I debugged for some time and realized, that the actual problem is
that my server side code doesnt find the JFreeChart external libraries
when running. I copied the libraries to /war/WEB-INF/lib but the
behaivor still the same.
On Jan 27, 10:38 am, Sednus <sed...@gmail.com> wrote:
> Hi,
> Im trying load an image from the server using RPC, the problem is
> that it always fails to load the image and throws the following error:
> com.google.gwt.user.client.rpc.StatusCodeException: 403 <html>
> <head>
> <meta http-equiv="Content-Type" content="text/html;
> charset=ISO-8859-1"/>
> <title>Error 403 FORBIDDEN</title>
> </head>
> <body><h2>HTTP ERROR 403</h2>
> <p>Problem accessing /diskmonitor/. Reason:
> <pre> FORBIDDEN</pre></p><hr /><i><small>Powered by
> Jetty://</small></i><br/>
> ....
>
> Im implementing my classes as the following:
>
> public class ChartImage extends Image {
> private UpdatePlotsServiceAsync plotService;
>
> public ChartImage(String hostname) {
> super();
>
> /*
> * Setup connection to chart generator service.
> */
> plotService = (UpdatePlotsServiceAsync)
> GWT.create(UpdatePlotsService.class);
> ServiceDefTarget endpoint = (ServiceDefTarget)plotService;
> String url = GWT.getModuleBaseURL()+"";
> System.out.println(url);
> endpoint.setServiceEntryPoint(url);
>
> /*
> * Setup the callback from the chart generator service.
> */
> AsyncCallback<String> callback = new AsyncCallback<String>()
> {
> /*
> * If the call was successful, we will get back the name
> of the chart
> * that was created and stored on the server.
> */
> public void onSuccess(String s) {
> String chartName = (String)s;
> String imageUrl = GWT.getModuleBaseURL() + chartName;
> setUrl(imageUrl);
> }
>
> /*
> * Something went wrong with the call. Handle the issue
> how you'd like.
> */
> public void onFailure(Throwable ex) {
> System.out.println("Failed to load image");
> ex.printStackTrace();
> }
> };
>
> /*
> * Make the call to the chart generator service with the
> previously created
> * callback.
> */
> plotService.getImagesPaths("default", callback);
>
> /*
> * Since we've made an asynchronous call, we don't need to do
> anything further.
> * The callback object will handle the remainder of the work
> for us.
> */
> }
>
> }
>
> The image is generated in the server side using JFreeChart
>
> public class UpdatePlotsServiceImpl extends RemoteServiceServlet
> implements UpdatePlotsService {
> @Override
> public String getImagesPaths(String hostname) {
> String chartName = "";
> /*
> * Create the data for the pie chart
> */
> DefaultPieDataset dataset = new DefaultPieDataset();
> //Fake Data
> dataset.setValue("Available", 71);
> dataset.setValue("Used", 39);
>
> String title = "Data at:"+ info.getHostname()+"-"+
> info.getLocation();
> JFreeChart chart = ChartFactory.createPieChart(title, dataset,
> true, false, false);
> File file = new File("chart.png");
> //Save the image
> try {
>
> ChartUtilities.saveChartAsPNG(file, chart, 800, 600);
>
> } catch (IOException e) {
> // TODO Auto-generated catch block
> e.printStackTrace();
> }
> return file.getName();
> }
>
> }
>
> Please help
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