“未找到(404)"； Restlet中的错误 [英] "Not Found (404)" error in restlet

问题描述

我是Restlet框架的新手. 我创建了一个小型的Java ee应用程序，但它给我一个错误未找到(404)"

i am new to restlet framework. i have created a small java ee application but it give me an error "Not Found (404)"

public class MailServerApplication extends Application {
   @Override
   public Restlet createInboundRoot() {
      Router router = new Router(getContext());
      router.attach("http://localhost:8084/accounts/{accountId}/mails/{mailId}", MailServerResource.class);
      return router;
   }
}

////////////////////////////////
public class MailServerResource extends ServerResource {
   @Override
   protected Representation get() throws ResourceException {

      DomRepresentation result = null;
      try {
         result = new DomRepresentation();
         result.setIndenting(true);
         Document doc = result.getDocument();
         Node mailElt = doc.createElement("mail");
         doc.appendChild(mailElt);
         Node statusElt = doc.createElement("status");
         statusElt.setTextContent("received");
         mailElt.appendChild(statusElt);
         Node subjectElt = doc.createElement("subject");
         subjectElt.setTextContent("Message to self");
         mailElt.appendChild(subjectElt);
         Node contentElt = doc.createElement("content");
         contentElt.setTextContent("Doh!");
         mailElt.appendChild(contentElt);
      } catch (IOException e) {
      }
      return result;
   }
   @Override
   protected Representation put(Representation representation) throws ResourceException {
      DomRepresentation mailRep = new DomRepresentation(representation);
      Document doc;
      try {
         doc = mailRep.getDocument();
         Element mailElt = doc.getDocumentElement();
         Element statusElt = (Element) mailElt
         .getElementsByTagName("status").item(0);
         Element subjectElt = (Element) mailElt.getElementsByTagName(
         "subject").item(0);
         Element contentElt = (Element) mailElt.getElementsByTagName(
         "content").item(0);
         Element accountRefElt = (Element) mailElt.getElementsByTagName(
         "accountRef").item(0);
         System.out.println("Status: " + statusElt.getTextContent());
         System.out.println("Subject: " + subjectElt.getTextContent());
         System.out.println("Content: " + contentElt.getTextContent());
         System.out.println("Account URI: " + accountRefElt.getTextContent());
      } catch (IOException e) {
         throw new ResourceException(e);
      }
      return null;
   }
}

但是如果我运行/调试它.它给出以下错误:

but if i run/debug it. it gives following error:

Exception in thread "main" Not Found (404) - Not Found
        at org.restlet.resource.ClientResource.handle(ClientResource.java:858)
        at org.restlet.resource.ClientResource.handle(ClientResource.java:763)
        at org.restlet.resource.ClientResource.get(ClientResource.java:496)
        at MailClient.main(MailClient.java:19)

谢谢.

推荐答案

感谢河马.
实际上问题出在网址中.
我必须修改以下行

hi thanks to hippo.
actually the problem was in the url.
i had to modify following line

     router.attach("http://localhost:8084/accounts/{accountId}/mails/{mailId}", MailServerResource.class);

进入此行.

     router.attach("/accounts/{accountId}/mails/{mailId}", MailServerResource.class);

如果您将restlet框架用于JavaSE，那么第一个URL就可以了.但是对于Web应用程序(java ee)，您必须使用服务器的相对路径.

if you use the restlet framework for JavaSE then first url was ok. but for web application (java ee) you have to use relative path of the server.

再次感谢您的帮助.

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