spring-boot 初试

以前用得多是spring framework，现在试用spring-boot，hello world过程如下（只是简单的helloworld，实用见后续文章）：

1）准备eclipse，JDK（我的版本是1.7），maven 3（端口版本：http://tomcat.apache.org/whichversion.html）

2）window中的Java设置，即JAVA_HOME / PATH / CLASSPATH；window中的maven设置，即M2_HOME / MAVEN_HOME / PATH

3）eclipse中的maven设置，即eclipse > Preferences > Maven > Installations 及 User Settings

4）eclipse > new > maven > maven project，maven-archetype-quickstart, Group Id: User, Artifact Id: login, Package: com.company.controller

5）maven的setting.xml

<?xml version="1.0" encoding="UTF-8"?>
<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd"> <localRepository>E:/repository</localRepository>
<profiles>
<profile>
<repositories>
<repository>
<id>central</id>
<name>Maven Repository Switchboard</name>
<layout>default</layout>
<url>http://repo1.maven.org/maven2</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
</profile>
</profiles>
</settings>

6）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>User</groupId>
<artifactId>login</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>

<name>login</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>1.2.5.RELEASE</version>
</parent>

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

7）HelloWorld.java

package com.company.controller;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
@EnableAutoConfiguration
public class HelloWorld {
@RequestMapping("/sayHello")
@ResponseBody
public String sayHello(){
return "Hello World";
}
public static void main(String[] args) {
SpringApplication.run(HelloWorld.class, args);
}
}

8）pom.xml > run as > run configuration > maven build > name: (any), goals: spring-boot:run，勾skip tests，如果想改默认port端口8080，可以在VM arguments设置：-Dserver.port=8181，如图：





9）运行：pom.xml > run as > maven build

10）试验：http://localhost:8181/sayHello



结论：

a）maven会引入spring-boot的包，不用另外下载引入

b）spring-boot调用启动内嵌tomcat 7.0（见maven dependencies）



参考：
http://spring.io/blog/2014/03/07/deploying-spring-boot-applications https://dzone.com/articles/spring-boot-support-spring http://jinnianshilongnian.iteye.com/blog/1997192 http://www.infoq.com/cn/news/2014/01/spring-boot http://docs.spring.io/spring-boot/docs/1.2.0.BUILD-SNAPSHOT/maven-plugin/examples/run-debug.html