REST(Jersey + Jetty).. Why my jetty server says 404 when i have that URL

[Anish Shah]

I searched this forum.. found a similar topic but not the answer...

Case: I am implementing a REST framework with Jersey.. My server is Jetty..
Link: The base of my implementation and problem...How do i create an embedded Jetty instance that uses Jersey

Alright, now the exception thrown..

  2010-03-03 06:17:38,930 ERROR [httpSSLWorkerThread-80-3] StatisticsManager.getStats - Error updating Stream Service .. GET http://10.100.7.10:43001/srm/stats returned a response status of 404
com.sun.jersey.api.client.UniformInterfaceException: GET http://10.100.7.10:43001/srm/stats returned a response status of 404
	at com.sun.jersey.api.client.WebResource.handle(WebResource.java:563)
	at com.sun.jersey.api.client.WebResource.get(WebResource.java:179)
	at com.n2bb.srmui.stats.StatisticsManager.getStats(StatisticsManager.java:25)
	at com.n2bb.srmui.stats.DisplayStatsAction.executeAction(DisplayStatsAction.java:24)
	at com.n2bb.action.AbstractAction.execute(AbstractAction.java:57)
	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
	at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:718)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
	at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:411)
	at org.apache.catalina.core.ApplicationDispatcher.doInvoke(ApplicationDispatcher.java:855)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:703)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:542)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:474)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:366)
	at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:767)
	at org.apache.jsp.index_auth._jspService(index_auth.java from :49)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:93)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:470)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:364)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
	at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:411)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:290)
	at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:271)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:202)
	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632)
	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577)
	at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:94)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:206)
	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632)
	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:571)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1080)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:150)
	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632)
	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:571)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1080)
	at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:272)
	at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:637)
	at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:568)
	at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(DefaultProcessorTask.java:813)
	at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcessorTask(DefaultReadTask.java:341)
	at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:263)
	at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:214)
	at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:265)
	at com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run(SSLWorkerThread.java:106)  

I have a DataBean, Resource class and a Jetty class which creates a jetty instance based on the above link..
Below is the launch method in Jetty class:

    	
public void launch() {
		server = new Server(43001);        
		servletContext = new Context(server,"/",Context.SESSIONS);
		// add servlets..

		ServletHolder sh = new ServletHolder(ServletContainer.class);
		sh.setInitParameter("com.sun.jersey.config.property.resourceConfigClass", "com.sun.jersey.api.core.PackagesResourceConfig");
		sh.setInitParameter("com.sun.jersey.config.property.packages", "com.n2bb.srm.web.resource");		
		servletContext.addServlet(sh, "/srm");
		try {
			server.start();
		} catch (Exception e) {
			e.printStackTrace();
		}		
	}

com.n2bb.srm.web.resource.. this package has my resource class

@Path("/srm")
public class SRMResource {	
    @GET
    @Path("stats")  
    @Produces({"application/xml","application/json"})
    public StatisticsData getStats() {
		try {
			StatisticsData sd = SRMStats.getInstance().getStatsForUI();
			return sd;
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
    } 
}

Client code in a different project:

	public StatisticsData getStats() {
		log.info("getStats");
		try {
			Client c = Client.create();
			WebResource r = c.resource(UriBuilder.fromUri(http://10.100.7.10:43001/srm/).build());
			StatisticsData response = r.path("stats").get(StatisticsData.class);
			return response;
			
		} catch (Exception e) {
			log.error("Error updating Stream Service .. " + e.getMessage(), e);
		}		
	}

Why is my server responding with 404 not found error... What am i doing wrong ??

Thank you very much...

[Anish Shah]

OK.. somehow i got it to work..

Change i made..

servletContext.addServlet(sh, "/srm"); 

to

servletContext.addServlet(sh, "/*"); 

Now i don't get this ?? I am not able to find my correct path..

What would happen if i have to add multiple servlets... the /* would already have loaded everything...

[Ulf Dittmer]

the /* would already have loaded everything...

... which suggests that mapping a servlet to "/..." is not generally a good idea.

[Anish Shah]

Ulf Dittmer wrote:

the /* would already have loaded everything...

... which suggests that mapping a servlet to "/..." is not generally a good idea.

OK.. i tried every other combination to find the actual URL..
I tried...
/
/srm
/srm/
srm/ --- exception
/*srm
/*srm*
/srm*
" " -- blank..

Only /* works which means it loads everything

Now what if i want to add a new servlet down the line...
Something like

servletContext.addServlet(new ServletHolder(new XYZServelet), "/XYZ");

Now i already have

servletContext.addServlet(new ServletHolder(ServletContainer.class), "/*");

Whats going to happen in this scenario...

Also.. off the topic..
Every Servet container(like Jetty in my case) can support a max of 1 ServletContext right ??

Thank you...