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Kiran
Variables in a Servlet
1 Answer(s)      4 years and 6 months ago
Posted in : JSP-Servlet


Hi,

I'm using some variables in a servlet1
(which i get from a jsp, like "String x = request.getParameter("xyz");").

the servlet response is a jsp page which after taking some more parameters gets redirected to another servlet2. I want to use same variables(i.e., the value in x) I used in servlet1 in the new one(servlet2). How should i declare inorder to use this way. I know something like session attributes, but donno how to implement it. please help . please let me know the syntax.

Thanks

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June 9, 2010 at 3:13 PM


Hi Friend,

Try the following code:

1)form.jsp:

<form name="form" method="post" action="../Servlet" >
Enter Name:<input type="text" name="textname"><input type="submit" value="submit">
</form>

2)Servlet.java:

import java.io.*;
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class Servlet extends HttpServlet {
public void doPost(HttpServletRequest request, HttpServletResponse response)throws IOException, ServletException{
PrintWriter out = response.getWriter();
String name=request.getParameter("textname");
response.sendRedirect("./modified/action.jsp?name="+name);
}
}

3)action.jsp:

<form name="form" method="post" action="../ServletExample" >
<table>
<tr><td>Enter Address:</td><td><input type="text" name="textaddress"></td></tr>
<tr><td>Enter Email:</td><td><input type="text" name="textemail"></td></tr>
<tr><td>Enter Contact No:</td><td><input type="text" name="textcontact"></td></tr>
<tr><td><input type="submit" value="submit"></td></tr>
</table>
<input type="hidden" name="textname" value="<%=request.getParameter("name")%>">
</form>

4)ServletExample.java:

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class ServletExample extends HttpServlet{
public void doPost(HttpServletRequest req,HttpServletResponse res)throws ServletException,IOException{
PrintWriter out=res.getWriter();
String name=req.getParameter("textname");
String address=req.getParameter("textaddress");
String email=req.getParameter("textemail");
String contact=req.getParameter("textcontact");
out.println(name+" "+address+" "+email+" "+contact);
}
}

Hope that it will be helpful for you.
Thanks


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