Applet run exe with dll

Question

Hi, i have a problem with a applet
From my jsp i call my jar applet signed
This applet call a client program .exe for digital sign created in java.
     // FUNZIONE PER ESEGUIRE UN FILE .EXE O .BAT
     public int runFile(String pathfile){
          int exitVal = 0;
          String errors = "";
          try {
               Runtime rt = Runtime.getRuntime();
               Process proc = rt.exec(pathfile);
               InputStream stderr = proc.getErrorStream();
               InputStreamReader isr = new InputStreamReader(stderr);
               BufferedReader br = new BufferedReader(isr);
               String line = null;
               errors = errors + "Process exeFileName: " + pathfile + "\r\n";
               while ( (line = br.readLine()) != null){
                    errors = errors + line + "\r\n";
               exitVal = proc.waitFor();
               errors = errors + "Process exitValue: " + exitVal;
          } catch (Throwable t){
               // SCRITTURA LOG
               System.out.println("JAVA ERROR " + t.getMessage());
               JOptionPane.showMessageDialog(null, t.getMessage());
               exitVal = -1;
          return exitVal;
     }For digital sign use javasign library and 3 dll.
the problem is that when i run exe manually work, but when i run from applet it's block before sign..
(lock between message "1" and "2"
     public void firmaFile(String pathSource, String pathDest, String code_pin) {
          String returnValue = "";
               File src = new File(pathSource);
               File dest = new File(pathDest);
               String driver="incryptoki2.dll";
               String KEY_LABEL="DSPrivateKey#0";
               try {
                    JOptionPane.showMessageDialog(null,"1");     
                    CryptokiGenerator p7genSC = new CryptokiGenerator(driver,src,dest,KEY_LABEL,code_pin);
                    JOptionPane.showMessageDialog(null,"2");     
                    p7genSC.generate();
                    JOptionPane.showMessageDialog(null,"3");     
               } catch (Exception e) {
              }i think the problem is caused from use dll, but why ???
can you help me ??
sorry for my bad english..

Answer 1

Solved !!
in your link i found error code..
when run exe i MUST read ErrorStream and InputStream in two separate thread !!!!
public class RunnableHelper {
     // COSTANTI
     private static final String LOGGER_PREFIX = "Vega-Firma Digitale";
     // FUNZIONE PER ESEGUIRE UN FILE .EXE O .BAT
     public int runFile(String pathfile){
          int exitVal = 0;
          String errors = "";
          try {
               Runtime rt = Runtime.getRuntime();
               Process proc = rt.exec(pathfile);
               /* error code !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
               InputStream stdout = proc.getInputStream();
               InputStreamReader isrout = new InputStreamReader(stdout);
               BufferedReader brout = new BufferedReader(isrout);
               line = null;
               messages = messages + "Process exeFileName: " + pathfile + "\r\n";
               while ( (line = brout.readLine()) != null){
                    messages = messages + line + "\r\n";
               InputStream stderr = proc.getErrorStream();
               InputStreamReader isr = new InputStreamReader(stderr);
               BufferedReader br = new BufferedReader(isr);
               line = null;
               errors = errors + "Process exeFileName: " + pathfile + "\r\n";
               while ( (line = br.readLine()) != null){
                    errors = errors + line + "\r\n";
            // correct code     
            StreamGobbler errorGobbler = new StreamGobbler(proc.getErrorStream(), "ERROR");           
            StreamGobbler outputGobbler = new StreamGobbler(proc.getInputStream(), "OUTPUT");
            errorGobbler.start();
            outputGobbler.start();
               exitVal = proc.waitFor();
               errors = errors + "Process exitValue: " + exitVal;
          } catch (Throwable t){
               // SCRITTURA LOG
               System.out.println("JAVA ERROR " + t.getMessage());
               exitVal = -1;
          return exitVal;
     // CLASSE INTERNA PER LETTURA STREAM
     class StreamGobbler extends Thread
         InputStream is;
         String type;
         StreamGobbler(InputStream is, String type)
             this.is = is;
             this.type = type;
         public void run()
             try
                 InputStreamReader isr = new InputStreamReader(is);
                 BufferedReader br = new BufferedReader(isr);
                 String line=null;
                 while ( (line = br.readLine()) != null)
                     System.out.println(type + ">" + line);   
                 } catch (IOException ioe)
                     ioe.printStackTrace(); 
}Thanks for good link !!
Edited by: SWING_resize_component on 18-mag-2009 16.26