chunked编码解码实现

TransferEncoding.java是chunked编码解码实现java代码

import java.io.BufferedReader;

import java.io.ByteArrayInputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.OutputStreamWriter;

import java.io.UnsupportedEncodingException;

import java.net.InetAddress;

import java.net.Socket;

import java.net.UnknownHostException;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import java.util.zip.GZIPInputStream;

public class TransferEncoding {

private static String encoding = "UTF-8";

public static void main(String[] args) {

        try {  

            Socket socket = new Socket(InetAddress.getByName("www.iteye.com"), 80);  

            socket.setSoTimeout(10000); // 10秒钟超时。 

            OutputStreamWriter osw = new OutputStreamWriter(socket.getOutputStream());  

            StringBuffer sb = new StringBuffer();  

            sb.append("GET / HTTP/1.1\r\n");  

            sb.append("Accept: image/png, image/svg+xml, image/*;q=0.8, */*;q=0.5\r\n");  

            sb.append("X-HttpWatch-RID: 18613-10702\r\n");  

            sb.append("Referer: http://www.cnblogs.com/haitao-fan/archive/2013/01/18/2866994.html\r\n");  

            sb.append("Accept-Language: zh-CN\r\n");  

            sb.append("User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko\r\n");  

            sb.append("Accept-Encoding: gzip, deflate\r\n");  

            sb.append("Host: www.iteye.com\r\n");  

            sb.append("Connection: Keep-Alive\r\n");

            sb.append("DNT: 1\r\n");

            //注，这是关键的关键，忘了这里让我搞了半个小时。这里一定要一个回车换行，表示消息头完，不然服务器会等待  

            sb.append("\r\n");  

            osw.write(sb.toString());  

            osw.flush();  

            //--输出服务器传回的消息的头信息  

            InputStream is = socket.getInputStream();

            boolean isGzip = false;

            // 读取所有服务器发送过来的请求参数头部信息  

            String header = readHeader(is);

            System.out.println(header);

            // 返回的数据类型，是否是gzip压缩的格式

            String acceptEncoding = getHeaderValue(header, "Content-Encoding");

            if (acceptEncoding.startsWith("gzip")) {

        isGzip = true;