HttpServletRequestgetParameter("username")取username值知道頁面表單項name表單資訊用getParameterNames

package lintex;

import javax.servlet.*;

import javax.servlet.http.*;

import java.io.*;

import java.util.*;

public class sss extends HttpServlet

{

public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException

{

response.setContentType("text/html;charset=gbk");

PrintWriter out = response.getWriter();

out.println("<form action=\"/getParameterNames/x\" method=post>使用者名稱：<INPUT TYPE=text NAME=username>password：<INPUT TYPE=text NAME=password>Email：<INPUT TYPE=text NAME=email><INPUT TYPE=submit></form>");

}

public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException

{

PrintWriter out = response.getWriter();

String name;

Enumeration test=request.getParameterNames();

while(test.hasMoreElements())

{

name=(String)test.nextElement();

out.println(name+"="+request.getParameter(name));

out.println("<br>");

}

out.println();

}

}

使用Enumeration需要匯入util包