POST UTF-8 encoded data to the server in J2ME

By: Ash Emailed: 1588 times Printed: 2041 times    

Latest comments
By: rohit kumar - how this program is work
By: Kirti - Hi..thx for the hadoop in
By: Spijker - I have altered the code a
By: ali mohammed - why we use the java in ne
By: ali mohammed - why we use the java in ne
By: mizhelle - when I exported the data
By: raul - no output as well, i'm ge
By: Rajesh - thanx very much...
By: Suindu De - Suppose we are executing

This sample code shows how to POST UTF-8 encoded data to the server in J2ME. The first requirement is to set the content-type for the connection. You should also use a OutputStreamWriter and pass "UTF-8" as the second parameter. Also note that the first parameter passed to this function 'data' should be encoded to UTF-8 bytes.

private void sendData(StringBuffer data,String serverUrl) throws IOException  
    {            
        HttpConnection connection = (HttpConnection) Connector.open(serverUrl,Connector.READ_WRITE);
        
        connection.setRequestMethod(HttpConnection.POST);        
        connection.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
        connection.setRequestProperty("Content-Length",String.valueOf(data.toString().getBytes("UTF-8").length));        
        connection.setRequestProperty("User-Agent","Profile/MIDP-2.0 Configuration/CLDC-1.1");
        connection.setRequestProperty("Accept-Charset","UTF-8;q=0.7,*;q=0.7");
        connection.setRequestProperty("Accept-Encoding","gzip, deflate");
        connection.setRequestProperty("Accept","text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5");        
        
        InputStream inputStream = null;
        OutputStreamWriter out = null;
        byte[] readData = new byte[HTTP_INPUT_BUFFER_SIZE];        
                 
        String response;       
        
        try
        {
            // --- write ---
            out = new OutputStreamWriter(connection.openOutputStream(),"UTF-8");            
            out.write(data.toString());            
            out.close();
            // --- read ---
            
            int responseCode = connection.getResponseCode();            
            
            if (responseCode != HttpConnection.HTTP_OK)
            {
                throw new IOException("HTTP response code: " + responseCode);
            }
            
            inputStream = connection.openInputStream();
                                   
            int actual = inputStream.read(readData);
            
            if (actual==0)
            {
                throw new IOException("No response from server");                
            }
            
            
            response = new String(readData,0,actual,"UTF-8");
            
            if (!response.equalsIgnoreCase(SUCCESS_MESSAGE))
            {
                throw new IOException(response);
            }            
        }
        finally
        {            
            if (out!=null)
            {
                try
                {
                    out.close();
                } catch (IOException ex) {}
            }
            if (inputStream!=null)
            {
                try
                {
                    inputStream.close();
                } catch (IOException ex) {}
            }                       
        }        
    }


J2ME Home | All J2ME Tutorials | Latest J2ME Tutorials

Sponsored Links

If this tutorial doesn't answer your question, or you have a specific question, just ask an expert here. Post your question to get a direct answer.



Bookmark and Share

Comments(1)


1. View Comment

Great Sample, it helped me alot

Thanks alot


View Tutorial          By: Mike at 2010-03-02 04:39:57

Your name (required):


Your email(required, will not be shown to the public):


Your sites URL (optional):


Your comments:



More Tutorials by Ash
Interview Question: What is the difference between Message Driven Beans and Stateless Session beans?
Interview Question: Is it possible to share an HttpSession between a JSP and EJB? What happens when I change a value in the HttpSession from inside an EJB?
Interview Question: What is the difference between find and select methods in EJB?
Interview Question: What is the difference between JavaBean and EJB?
Interview Question: What is abstract schema?
Interview Question: What is local interface. How values will be passed?
Interview Question: What is Message Driven Bean?
Interview Question: What are the call back methods in Entity bean?
Interview Question: What is deployment descriptor?
Interview Question: How many EJB Objects are created for a Bean?
Interview Question: What is re-entrant. Is session beans reentrant. Is entity beans reentrant?
Interview Question: What is lazy loading?
Interview Question: What is the difference between EAR, JAR and WAR file?
Interview Question: Can i map more than one table in a CMP?
Interview Question: Is Decorator an EJB design pattern?

More Tutorials in J2ME
Code sample to Send SMS from a J2ME application.
Adding your own Application icon for your J2ME application (jar file)
Play a multimedia file in J2ME Program (Audio/Video) using MMAPI
Datagrams in J2ME (UDP Programming sample)
Client Server in J2ME (Socket Programming sample)
Using HttpConnection in J2ME (Retrieve web content from a website to a phone)
Using HTTP vs UDP vs Socket in J2ME
RMSCookieConnector - Using Cookies in J2ME
POST UTF-8 encoded data to the server in J2ME
lists, forms, choices, gauges, text fields, text boxes in J2ME
Using List to create a Menu and Menu items in J2ME
Using alerts and tickers in J2ME
J2ME Canvas sample to show games programming in J2ME
Timer and TimerTask example in J2ME
List of GPRS Access points for all countries

More Latest News
Most Viewed Articles (in J2ME )
Sample Java program shows how to Read a file over a network using J2ME midlet
GUI components and menu based J2ME Applications.
What is J2ME?
Using List to create a Menu and Menu items in J2ME
Code sample to Send SMS from a J2ME application.
Download a file over a network in J2ME midlet
'LINK.EXE' is not recognized as an internal or ext
java.lang.SecurityException: MIDP lifecycle does not support system exit.
RMS Basics in J2ME
POST UTF-8 encoded data to the server in J2ME
Using HttpConnection in J2ME (Retrieve web content from a website to a phone)
Y.S. Sun Green Building Research Center
How to get the CLDC and MIDP version from a J2ME program
Gauge sample program in J2ME
TextBox sample program in J2ME
Most Emailed Articles (in J2ME)
How to load J2ME applications to the IDEN handsets
'LINK.EXE' is not recognized as an internal or ext
Sample Java program shows how to Read a file over a network using J2ME midlet
Y.S. Sun Green Building Research Center
Ticker sample program in J2ME
Image and ImageItem sample program in J2ME
RMS Basics in J2ME
Internationalization Support in J2ME MIDP
lists, forms, choices, gauges, text fields, text boxes in J2ME
Using List to create a Menu and Menu items in J2ME
Download a file over a network in J2ME midlet
Sample J2ME code that shows various functionality of RMS.
J2ME Canvas sample to show games programming in J2ME
Timer and TimerTask example in J2ME
DateField sample program in J2ME