?? getheaders.java
字號:
package com.chapter5;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;
public class GetHeaders extends HttpServlet
{
public void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException
{
response.setContentType("text/html;charset=gb2312");
PrintWriter out = response.getWriter();
out.println("<html>");
out.println("<head><title>");
out.println("讀取HTTP請求頭實例");
out.println("</title></head>");
out.println("<body><div align=center>");
out.println("<h1>讀取HTTP請求頭</h1>");
out.println("<table width=90% border=1>");
out.println("<tr><th width=20% align=center>請求頭名稱</th>");
out.println("<th width=80% align=center>請求頭對應值</th></tr>");
//獲取所有的請求頭名字
Enumeration eHeaderNames = request.getHeaderNames();
//循環顯示所有請求頭名字和對應值
while(eHeaderNames.hasMoreElements())
{
String sHeaderName = (String)eHeaderNames.nextElement();
out.println("<tr><td>" + sHeaderName + "</td>");
out.println("<td>" + request.getHeader(sHeaderName) + "</td></tr>");
}
out.println("</table></div></body></html>");
}
public void doGet(HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException
{
doPost(request,response);
}
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