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Saturday, May 26, 2012

Write a Servlet which will display all the parameters which are passed to the servlet page.

Write a Servlet which will display all the parameters which are passed to the servlet page.

Hint: The previous page which will send the parameter should implement the method GET and the page should contain one textbox and a button. When the button is clicked the servlet page should get opened and should read the value of the textbox passed as an parameter.

Step 1 : Create Simple HTML Page With Form Elements.

 
<html>
 <head>
  <title>GetParmter Servelt</title>
 </head> 
 <body>
  <form action="http://localhost:8080/GetParameter/GetParameter" method="GET">
   <input type="text" name="txt_value" value="" />
   <input type="Submit" name="btn_value" value="Get Value" />
  </form>
 </body>
</html>

Step 2 : Create Servlet File Which GET Values from this HTML Form.

package pack1;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class GetPara extends HttpServlet
{
          public void doGet(HttpServletRequest request,HttpServletResponse response) throws IOException, ServletException
    {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter(); 
 String getValue = request.getParameter("txt_value");
 out.println(getValue);
    }
}

Step 3 : Create Web.XML File.

<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app>
<servlet>
      <servlet-name>GetParameter</servlet-name>
      <servlet-class>pack1.GetPara</servlet-class>
</servlet>   
<servlet-mapping>
        <servlet-name>GetParameter</servlet-name>
        <url-pattern>/GetParameter</url-pattern>
</servlet-mapping> 
</web-app>

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Saturday, May 26, 2012

Write a Servlet which will display all the parameters which are passed to the servlet page.

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