Hi,
I have a applet and servlet in browser.
When I click applet's OK button, I want to send info from applet to
servlet and also reload my servlet.
When I tried, it executing the code but not refreshing.
It it will be great if u tell ans.
If u know anyother way or URL let me know.
I included the code also.
Thanx.
-----------------------------------------------------------
MainRefresh.html
<html>
<head><title>Main Page </title></head>
<frameset rows="28%,72%">
<frame src="TestRefreshApplet.html" name="index" marginwidth="1"
marginheight="1" scrolling="no">
<frame src="startRefreshServlet.html" name="index" marginwidth="1"
marginheight="1">
<noframes>
To view this web page, you must use Internet Explorer 3.0 or greater.
</noframes>
</frameset></html>
---------------------------------------------------------------
TestRefreshApplet.html
<HTML><HEAD>
<TITLE>HTML Test Page</TITLE></HEAD>
<BODY>
<APPLET
CODE = "TestRefreshApplet.class"
CODEBASE = "." WIDTH=400 HEIGHT=300 HSPACE=0 VSPACE=0 ALIGN=middle>
</APPLET></BODY></HTML>
---------------------------------------------------------------------
startRefreshServlet.html
<HTML><HEAD><TITLE>Login Area</TITLE></HEAD>
<BODY BGCOLOR="#FFCC99">
<center>
<h1>Login</h1>
<form name="frm_Login" method="get" action="http://mymachine/servlet/RefreshServlet">
UserId: <Input type="text" name="userId" size="20"><br>
User name:<Input type="text" name="userName" size="20" ><br>
<input type="submit" name="btn_Submit" value="Submit">
</form>
</center></Body></html>
-------------------------------------------------------------------------
RefreshServlet.java
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class RefreshServlet extends HttpServlet {
private static int pageNum = 0;
public void init(ServletConfig config) throws ServletException {
super.init(config);
}
public void doGet(HttpServletRequest req, HttpServletResponse res) throws
ServletException, IOException {
res.setContentType("text/html");
PrintWriter out = new PrintWriter(res.getOutputStream());
out.println("<html>");
out.println("<head><title> doGet </title><head>");
out.println("<body>");
pageNum++;
out.println("U r visiting page number " + pageNum);
out.println("<br> Thanx ...");
out.println("</body> </html>");
out.close();
System.out.println("RefreshServlet: doGet() pagenum="+pageNum);
} // doGet()
//Process the HTTP Post request
public void doPost(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = new PrintWriter (response.getOutputStream());
System.out.println("RefreshServlet: doPost");
try {
ObjectInputStream in = new ObjectInputStream(request.getInputStream());
String str = (String)in.readObject();
System.out.println("doPost: response from applet="+str);
in.close();
} catch(Exception e) { System.out.println("Exception ="+e); }
// response.sendRedirect("http://95.33.13.30/servlet/RefreshServlet);
// doGet(request, response);
out.println("<html>");
out.println("<head><title> doPost </title><head>");
out.println("<body>");
pageNum++;
out.println("U r visiting page number " + pageNum);
out.println("<br> Thanx ...");
out.println("</body> </html>");
System.out.println("Redirected");
out.close();
} // doPost()
}
-----------------------------------------------------------------------
TestRefreshApplet.html
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.net.*;
import java.io.*;
public class TestRefreshApplet extends Applet implements Runnable {
public static boolean staticVar = false;
Thread thread;
Button ok;
//Construct the applet
public TestRefreshApplet() {
System.out.println("TestRefreshApplet: constructor");
this.setLayout(new BorderLayout());
ok = new Button("OK");
ok.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
System.out.println("ok.");
staticVar = true;
}
});
this.add(ok, BorderLayout.NORTH);
show();
} // constructor
public void start() {
System.out.println("TestRefreshApplet: start()");
if ( thread == null ) {
thread = new Thread(this);
thread.start();
} // if
} // start()
public void stop() {
if ( thread != null ) {
thread.stop();
thread = null;
} // if
} // stop()
public void run() {
System.out.println("TestRefreshApplet: Run()");
while ( true ) {
try {
if ( staticVar == true ) {
System.out.println("TestRefreshApplet: var is true. so start refresh");
String urlStr = "http://mymachine:80/servlet/RefreshServlet";
URL servletURL = new URL(urlStr);
System.out.println("File="+servletURL.getFile());
System.out.println("Host="+servletURL.getHost());
System.out.println("Port="+servletURL.getPort());
System.out.println("Protocol"+servletURL.getProtocol());
String str =
servletURL.getProtocol()+"://"+servletURL.getHost()+":"+servletURL.getPort()+servletURL.getFile();
System.out.println("URL="+str);
URL u = new URL(str);
URLConnection servletConn = u.openConnection();
servletConn.setDoOutput(true);
servletConn.setDoInput(true);
servletConn.setUseCaches(false);
servletConn.setDefaultUseCaches(false);
servletConn.setRequestProperty("Content-Type", "application/octet-stream");
ObjectOutputStream out = new ObjectOutputStream(servletConn.getOutputStream());
out.writeObject("Hai from applet to servlet");
out.flush();
out.close();
staticVar = false;
System.out.println("TestRefreshApplet: Sent to Servlet");
} // if
} catch(MalformedURLException me) {
System.out.println("Ex="+me.getMessage()+"\ne="+me);
staticVar = false;}
catch(IOException ioe) {
System.out.println("Ex=="+ioe.getMessage()+"\n e=="+ioe);
staticVar = false; }
try { Thread.sleep(2000); } catch(InterruptedException io) { }
} // while
} // run()
} // End Of Class TestRefreshApplet
------------------------------------------------------------------------
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