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JSP
json problem
caleb momanyi
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Posts: 43
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posted 11 years ago
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hi all,
I am getting this error when i run
servlet
java.lang.NoClassDefFoundError: org/json/JSONObject at controller.CometServlet.doPost(CometServlet.java:113) at javax.servlet.http.HttpServlet.service(HttpServlet.java:688) at javax.servlet.http.HttpServlet.service(HttpServlet.java:770) at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1542) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161) at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231) at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317) at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195) at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:849) at com.sun.grizzly.comet.CometEngine.executeServlet(CometEngine.java:444) at com.sun.grizzly.comet.CometEngine.handle(CometEngine.java:308) at com.sun.grizzly.comet.CometAsyncFilter.doFilter(CometAsyncFilter.java:87) at com.sun.grizzly.arp.DefaultAsyncExecutor.invokeFilters(DefaultAsyncExecutor.java:171) at com.sun.grizzly.arp.DefaultAsyncExecutor.interrupt(DefaultAsyncExecutor.java:143) at com.sun.grizzly.arp.AsyncProcessorTask.doTask(AsyncProcessorTask.java:102) at com.sun.grizzly.http.TaskBase.run(TaskBase.java:193) at com.sun.grizzly.http.TaskBase.execute(TaskBase.java:175) at com.sun.grizzly.arp.DefaultAsyncHandler.handle(DefaultAsyncHandler.java:145) at com.sun.grizzly.arp.AsyncProtocolFilter.execute(AsyncProtocolFilter.java:210) at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90) at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79) at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54) at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59) at com.sun.grizzly.ContextTask.run(ContextTask.java:71) at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532) at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513) at java.lang.Thread.run(Thread.java:722) Caused by: java.lang.ClassNotFoundException: org.json.JSONObject at org.glassfish.web.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1509) at org.glassfish.web.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1359) ... 34 more
my servlet do post method which I am invoking looks like this
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { int incrementAndGet = counter.incrementAndGet(); int count = counter.get(); CometEngine engine = CometEngine.getEngine(); CometContext<?> context = engine.getCometContext(contextPath); context.notify(null); response.setContentType("application/json; charset=UTF-8"); JSONObject json = new JSONObject(); json.put("count", count); PrintWriter writer = response.getWriter(); writer.print(json); // request.getRequestDispatcher("index.jsp").forward(request, response); return; }
why am i getting this error while i have all the imports correct and added the json-rpc-1.0.jar into the project?
caleb momanyi
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Posts: 43
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posted 11 years ago
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ok false alarm there wasn't a problem. i needed to restart the server before using json. sorry
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