import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;
public class MyServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, java.io.IOException {
System.out.println("command: "+request.getParameter("command"));
response.setContentType("text/html");
java.io.PrintWriter out = response.getWriter();
out.println("<html><head>");
out.println("<title>Help Page</title></head><body>");
out.println("<h2>Please submit your information</h2>");
out.println("<form method=\"post\" action =\"" + request.getContextPath() +"/MyServlet\" >");
out.println("<table border=\"0\"><tr><td valign=\"top\">");
out.println("Your first name: </td> <td valign=\"top\">");
out.println("<input type=\"text\" name=\"firstname\" size=\"20\">");
out.println("</td></tr><tr><td valign=\"top\">");
out.println("Your last name: </td> <td valign=\"top\">");
out.println("<input type=\"text\" name=\"lastname\" size=\"20\">");
out.println("</td></tr><tr><td valign=\"top\">");
out.println("Your email: </td> <td valign=\"top\">");
out.println("<input type=\"text\" name=\"email\" size=\"20\">");
out.println("</td></tr><tr><td valign=\"top\">");
out.println("<input type=\"submit\" value=\"Submit Info\"></td></tr>");
out.println("</table></form>");
out.println("</body></html>");
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException,java.io.IOException{
Enumeration paramNames = request.getParameterNames();
String parName;
boolean emptyEnum = false;
if (! paramNames.hasMoreElements())
emptyEnum = true;
response.setContentType("text/html");
java.io.PrintWriter out = response.getWriter();
out.println("<html><head>");
out.println("<title>Submitted Parameters</title></head><body>");
if (emptyEnum){
out.println("<h2>Sorry, the request does not contain any parameters</h2>");
} else {
out.println("<h2>Here are the submitted parameter values</h2>");
}
while(paramNames.hasMoreElements()){
parName = (String) paramNames.nextElement();
out.println("<strong>" + parName + "</strong> : " + request.getParameter(parName));
out.println("<br />");
}
out.println("</body></html>");
}
}
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN"
"http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
<web-app>
<servlet><servlet-name>MyServletName</servlet-name>
<servlet-class>MyServlet</servlet-class>
</servlet>
<servlet-mapping><servlet-name>MyServletName</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
</web-app>
Download: ServletPostFormDataToSelfServlet.zip( 90 k)