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Servlet program to read POST Data

Servlet program to read POST Data


in order to pass a post parameter we need a html form consider the following html page:

<pre class="prettyprint">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Post parameter </title>
</head>
<body>
<b>Servlet Post</b>
<form method="post" action="PostTest">   
 //Her the action redirect to the servlet path
<input type="text" name="uname" />
<input type="submit" value="Enter" >
</form>
</body>
</html>

</pre>

Servlet code would be looks like this:


package servlets.first;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class PostTest
 */
@WebServlet("/PostTest")
public class PostTest extends HttpServlet {
    private static final long serialVersionUID = 1L;
      
    /**
     * @see HttpServlet#HttpServlet()
     */
    public PostTest() {
        super();
        // TODO Auto-generated constructor stub
    }
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
           String uname;
           response.setContentType("text/html");
           PrintWriter out= response.getWriter();
           uname= request.getParameter("uname");             
           out.println("<B>Uname:" +uname +"</B>");
    }

}


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