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PORuntime.exec() won't finish properly
 

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  1. PORuntime.exec() won't finish properly
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    <p>I've created a WebApp that relies on external scripts to gather query request by the user (internal software). I've tested, with sucess, the WebApp off the glassfish server provided by netbeans but whenever I try and upload my App to a third party server (Apache Tomcat) I run into the issue of the process.getRuntime exitValue never being written and the WebApp never gets to the result page....</p> <p>This is the code that I have implemented so far: </p> <p><strong>Update --> The code now works after reading both stderr and stdin:</strong></p> <pre><code> pd = new ProcessBuilder("runscript.bat"); pd.redirectErrorStream(true); process = pd.start(); StreamGobbler inputGobbler = new StreamGobbler(process.getInputStream(), "Input"); StreamGobbler errorGobbler = new StreamGobbler(process.getErrorStream(),"Error"); errorGobbler.start(); inputGobbler.start(); int exitVal = -1; try { exitVal = process.waitFor(); } catch (InterruptedException ex) { //log Error } class StreamGobbler extends Thread { OutputWriterReader outWR = new OutputWriterReader(); BufferedWriter deadWriter; InputStream is; // reads everything from is until empty. StreamGobbler(InputStream is, String type) { this.is = is; createWatch(type); } // depending on if Error stream or Input Stream private void createWatch(String type){ try { if(type.equals("Error")) deadWriter = new BufferedWriter(new FileWriter("StdError.txt")); else if(type.equals("Input")) deadWriter = new BufferedWriter(new FileWriter("StdInput.txt")); } catch (IOException ex) { //log Error } } @Override public void run() { try { InputStreamReader isr = new InputStreamReader(this.is); BufferedReader br = new BufferedReader(isr); String line=null; while ( (line = br.readLine()) != null) deadWriter.append(line); deadWriter.flush(); deadWriter.close(); } catch (IOException ioe) { //log Error } } </code></pre> <p>}</p> <p>Any Suggerstions? Thanks in advance for any help</p>
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USShahab
    1. USShahab
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
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      1. PORuntime.exec() won't finish properly
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      1. VTUpMod
    2. VO
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      1. VTUpMod
    1. COdon't know, because I can's see any code for Process/ProcessBuider, but for <= Java6 you have to use whatever.close() in the finally{..} block
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      1. PORuntime.exec() won't finish properly
      1. USmKorbel
    2. COI tried that as well, still gets stuck in this section of the code
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      1. PORuntime.exec() won't finish properly
      1. USShahab
 

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