📄 requestinfo.java
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package com;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class RequestInfo extends HttpServlet {
/**
* Constructor of the object.
*/
public RequestInfo() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
PrintWriter out=response.getWriter();
String s;
//getMethod
s="<br><b>request.getMethod():</b>"+ request.getMethod();
out.print(s);
//getRequestURI
s="<br><b>request.getRequestURI():</b>"+ request.getRequestURI();
out.print(s);
//getProtocol
s="<br><b>request.getProtocol():</b>"+ request.getProtocol();
out.print(s);
//getParameter
s="<br><b>request.getParameter(\"a\"):</b>"+ request.getParameter("a");
out.print(s);
s="<br><b>request.getParameter(\"b\"):</b>"+ request.getParameter("b");
out.print(s);
//getQueryString
s="<br><b>request.getQueryString():</b>"+ request.getQueryString();
out.print(s);
//getHeaders
java.util.Enumeration e=request.getHeaderNames();
while(e.hasMoreElements())
{
String headerName=(String)e.nextElement();
String headerValue=request.getHeader(headerName);
out.print("<br><b>"+headerName+"</b> ");
out.print("------ " + headerValue);
}
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out
.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
out.print(" This is ");
out.print(this.getClass());
out.println(", using the POST method");
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occure
*/
public void init() throws ServletException {
// Put your code here
}
}
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