Getting Started with RESTful WebService

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RESTful WebService is a lightweight Web service that is simpler than SOAP message-based webservice, and restful webservice is stateless, publishing and calling are very easy and easy.

Here is one of the simplest examples of Hello world to have a perceptual knowledge of restful webservice. Because a very professional and theoretical contempt for restful webservice is a painful thing to understand. Take a look at an example to understand.

/**
* Getting Started with RESTful WebService
* @author leizhimin 2009-11-18 16:42:43
*/
PackageExample

ImportCom.sun.jersey.api.container.httpserver.HttpServerFactory;
ImportCom.sun.net.httpserver.HttpServer;

ImportJavax.ws.rs.GET;
ImportJavax.ws.rs.Path;
ImportJavax.ws.rs.Produces;
ImportJava.io.IOException;

//Specify URI
@Path ("/helloworld")
Public classHelloWorld {
//Handling Get requests for HTTP
@GET
//The content format for processing request feedback is "Text/plain"
@Produces ("Text/plain")
PublicString Getclichedmessage () {
return "Hello world!";
}

Public Static voidMain (string[] args)throwsIOException {
//Create RESTful WebService service
Httpserver Server = Httpserverfactory.create ( "Http://192.168.14.117:9999/");
                //start the service, which causes a new thread to be opened
                 Server.start ();
                //Some tips for the output service to the console
                 System.out.println ( "RESTful WebService service has started" );
                System.out.println ( "service Access address: Http:// 192.168.14.117:9999/helloworld ");
       }
}

To run this class, console output:

2009-11-18 17:25:37 com.sun.jersey.api.core.ClasspathResourceConfig Init
Information: Scanning forRoot resource and provider classes in the paths:
D:\jdk16\jre\lib\alt-rt.jar
D:\jdk16\jre\lib\charsets.jar
D:\jdk16\jre\lib\deploy.jar
D:\jdk16\jre\lib\javaws.jar
D:\jdk16\jre\lib\jce.jar
D:\jdk16\jre\lib\jsse.jar
D:\jdk16\jre\lib\management-agent.jar
D:\jdk16\jre\lib\plugin.jar
D:\jdk16\jre\lib\resources.jar
D:\jdk16\jre\lib\rt.jar
D:\jdk16\jre\lib\ext\dnsns.jar
D:\jdk16\jre\lib\ext\localedata.jar
D:\jdk16\jre\lib\ext\sunjce_provider.jar
D:\jdk16\jre\lib\ext\sunmscapi.jar
D:\jdk16\jre\lib\ext\sunpkcs11.jar
D:\netwideo\restws\out\production\restws
D:\IDEA8\lib\javaee.jar
D:\netwideo\restws\lib\mail-1.4.jar
D:\netwideo\restws\lib\asm-3.1.jar
D:\netwideo\restws\lib\wadl2java.jar
D:\netwideo\restws\lib\jettison-1.0.1.jar
D:\netwideo\restws\lib\grizzly-servlet-webserver-1.8.6.4.jar
D:\netwideo\restws\lib\wadl-core.jar
D:\netwideo\restws\lib\localizer.jar
D:\netwideo\restws\lib\jdom-1.0.jar
D:\netwideo\restws\lib\jsr311-api-1.0.jar
D:\netwideo\restws\lib\stax-api-1.0-2.jar
D:\netwideo\restws\lib\persistence-api-1.0.2.jar
D:\netwideo\restws\lib\jaxb-api-2.1.jar
D:\netwideo\restws\lib\wadl-cmdline.jar
D:\netwideo\restws\lib\http-20070405.jar
D:\netwideo\restws\lib\rome-0.9.jar
D:\netwideo\restws\lib\activation-1.1.jar
D:\netwideo\restws\lib\jaxb-impl-2.1.10.jar
D:\netwideo\restws\lib\jersey-bundle-1.0.3.jar
D:\netwideo\restws\lib\jackson-lgpl-0.9.4.jar
D:\netwideo\restws\lib\FastInfoset-1.2.2.jar
D:\netwideo\restws\lib\jaxb-xjc.jar
D:\IDEA8\lib\idea_rt.jar
2009-11-18 17:25:46 com.sun.jersey.api.core.ClasspathResourceConfig Init
Info: Root Resource classes found:
classExample. HelloWorld
2009-11-18 17:25:46 com.sun.jersey.api.core.ClasspathResourceConfig Init
Information: Provider classes found:
RESTful WebService Service has been started
Service Access address: http://192.168.14.117:9999/helloworld

Service started successfully, down is to access the service from the browser, enter Http://192.168.14.117:9999/helloworld, will send an HTTP GET request to see the results:

All of the jar packages used:

Activation-1.1.jar
Asm-3.1.jar
Fastinfoset-1.2.2.jar
Grizzly-servlet-webserver-1.8.6.4.jar
Http-20070405.jar
Jackson-lgpl-0.9.4.jar
Jaxb-api-2.1.jar
Jaxb-impl-2.1.10.jar
Jaxb-xjc.jar
Jdom-1.0.jar
Jersey-bundle-1.0.3.jar
Jettison-1.0.1.jar
Jsr311-api-1.0.jar
Mail-1.4.jar
Localizer.jar
Persistence-api-1.0.2.jar
Rome-0.9.jar
Stax-api-1.0-2.jar
Wadl-core.jar
Wadl-cmdline.jar
Wadl2java.jar

This article is from the lava blog, so be sure to keep this source http://lavasoft.blog.51cto.com/62575/229206

RESTful WebService Introduction (GO)