try{

     connection = (HttpConnection)Connector.open("http://someurl.xml",Connector.READ_WRITE);

     URLEncodedPostData postData = new URLEncodedPostData(URLEncodedPostData.DEFAULT_CHARSET, false);

     postData.append("username", "loginapi");

     postData.append("password", "myapilogin");

     postData.append("term", word);

     connection.setRequestMethod(HttpConnection.POST);

     connection.setRequestProperty("Content-Type","application/x-www-form-urlencoded");

     connection.setRequestProperty("User-Agent","Profile/MIDP-2.0 Configuration/CLDC-1.0");

     requestOut = connection.openOutputStream();

     requestOut.write(postData.getBytes());

     String contentType = connection.getHeaderField("Content-type");

     detailIn = connection.openInputStream();

     int length = (int) connection.getLength();

     ByteArrayOutputStream baos = new ByteArrayOutputStream();

     if(length > 0){//这里长度没有判定的情况下，byte array长度若为-1会产生错误

         byte info[] = new byte[length];

         int bytesRead = detailIn.read(info);

         while(bytesRead > 0) {

             baos.write(info, 0, bytesRead);

             bytesRead = detailIn.read(info);

             }

         baos.close();

         connection.close();

         requestSuceeded(baos.toByteArray(), contentType);

         detailIn.read(info);

     }

     else

     {

          System.out.println("Negative array size");

     }

           requestOut.close();

           detailIn.close();

           connection.close();

    }