<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</groupId>

    <artifactId>springboot</artifactId>

    <version>0.0.1-SNAPSHOT</version>

    <packaging>jar</packaging>

    <name>springboot</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>0.5.0.BUILD-SNAPSHOT</version>

    </parent>

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

    <dependencies>

        <dependency>

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

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

    <!--         <exclusions>

                <exclusion>

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

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

                </exclusion>

            </exclusions> -->

        </dependency>

    <!--     <dependency>

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

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

    <!-- Allow access to Spring milestones and snapshots -->

    <!-- (you don't need this if you are using anything after 0.5.0.RELEASE) -->

    <repositories>

        <repository>

            <id>spring-snapshots</id>

            <url>http://repo.spring.io/snapshot</url>

            <snapshots>

                <enabled>true</enabled>

            </snapshots>

        </repository>

        <repository>

            <id>spring-milestones</id>

            <url>http://repo.spring.io/milestone</url>

            <snapshots>

                <enabled>true</enabled>

            </snapshots>

        </repository>

    </repositories>

    <pluginRepositories>

        <pluginRepository>

            <id>spring-snapshots</id>

            <url>http://repo.spring.io/snapshot</url>

        </pluginRepository>

        <pluginRepository>

            <id>spring-milestones</id>

            <url>http://repo.spring.io/milestone</url>

        </pluginRepository>

    </pluginRepositories>

</project>

package com.test.springboot;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.EnableAutoConfiguration;

import org.springframework.boot.context.properties.EnableConfigurationProperties;

import org.springframework.boot.test.SpringApplicationConfiguration;

/**

 * Hello world!

 *

 */

@SpringApplicationConfiguration

@EnableConfigurationProperties({UserController.class})

@EnableAutoConfiguration

public class App

{

    public static void main( String[] args )

    {

        SpringApplication.run(App.class, args);

    }

}

package com.test.springboot;

import java.util.Properties;

import java.util.Set;

import org.springframework.beans.factory.annotation.Value;

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

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

@RestController

public class UserController {

    @Value("${com.dudu.name}")

    private String name;

    @Value("${com.dudu.want}")

    private String want;

    @RequestMapping("/")

    public String hexo(){

        Properties props = System.getProperties();

        Set<Object> set = props.keySet();

        StringBuilder strb = new StringBuilder();

        for(Object obj:set){

            strb.append(obj+":\t"+props.get(obj)+"<br/>");

        }

        return strb.toString();

    }

}