Spring Boot初级教程 ======================= ### 一. Spring Boot安装 环境要求：Java 8，Maven 3.2或Gradle 1.12 #### 1.Maven方式 
<?xml version="1.0" encoding="UTF-8"?>
<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.example</groupId>
    <artifactId>myproject</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <!-- Inherit defaults from Spring Boot -->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.2.1.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>
注：Spring Boot依赖的groupId是org.springframework.boot，一般Maven pom需要继承spring-boot-starter-parent，然后声明相应[Starter POMs](http://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#using-boot-starter-poms).如果不想继承spring-boot-starter-parent，可以使用import作用域。 #### 2.Gradle方式 build.gradle脚本： 
buildscript {
    repositories {
        jcenter()
        maven { url "http://repo.spring.io/snapshot" }
        maven { url "http://repo.spring.io/milestone" }
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:1.2.2.BUILD-SNAPSHOT")
    }
}

apply plugin: 'java'
apply plugin: 'spring-boot'

jar {
    baseName = 'myproject'
    version =  '0.0.1-SNAPSHOT'
}

repositories {
    jcenter()
    maven { url "http://repo.spring.io/snapshot" }
    maven { url "http://repo.spring.io/milestone" }
}

dependencies {
    compile("org.springframework.boot:spring-boot-starter-web")
    testCompile("org.springframework.boot:spring-boot-starter-test")
}
#### 3.安装Spring Boot命令行工具 
$ gvm install springboot
$ spring --version
$ gvm ls springboot
$ . ~/.gvm/springboot/current/shell-completion/bash/spring
$ spring 
  grab  help  jar  run  test  version
#### 4.Quick Start 创建app.groovy，代码如下： 
@RestController
class ThisWillActuallyRun {
    @RequestMapping("/")
    String home() {
        "Hello World!"
    }
}
运行： 
$ spring run app.groovy