupId>org.springframework.boot</groupId>

                <artifactId>spring-boot-maven-plugin</artifactId>

            </plugin>

        </plugins>

    </build>

</project>

TestController.java： 

package com.jsoft.springboottest.springboottest1.controller;

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

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

@RestController

public class TestController {

    @RequestMapping("/show")

    public String show(){

        return "Hello World";

    }

}

App.java： 

package com.jsoft.springboottest.springboottest1;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

/**

 * Hello world!

 *

 */

@SpringBootApplication

public class App

{

    public static void main( String[] args )

    {

        SpringApplication.run(App.class, args);

    }

}

运行： 

#第一种

mvn spring-boot:run

#第二种

mvn package打包之后，使用java -jar xxx.jar运行

#第三种

直接Eclipse的Run As指定到App的入口main方法即可。

访问：

测试工程：

https://github.com/easonjim/5_java_example/tree/master/springboottest/springboottest1

参考：

http://somefuture.iteye.com/blog/2247207

http://www.cnblogs.com/yangcb/p/5632051.html

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