restlet getting start 1

 本文的目的在于完成一个Restlet入门示例。 
首先，是一个Stand alone应用。 
然后，将其部署与Tomcat容器中。 
最后，完成Restlet与Spring的整合。 
 基本JAR 包:

 

1.按照官方教程，完成“firstSteps” 

创建一个动态Web工程RestEE，并建立firstSteps包，并复制如下代码到：HelloWorldResource.java 

 package firstSteps;

 import org.restlet.Context;
 import org.restlet.Request;
 import org.restlet.Response;
 import org.restlet.resource.Get;
 import org.restlet.resource.ServerResource;

 /**
  * Resource which has only one representation.
  */
 public class HelloWorldResource extends ServerResource {

     @Get
     public String represent() {
         return "hello, world";
     }

 }

2.复制如下代码到FirstStepsApplication.java  

 package firstSteps;

 import org.restlet.Application;
 import org.restlet.Restlet;
 import org.restlet.routing.Router;

 public class FirstStepsApplication extends Application {

     /**
      * Creates a root Restlet that will receive all incoming calls.
      */
     @Override
     public synchronized Restlet createInboundRoot() {
         // Create a router Restlet that routes each call to a new instance of HelloWorldResource.
         Router router = new Router(getContext());

         // Defines only one route
         router.attach("/hello", HelloWorldResource.class);

         return router;
     }

 }

3.编写main，复制如下代码到：FirstStepsMain.java  

 package firstSteps;

 import org.restlet.Component;
 import org.restlet.data.Protocol;

 public class FirtstStepsMain {
     public static void main(String[] args) throws Exception {
         // Create a new Component.
         Component component = new Component();

         // Add a new HTTP server listening on port 8182.
         component.getServers().add(Protocol.HTTP, 8182);

         // Attach the sample application.
         component.getDefaultHost().attach("/firstSteps",
                 new FirstStepsApplication());

         // Start the component.
         component.start();
     }
 }

4.以Java Application运行FirstStepsMain，在浏览器中输入：  
http://localhost:8182/hello，将打印“hello, world”信息。  

5.修改web.xml，具体代码如下：  

 <?xml version="1.0" encoding="UTF-8"?>
 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">

    <display-name>firstSteps</display-name>
    <context-param>
       <param-name>org.restlet.application</param-name>
       <param-value>
          firstSteps.FirstStepsApplication
       </param-value>
    </context-param>
    <!-- Restlet adapter -->
    <servlet>
       <servlet-name>RestletServlet</servlet-name>
       <servlet-class>org.restlet.ext.servlet.ServerServlet</servlet-class>


    </servlet>

    <!-- Catch all requests -->
    <servlet-mapping>
       <servlet-name>RestletServlet</servlet-name>
       <url-pattern>/*</url-pattern>
    </servlet-mapping>
 </web-app>

6.启动Tomcat，运行该项目。在浏览器中输入：  
http://localhost:8080/RestEE/hello，出现“hello, world”信息。  

7.集成restlet，spring  
7.1 修改web.xml，内容如下：  

 <?xml version="1.0" encoding="UTF-8"?>
 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">

    <display-name>firststepsservlet</display-name>

    <context-param>
       <param-name>contextConfigLocation</param-name>
       <param-value>/WEB-INF/applicationContext.xml</param-value>
    </context-param>

    <listener>
       <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <!-- Restlet adapter -->
     <servlet>
         <servlet-name>RestletServlet</servlet-name>
         <servlet-class>org.restlet.ext.spring.SpringServerServlet</servlet-class>
         <init-param>
             <param-name>org.restlet.component</param-name>
             <param-value>component</param-value>
         </init-param>
     </servlet>

    <!-- Catch all requests -->
    <servlet-mapping>
       <servlet-name>RestletServlet</servlet-name>
       <url-pattern>/*</url-pattern>
    </servlet-mapping>
 </web-app>

7.2 application.xml内容如下：  

 <?xml version="1.0" encoding="UTF-8"?>
 <beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">

     <bean id="component" class="org.restlet.ext.spring.SpringComponent">
         <property name="defaultTarget" ref="application" />
     </bean>
     <bean id="application" class="firstSteps.FirstStepsApplication">
         <lookup-method name="createRoot" bean="root" />
     </bean>
     <bean id="root" class="org.restlet.ext.spring.SpringRouter">
         <property name="attachments">
             <map>
                 <entry key="/hello">
                     <bean class="org.restlet.ext.spring.SpringFinder">
                         <lookup-method name="create" bean="HelloWorldResource" />
                     </bean>
                 </entry>
             </map>
         </property>
     </bean>
     <bean id="HelloWorldResource" class="firstSteps.HelloWorldResource" scope="prototype" />
 </beans>

7.3 启动Tomcat，运行该项目。浏览器中输入：  

http://localhost:8080/RestEE/hello，出现“hello,world”信息。

其他资料 ：

http://ajaxcn.iteye.com/category/64734?page=2

http://restlet.org/learn/tutorial/2.1/#/docs_2.0/2-restlet.html