寫在前面：該文只是開發中的測試DEMO，後期有時間了會繼續總結完善。

package com.keyisoftware.test;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Enumeration;

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

/**
 * Servlet implementation class ParseHttpHeader
 */
public class ParseHttpHeader extends HttpServlet {
	private static final long serialVersionUID = 1L;

	/**
	 * @see HttpServlet#HttpServlet()
	 */
	public ParseHttpHeader() {
		super();
		// TODO Auto-generated constructor stub
	}

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
	 *      response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		response.setContentType("text/html");
		// PrintWriter out=response.getWriter();
		Enumeration e = request.getHeaderNames();
		int i = 0;
		while (e.hasMoreElements()) {
			i++;
			String name = (String) e.nextElement();
			String value = request.getHeader(name);
			System.out.println(name + " = " + value);
		}
		System.out.println("i=" + i);

	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
	 *      response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		doGet(request, response);
	}

	/**
	 * @see HttpServlet#doHead(HttpServletRequest, HttpServletResponse)
	 */
	protected void doHead(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
	}

}