Spring Boot Tutorial

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Spring Boot

目录：

1. 简单的REST API Server代码

SampleController.java

package cn.gridx.springboot.web;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.*;
import java.util.concurrent.atomic.AtomicLong;
@SpringBootApplication
@RestController
public class SampleController {
    Logger logger = LoggerFactory.getLogger(this.getClass());
    private static final String template = "Hello, %s!";
    private final AtomicLong counter = new AtomicLong();
    @RequestMapping(method = RequestMethod.GET, path = "/home")
    public String home() throws InterruptedException {
        logger.info("[home] 收到请求");
        Thread.sleep(10*1000);
        logger.info("[home] 返回响应");
        return "Hello World!";
    }
    @RequestMapping(method = RequestMethod.GET, path = "/greeting")
    public Greeting greeting(@RequestParam(value="name", defaultValue="World") String name) 
      throws InterruptedException {
        logger.info("[greeting] 收到请求");
        Thread.sleep(10*1000);
        logger.info("[greeting] 返回响应");
        return new Greeting(counter.incrementAndGet(),
                String.format(template, name));
    }
    public static void main(String[] args) throws Exception {
        SpringApplication.run(SampleController.class, args);
    }
}

Greeting.java

package cn.gridx.springboot.web;
public class Greeting {
    private final long id;
    private final String content;
    public Greeting(long id, String content) {
        this.id = id;
        this.content = content;
    }
    public long getId() {
        return id;
    }
    public String getContent() {
        return content;
    }
}

build.gradle

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:1.4.2.RELEASE")
    }
}
apply plugin: 'java'
apply plugin: 'org.springframework.boot'
repositories {
    mavenCentral()
}
dependencies {
    testCompile group: 'junit', name: 'junit', version: '4.11'
    compile "org.springframework.boot:spring-boot-starter-web",
            'ch.qos.logback:logback-core:1.1.3'
}
jar {
    baseName = 'spring-boot-app-web'
    version =  '0.1.0'
    from configurations.compile.collect {
        it.isDirectory() ? it : zipTree(it)
    }
    exclude('org/slf4j/**')
}

2. 在IDEA运行

在IDEA中可以直接运行SampleController这个类。

3. 打包直接运行

可以打成一个JAR包，直接运行，而不需要为的web容器。


打包：

$ ./gradlew clean build

运行：

$ java -jar build/libs/spring-boot-app-web-0.1.0.jar