ICEfaces
  1. ICEfaces
  2. ICE-2261

OutputChart NPE in WebLogic 9.2

          Details

          • Type: Bug Bug
          • Status: Closed
          • Priority: Major Major
          • Resolution: Fixed
          • Affects Version/s: 1.6.1
          • Fix Version/s: 1.7DR#1, 1.7
          • Component/s: ICE-Components
          • Labels:
            None
          • Environment:
            win xp

            Description

            Problem Description: Using a simple example of charts on Weblogic 9.2:

            <ice:outputChart type="pie2d" labels="pass, fail"
            data="70, 30"
            colors="green, red"/>

            java.lang.NullPointerException
                    at java.io.File.<init>(File.java:194)
                    at com.icesoft.faces.component.outputchart.OutputChart.getFolder(OutputC
            hart.java:529)
                    at com.icesoft.faces.component.outputchart.OutputChart.getNewOutputStrea
            m(OutputChart.java:510)

              Issue Links

              duplicates

              Bug - A problem which impairs or prevents the functions of the product. ICE-2112 OutputChart throws java.lang.ClassCastException when running a portlet

              • Major - Major loss of function.
              • Closed

                Activity

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                Philip Breau added a comment -

                The main issue here is that we rely on ServletContext.getRealPath() to determine the absolute file path on the server to write out the image files to. getRealPath() is not guaranteed by the servlet spec to return a non-null value, and will return null on WebLogic when running an unexploded war (which is why the workaround listed above works). My recommendation would be to avoid using ServletContext.getRealPath() and instead use the temporary file creation mechanism in java.io.File:

                try

                { // Create temp file. File temp = File.createTempFile("pattern", ".suffix"); // Delete temp file when program exits. temp.deleteOnExit(); // Write to temp file BufferedWriter out = new BufferedWriter(new FileWriter(temp)); out.write("aString"); out.close(); }

                catch (IOException e) {
                }

                Show
                Philip Breau added a comment - The main issue here is that we rely on ServletContext.getRealPath() to determine the absolute file path on the server to write out the image files to. getRealPath() is not guaranteed by the servlet spec to return a non-null value, and will return null on WebLogic when running an unexploded war (which is why the workaround listed above works). My recommendation would be to avoid using ServletContext.getRealPath() and instead use the temporary file creation mechanism in java.io.File: try { // Create temp file. File temp = File.createTempFile("pattern", ".suffix"); // Delete temp file when program exits. temp.deleteOnExit(); // Write to temp file BufferedWriter out = new BufferedWriter(new FileWriter(temp)); out.write("aString"); out.close(); } catch (IOException e) { }
                Hide
                Permalink
                yip.ng added a comment -

                Suggested fix will create a temp file outside of the app. context. How do you serve that temp file to the browser?

                Show
                yip.ng added a comment - Suggested fix will create a temp file outside of the app. context. How do you serve that temp file to the browser?
                Hide
                Permalink
                Ken Fyten added a comment -

                The fix for ICE-2112 also resolves this issue on WebLogic.

                Show
                Ken Fyten added a comment - The fix for ICE-2112 also resolves this issue on WebLogic.

                  People

                  • Assignee:
                    Unassigned
                    Reporter:
                    Philip Breau
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                    Dates

                    • Created:
                      Updated:
                      Resolved: