ASP page not receiving HTTP request data

[Monica Young]

First - I'm new to J2ME & I'm a novice to java in general. I'm an ASP programmer & I need to write an app for a nextel phone in J2ME.

I have written a test application that just sends an http request to my asp page and the page should send back the appropriate response to be displayed on the phone, however the asp page does not seem to be receiving the data. However it IS sending back a response. I have tried removing flush() from the dataOutputStream, but that didn't fix the problem. Here is the code inside my MIDlet:

private void loginViaHTTPConnection(String strLogin) throws IOException {              
        HttpConnection hconn = null;
        InputStream is = null;
        OutputStream os = null;
        StringBuffer data = new StringBuffer();
        try {
          hconn = (HttpConnection)Connector.open(url);
          hconn.setRequestMethod(HttpConnection.POST);
          hconn.setRequestProperty("IF-Modified-Since", 
            "20 Jan 2001 16:19:14 GMT");
          hconn.setRequestProperty("User-Agent",
            "Profile/MIDP-2.0 Configuration/CLDC-1.0");
          hconn.setRequestProperty("Content-Language", "en-CA");
          os = hconn.openOutputStream();
 
          // send request to the ASP script
          String str = "PIN=" + strLogin;
          byte postmsg[] = str.getBytes();
          for(int i=0;i < postmsg.length;i++) {
            os.write(postmsg[i]);
          }
          //os.flush();
 
          //receive response
          is = hconn.openDataInputStream();
          int ch;
          while((ch = is.read()) != -1) {
            data.append((char) ch);
          }
        } finally {
          if(is!= null) {
            is.close();
          }
          if(os != null) {
            os.close();
          }
          if(hconn != null) {
            hconn.close();
          }
        }
        
        resultItem.setText(data.toString());
        
        display.setCurrent(resultScreen);
    } 
}

[ May 10, 2006: Message edited by: Mark Spritzler ]

[Monica Young]

the ASP code:
<%
PIN = request("PIN")
If PIN = "" Then
response.write "INVALID"
Else
response.write "GOOD"
End If
%>

This code always returns "INVALID" no matter what I pass it.

Any help would be greatly appreciated.
[ May 10, 2006: Message edited by: Monica Young ]

[Punit Raizada]

Try this in your connection code.

    
HttpConnection hconn = null;
InputStream is = null;
OutputStream os = null;
StringBuffer data = new StringBuffer();
try {
    String str = "PIN=" + strLogin;
 
    hconn = (HttpConnection)Connector.open(url);
   
    hconn.setRequestProperty("IF-Modified-Since", 
            "20 Jan 2001 16:19:14 GMT");
    hconn.setRequestProperty("User-Agent",
            "Profile/MIDP-2.0 Configuration/CLDC-1.0");
    hconn.setRequestProperty("Content-Language", "en-CA");
    // Adding these two lines
    hconn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
    hconn.setRequestProperty("Content-Length", ""+ str.length());
    
    hconn.setRequestMethod(HttpConnection.POST);
 
    os = hconn.openOutputStream(); 
    // send request to the ASP script    
    byte postmsg[] = str.getBytes();
    for(int i=0;i < postmsg.length;i++) {
       os.write(postmsg[i]);
     }
    // You will need the flush to dump the data from the stream on to the 
    // connector's logic
    os.flush();
 
    //You might want to check for the response code here 
    //before accessing the data.
    int rc = hconn.getResponseCode();
 
          //receive response
          is = hconn.openDataInputStream();
          int ch;
          while((ch = is.read()) != -1) {
            data.append((char) ch);
          }
        } finally {
          if(is!= null) {
            is.close();
          }
          if(os != null) {
            os.close();
          }
          if(hconn != null) {
            hconn.close();
          }
        }
 

Let me know if this works

[Monica Young]

The asp page is still not seeing the POST data. I have since gotten the code to work using a StreamConnection object. I had to replace all the spaces with '%20', but that was no big deal. Here's the code I used for the connection, in case anyone's interested.

    
private String getResponse(String sendURL) throws IOException {
        StreamConnection conn = null;
        InputStream is = null;
        StringBuffer data = new StringBuffer();
        
        //sendURL=http://[site]/testing.asp?PIN=1234
        try {
            // Open the HTTP connection
            conn = (StreamConnection)Connector.open(sendURL);
            
            // Obtain an input stream for the connection
            is = conn.openInputStream();
            
            // Read a line at a time from the input stream
            int ch;
            while ((ch = is.read()) != -1) {
                // Read the line a character at a time
                data.append((char)ch);
            }
        } catch (IOException e) {
            System.err.println("The connection could not be established.");
        }
        return data.toString();
    }

[ May 11, 2006: Message edited by: Monica Young ]

[Monica Young]

This seem to be an ASP / VBScript issue.

I would really rather use POST so if anyone has any suggestions, I would really appreciate the help

Thanks in advance.

[Monica Young]

Someone answered my question in another forum. They told me not to send the content length, put an \r at the end of my POST data & not to loop through the postmsg to write to the Output Stream. Moral: Don't always trust code from an online tutorial.

Here's my working POST to ASP code:

    
private void loginViaHTTPConnection(String strLogin) throws IOException {
        HttpConnection hconn = null;
        InputStream is = null;
        OutputStream os = null;
        StringBuffer data = new StringBuffer();
        try {
            String str = "PIN=" + strLogin + '\r';
            
            hconn = (HttpConnection)Connector.open(url);
            
            hconn.setRequestProperty("IF-Modified-Since",
                    "20 Jan 2001 16:19:14 GMT");
            hconn.setRequestProperty("User-Agent",
                    "Profile/MIDP-2.0 Configuration/CLDC-1.0");
            hconn.setRequestProperty("Content-Language", "en-CA");
            hconn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");           
            hconn.setRequestMethod(HttpConnection.POST);
            
            // Send request to ASP page
            os = hconn.openOutputStream();
            os.write(str.getBytes());
            os.flush();
            
            // Receive response
            is = hconn.openDataInputStream();
            int ch;
            while((ch = is.read()) != -1) {
                data.append((char) ch);
            }
        } finally {
            if(is!= null) {
                is.close();
            }
            if(os != null) {
                os.close();
            }
            if(hconn != null) {
                hconn.close();
            }
        }    
        resultItem.setText(data.toString());
        
        display.setCurrent(resultScreen);
    }

[ May 12, 2006: Message edited by: Monica Young ]

[Battula lakshman]

hi can you please post the ASP code please i am also facing the same problem in the SERVER side.
I am new to ASP
please help me
lakshman

[Monica Young]

The ASP code was posted above. The input stream will read whatever is written to the page.