Restlet API（http://restlet.com/）是直接按照 REST 的概念设计的，资源、表示、连接器、组件和媒体类型。

使用该框架可自然地实现 REST API。尽管下面的例子不是纯 RESTful的，但依然展示了只需要很少的一点代码就能创建一个返回 JSON 的服务器。

代码举例:

package com.saternos.embedded;

import org.restlet.*;
import org.restlet.data.*;
import org.restlet.resource.*;

public class TestRestletHttpServer extends ServerResource {

	public static void main(String[] args) throws Exception {
		Component component = new Component();
		component.getServers().add(Protocol.HTTP, Integer.parseInt("8000"));
		component.getDefaultHost().attach("/", TestRestletHttpServer.class);
		component.start();
	}

	@Get("json")
	public String getGreeting() {
		return "{\"testResponse\":\"Hello World\"}";
	}

}

POM文件:

<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>org.myself</groupId>
	<artifactId>temp-demo</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>

	<name>temp-demo</name>
	<url>http://maven.apache.org</url>

	<properties>
		<maven.compiler.target>1.8</maven.compiler.target>
		<maven.compiler.source>1.8</maven.compiler.source>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
	</properties>

	<dependencies>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>3.8.1</version>
			<scope>test</scope>
		</dependency>
		<!-- https://mvnrepository.com/artifact/org.restlet.jse/org.restlet -->
		<dependency>
			<groupId>org.restlet.jse</groupId>
			<artifactId>org.restlet</artifactId>
			<version>2.0.0</version>
		</dependency>
		<!-- https://mvnrepository.com/artifact/org.restlet.jse/org.restlet.ext.json -->
		<dependency>
			<groupId>org.restlet.jse</groupId>
			<artifactId>org.restlet.ext.json</artifactId>
			<version>2.0.0</version>
		</dependency>

	</dependencies>
</project>