connect between the android application to struts2.0

Question

hi

I am new to android development. how to get the data from the struts application database. I want list out the records from the server database to android.

reply me quickly

Answer 1

just expose a rest, or similar api from your struts application, you can then use this api via android to retrieve the data you want.

Answer 2

Use This code to send data from your android to struts2 action and get the result back

package MY PACKAGE;

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;



public class AndroidClient{

    private URL m_cURL = null;
    private HttpURLConnection m_cConn = null;




  public void connectToServer(){
        try {
            m_cURL = new URL("http://YOURIP:8084/MyAction");
            if(null == m_cConn){
                m_cConn = (HttpURLConnection) m_cURL.openConnection();
                m_cConn.setDoOutput(true);
                m_cConn.setDoInput(true);
            }
        }catch (Exception e) {
            System.out.println("Connection Error::"+e);
        }
    }

    public String fetchUserDetails(String userID){
        DataOutputStream dos = null;
        InputStream is = null;
        String responseUserDetails = null;
        try {
            connectToServer();

            String uID="yourId";
            dos = new DataOutputStream(m_cConn.getOutputStream());
            dos.write(uID.getBytes(), 0, uID.getBytes().length);

            is = m_cConn.getInputStream();
            StringBuilder sb = new StringBuilder();
            String line;

            BufferedReader reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));
            while ((line = reader.readLine()) != null) {
                sb.append(line);
            }
            responseUserDetails = sb.toString();
            System.out.println("Response Text(Fetch): " + responseUserDetails);

        } catch (Exception e) {
            return responseUserDetails;
        } finally{
                try{
                    if (is != null) 
                        is.close(); 
                    if (dos != null){
                        dos.flush();    
                        dos.close();
                    }
                    disconnectServer();
                }catch(Exception pEx){
                    System.out.println(pEx.toString());
                return responseUserDetails;
            }
        }
        return responseUserDetails;
    }

    public void disconnectServer(){
        try {
            m_cConn.disconnect();
            m_cConn = null;
        }catch (Exception e) {
            System.out.println("Connection Error::"+e);
        }
    }
}