SpringBoot初步

1.创建maven 项目 quickstart类型

2.pom.xml

<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>

3.application.properties

空

4.启动类

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);
    }
}

5.控制器

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();
    }
}

6.启动