Question

I am trying to send a String[] array in j2me using ObjectOUputStream, but i keep getting this error,

java.lang.IllegalArgumentException: Not an HTTP URL

Here is my code:

    OutputStream os=null;
    HttpConnection hc= null;
    ObjectOutputStream oj=null;

    //get the URL
    String serverURL=entry.getUrl();

    hc=(HttpConnection)Connector.open(serverURL, Connector.READ_WRITE, true);
    hc=(HttpConnection)Connector.open(serverURL);


    hc.setRequestMethod (HttpConnection.POST);
    hc.setRequestProperty ("Content-Type", "application/x-www-form-urlencoded");
    hc.setRequestProperty ("User-Agent", "Profile/MIDP-2.0 Configuration/CLDC-1.0");
    hc.setRequestProperty ("Content-Language", "en-US");

    System.out.println ("Posting to the URL: " + entry.getVectorParams());

    //open the output stream to send the post parameters
    //os=hc.openOutputStream();

    oj=(ObjectOutputStream)hc.openOutputStream();
    //writing post parameters
    String[] bg=entry.getVectorParams();

    oj.writeObject(bg);

Please give a suggestion.

I checked my URL, it is correct and regarding Connector.open(), i pasted it twice here, not in my actual code. Is there anything else that I am doing wrong?

The System.out.println("Posting to the URL: " + entry.getVectorParams()), this only prints the post parameters, I have the serverurl passed in here:

String serverURL=entry.getUrl();
hc=(HttpConnection)Connector.open(serverURL, Connector.READ_WRITE, true);

My server URL is : http://localhost:8080/Web/gServer.jsp

Answer 1

The value of your serverURL variable must not be a valid URL. Try printing it out, and checking.

You have this debug statement:

System.out.println ("Posting to the URL: " + entry.getVectorParams());

but that is printing out the params, not the url. You should print out the serverURL variable.

Also, you are calling Connector.open() twice in a row. There’s no need for that.

Update: I also think there could be a problem with the way you’re writing the POST parameters to your connection’s OutputStream. I wouldn’t use an ObjectOutputStream. See something like this for an example of making J2ME POST calls. Basically, you make a String of the POST parameters, separated by &, and then use String.getBytes() to convert to a byte[] for writing to the OutputStream.