http请求解压,解压方法

解压：

public static String analyzeGetGzip(String url,String param) throws Exception{
		String result = "";
        BufferedReader in = null;
        try {
            String urlNameString = url + "?" + param;
            URL realUrl = new URL(urlNameString);
            // 打开和URL之间的连接
            URLConnection connection = realUrl.openConnection();
            // 设置通用的请求属性
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("Pragma", "no-cache");
            connection.setConnectTimeout(5000);
            // 建立实际的连接
            connection.connect();
            // 获取所有响应头字段
            Map<String, List<String>> map = connection.getHeaderFields();
            InputStream urlStream = new GZIPInputStream(connection.getInputStream());
            // 定义 BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(urlStream));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
        	e.printStackTrace();
        } finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
        return result;
	}

压缩方法：

public static void responseXmlWithGzip(HttpServletResponse response, String docXML){
       
		try {
		       ByteArrayOutputStream bout = new ByteArrayOutputStream();   
		       GZIPOutputStream gzip = new GZIPOutputStream(bout);   
		       gzip.write(docXML.getBytes("UTF-8"));   
		       gzip.flush();   
		       gzip.close();   
		       byte[] buf = bout.toByteArray();    
	           
		         
		    //服务器传回数据的类型和长度   
			response.setHeader("Cache-Control", "no-cache");
			response.setHeader("Content-Encoding","gzip");
			response.setHeader("Content_Length",buf.length+"");  
			response.getOutputStream().write(buf);
			
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}   
	}