Re: Java serialization over network

From:
Nilshan <nilshan77@gmail.com>
Newsgroups:
comp.lang.java.programmer
Date:
Wed, 22 Apr 2009 23:01:38 -0700 (PDT)
Message-ID:
<59815cb8-7706-4bf8-b795-3d6bf8ff41e0@s1g2000prd.googlegroups.com>
On Apr 2, 6:49 am, elbaid <elbaid_...@hotmail.com> wrote:

Just want to know if there's a tutorial or an how-to for serializing
object, put it in a stream over network, and deserialize it on the
other point. I understand the principles of serialization, I/O,
streams, sockets and so on, just want an example (client sending object
to a server) to start with.

Thank you.


---------------------------------------------------------------------------=
--

1. Example class to be serialized.

public class RuleInfo implements Serializable
{

    private String data="";

    public RuleInfo() {
    }

    public String getData() {
        return data;
    }

    public void setData(String data) {
        this.data = data;
    }

}

2. User servlet to serialize...

 protected void processRequest(HttpServletRequest request,
HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");

        try {
            RuleInfo info = new RuleInfo();
            info.setData("1");

            RuleInfo info1 = new RuleInfo();
            info1.setData("2");

            List<RuleInfo> list = new ArrayList<RuleInfo>();
            list.add(info);
            list.add(info1);

            ObjectOutputStream out1 = new ObjectOutputStream
(response.getOutputStream());
            out1.writeObject(list);
            out1.flush();
            out1.close();

            System.out.println("This is done");

        } finally {
        }
    }

3. Get Serialized Object at another place using ..

public void test() throws ClassNotFoundException
    {

        String urlString = "http://localhost:8084/WebApplication1/
BinaryPkgServlet";

        try
        {
            InputStream stream = null;
            URL url = new URL(urlString);

            HttpURLConnection httpURLConnection = (HttpURLConnection)
url.openConnection();

            /**
             * If Response Code is 200 [OK] then get InputStream of
             * Compiled binary Package remotely and store in local
file
             * system.
             */

            int httpResponseCode = httpURLConnection.getResponseCode
();

            if (httpResponseCode == 200)
            {
                stream = httpURLConnection.getInputStream();

                ObjectInputStream st = new ObjectInputStream(stream);
                List<RuleInfo> list = (List<RuleInfo>)st.readObject();

                System.out.println("List "+list +"and size "+list.size
());

                for(RuleInfo info : list){
                 System.out.println("Info "+info.getData());
                }
            }

        }
        catch (IOException e)
        {
        }

    }

Thanks,
Nilshan.

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