Download multiple files from ftp

[Satanduvel]

Hi everybody i'm back. My problem is now I can download 1 file but when i'm selecting 2 rows and want to download the files i get this error: java.lang.NullPointerException. Here are some lines i got by the System out.println lines.

Lines i get for downloading 1file:

Code: Select all

max1
Value:1.jpg
Root:/web/../..
/web/../../1.jpg
Directory:/web/../..
In:org.apache.commons.net.io.SocketInputStream@ee3aa7

Lines i get downloading more files:

Code: Select all

max2
Value:1.jpg
Value:aboutaction.html
Root:null
/web/../../1.jpg
Directory:/web/../..
In:null
Error: java.lang.NullPointerException

So you see the Root is different but i don't know how it comes.

Here is the code when i pres for downlaoding:

Code: Select all

else if (evt.getSource() == bDownload)
        {
           try{
               int maxRows;
               int[] selRows;
               
                    selRows = table1.getSelectedRows();
                    maxRows = table1.getSelectedRowCount();
                    System.out.println("max"+maxRows);
                    if (selRows.length > 0) {
                       for (int a = 0; a < maxRows; a++){
                          for (int i= 0; i < 3 ; i++) {
                             TableModel tm = table1.getModel();
                             size2 = tm.getValueAt(selRows[a],2);
                             if (i==1){
                                 value = tm.getValueAt(selRows[a],i);
                                System.out.println("Value:" + value);
                                threadDownload((String) value);
                             }
                          }
                          }
                       }
               } catch (Exception e){System.out.println(e.toString());}
        }

Then here is the thread:

Code: Select all

public synchronized void threadDownload(final String valueString) {       
       new Thread(new Runnable() {
            public void run() {
               try{
               wrapper.changeWorkingDirectory(Root);
               System.out.println("Root:" +wrapper.printWorkingDirectory());
               Object size = size2;
                doDownload(valueString,size);
               }
               catch (Exception e){}
            }
        }).start();
    }

Here is the code for uploading the file:

Code: Select all

public synchronized void doDownload(String myValue,Object size2) {
      try {
          //wrapper.changeWorkingDirectory(Root);
         lUpload.setText("Downloading file : " + myValue);
            lUpload.setVisible(true);
          aProgressBar.setVisible(true);
          aProgressBar.setStringPainted(true);
          bDownload.setEnabled(false);
            bUpload.setEnabled(false);
            bMkdirC.setEnabled(false);
            bMkdirS.setEnabled(false);
            table.setEnabled(false);
            table1.setEnabled(false);
            bFindLoc.setEnabled(false);
            bFindSer.setEnabled(false);
          remoteFileName = Root + "/" + myValue;
          //remoteFileName = myValue;
          localFileName = path + "/" + myValue;
          byte[] buffer = new byte[1024];

          String size8 = size2.toString();
            int size = Integer.parseInt(size8);
           
          aProgressBar.setMaximum(100);
          
          FileOutputStream out = new FileOutputStream(localFileName);
          System.out.println(remoteFileName);
          System.out.println("Directory:" +wrapper.printWorkingDirectory());
          InputStream in = wrapper.retrieveFileStream(remoteFileName);
          System.out.println("In:"+in);
          int counter = 0;
            double bytesDown = 0;
            int percVal = 0;
           
            while ((counter = in.read(buffer)) >= 0 ) {
               
                bytesDown += counter;
                out.write(buffer,0,counter);
                percVal = (int) ((bytesDown / size) * 100);
                aProgressBar.setValue(percVal);
                aProgressBar.setString("" + percVal + "%");
                if (percVal == 100){
                   refreshDownload();
                   refreshUpload();
                }
            }
            out.close();
             in.close();
       } catch (Exception ex) {
          System.out.println("Error: " + ex.toString()+ " message: " + ex.getMessage());
       }
    }

Hope you can help me

Satanduvel

[Satanduvel]

Pls can somebody help me?

Satanduvel

[ggomez]

InputStream in = wrapper.retrieveFileStream(remoteFileName);

your not getting the inputstream so it stay in "null"
check if the archives exist or if the method that returns the inputstream works fine.

good luck

[Satanduvel]

I found the problem but thx for replying

Satanduvel