@Override
 public void objectToEntry(WebURL url, TupleOutput output) {
   output.writeString(url.getPrimeKey());
   output.writeString(url.getURL());
   output.writeInt(url.getDocid());
   output.writeInt(url.getParentDocid());
   output.writeString(url.getParentUrl());
   output.writeShort(url.getDepth());
   output.writeString(url.getCookie());
   output.writeString(url.getFormParams());
   output.writeString(url.getMethod());
 }
 public void downLoadText(String pageText, WebURL webUrl) throws IOException {
   int docid = webUrl.getDocid();
   File file_output = new File("E:/crawlData/pageText/" + docid + ".txt");
   if (!file_output.exists()) {
     File parent = new File(file_output.getParent());
     if (!parent.exists()) {
       parent.mkdirs();
     }
   }
   FileWriter fWriter = new FileWriter(file_output);
   fWriter.write(pageText);
   fWriter.close();
 }