如何使用Restlet apis for Java EE从ServerResource发送HTTP Get请求？

Question

我是Restlet apis的新手。到目前为止，我已经成功地从Android设备向tomcat服务器发送HTTP Post请求，并将响应从服务器发送到设备。现在，我正在尝试从Tomcat服务器向另一个HTTP服务器发送HTTP GET请求。这是我在CustomServerResource类中的代码：

ClientResource clientResource = new ClientResource(httpGetUrl);
Representation representation = clientResource.get();

我在控制台中收到以下错误：

Dec 6, 2012 7:31:09 PM org.restlet.engine.component.ClientRouter getNext
WARNING: The protocol used by this request is not declared in the list of client     connectors. (HTTP/1.1)
Not Found (404) - The server has not found anything matching the request URI
at org.restlet.resource.ClientResource.handle(ClientResource.java:870)
at org.restlet.resource.ClientResource.handle(ClientResource.java:769)
at org.restlet.resource.ClientResource.get(ClientResource.java:502)
at com.org.restlet.network.ServerConnection.sendGetRequest(ServerConnection.java:58)
at com.org.restlet.resources.SmsAccessCodeResource.sendAccessCode(SmsAccessCodeResource.java:36)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at org.restlet.resource.ServerResource.doHandle(ServerResource.java:449)
at org.restlet.resource.ServerResource.post(ServerResource.java:1114)
at org.restlet.resource.ServerResource.doHandle(ServerResource.java:533)
at org.restlet.resource.ServerResource.doNegotiatedHandle(ServerResource.java:590)
at org.restlet.resource.ServerResource.doConditionalHandle(ServerResource.java:302)
at org.restlet.resource.ServerResource.handle(ServerResource.java:849)
at org.restlet.resource.Finder.handle(Finder.java:513)
at org.restlet.routing.Filter.doHandle(Filter.java:159)
at org.restlet.routing.Filter.handle(Filter.java:206)
at org.restlet.routing.Router.doHandle(Router.java:500)
at org.restlet.routing.Router.handle(Router.java:740)
at org.restlet.routing.Filter.doHandle(Filter.java:159)
at org.restlet.routing.Filter.handle(Filter.java:206)
at org.restlet.routing.Filter.doHandle(Filter.java:159)
at org.restlet.routing.Filter.handle(Filter.java:206)
at org.restlet.routing.Filter.doHandle(Filter.java:159)
at org.restlet.engine.application.StatusFilter.doHandle(StatusFilter.java:155)
at org.restlet.routing.Filter.handle(Filter.java:206)
at org.restlet.routing.Filter.doHandle(Filter.java:159)
at org.restlet.routing.Filter.handle(Filter.java:206)
at org.restlet.engine.ChainHelper.handle(ChainHelper.java:114)
at org.restlet.engine.application.ApplicationHelper.handle(ApplicationHelper.java:75)
at org.restlet.Application.handle(Application.java:391)
at org.restlet.routing.Filter.doHandle(Filter.java:159)
at org.restlet.routing.Filter.handle(Filter.java:206)
at org.restlet.routing.Router.doHandle(Router.java:500)
at org.restlet.routing.Router.handle(Router.java:740)
at org.restlet.routing.Filter.doHandle(Filter.java:159)
at org.restlet.routing.Filter.handle(Filter.java:206)
at org.restlet.routing.Router.doHandle(Router.java:500)
at org.restlet.routing.Router.handle(Router.java:740)
at org.restlet.routing.Filter.doHandle(Filter.java:159)
at org.restlet.routing.Filter.handle(Filter.java:206)
at org.restlet.engine.ChainHelper.handle(ChainHelper.java:114)
at org.restlet.Component.handle(Component.java:391)
at org.restlet.Server.handle(Server.java:491)
at org.restlet.engine.ServerHelper.handle(ServerHelper.java:74)
at org.restlet.engine.http.HttpServerHelper.handle(HttpServerHelper.java:153)
at org.restlet.ext.servlet.ServerServlet.service(ServerServlet.java:1031)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:679)

Answer 1

知道了。这是我在CustomServerResource

中使用的代码

Client client = new Client(new Context(), Protocol.HTTP);
ClientResource clientResource = new ClientResource(httpGetUrl.toString());
clientResource.setNext(client);
clientResource.get();