package com.gyarmy.demo4;



import java.io.ByteArrayOutputStream;

import java.io.IOException;

import java.io.PrintWriter;

import java.util.zip.GZIPOutputStream;



import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;



public class ZipServlet extends HttpServlet {



	/**

	 * 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 {



		// gzip压缩测试

		String myData = "www.gyarmy.com";

		byte[] bytes = myData.getBytes();

		System.out.println("压缩前:"+bytes.length);

		

		//压缩并输出

		ByteArrayOutputStream bArray = new ByteArrayOutputStream();

		GZIPOutputStream gos = new GZIPOutputStream(bArray);

		gos.write(bytes);

		gos.close(); //写入到输出流

		

		byte[] b = bArray.toByteArray();

		

		//浏览器设置

		response.setHeader("Content-Encoding", "gzip");

		response.setContentLength(b.length);

		//输出

		response.getOutputStream().write(b);

		

		System.out.println("压缩后:"+b.length);

		

		

	}



	/**

	 * 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 {

		doGet(request, response);

	}



}