Negative Array Size Exception

Question

I'm new to Blackberry and I'm trying to get post a search term to a server in xml. But I keep getting this error `Request Failed. Reason Java.lang.NegativeArraySizeException`. I wanted to check if the connection works before I parse the data so from this connection, am expecting to receive the response text in xml. Below is the code: ``` public void webPost(String word) { word = encode (word); String responseText; try{ HttpConnection connection = (HttpConnection)Connector.open("http://some url.xml"); connection.setRequestMethod(HttpConnection.POST); connection.setRequestProperty("Content-Type","application/x-www-form-urlencoded"); String postData = "username=loginapi&password=myapilogin&term="+ word; connection.setRequestProperty("Content-Length",Integer.toString(postData.length())); connection.setRequestProperty("User-Agent","Profile/MIDP-2.0 Configuration/CLDC-1.0"); OutputStream requestOut = connection.openOutputStream(); requestOut.write(postData.getBytes()); InputStream detailIn…

Accepted Answer

Found it! I forgot to open the Output Stream connection

`requestOut = connection.openOutputStream();`

and I introduced `ByteArrayOutpuStream` which helped me finally display the input stream. I also, changed the way I was sending parameters, and used `URLEncodedPostData` type instead. Since the server was interpreting my former request as a GET instead of a POST. And all I have to do now is to parse the info coming in.

```
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){
         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();
    }
```

PS. I posted the above code to help anyone with the same problem.

PPS. I also used Kalai's format and it helped wonderfully.

Negative Array Size Exception

Solution

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