Spring-boot 最小demo

POM 文件，注意红色部分：

<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>spring-boot-starter-data-mongodb</groupId>
    <artifactId>spring-boot-starter-data-mongodb</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.1.RELEASE</version>
    </parent>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>
    <build>　　　　 <!-- SpringBoot打包插件 ( 打包好的Jar可以直接用“java -jar YOUR_JAR.jar”命令启动 ) -->
        <sourceDirectory>src</sourceDirectory>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

程序入口：

package com.cui;

import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class Application implements CommandLineRunner {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

    @Override
    public void run(String... args) throws Exception {
        System.out.println("Spring加载完后执行的逻辑，可以直接使用Spring上下文，以及依赖注入@Autowired");
    }
}

最简单的Web应用 （然而这并不是重点，仅仅是POM中spring-boot-starter-web组建的简单示例， 更多组件参考 http://www.mvnrepository.com/search?q=spring-boot-starter- ）：

package com.cui;

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

@RestController
@RequestMapping("/user")
public class UserController {
    @RequestMapping("/{id}")
    public String view(@PathVariable("id") Long id) {
        return id + " ~~";
    }
}