Content-Encoding为gzip的数据解压

Content-Encoding为gzip的数据解压

项目中调用第三方接口,返回的数据乱码,发现是因为Content-Encoding为gzip的原因,记录一下解压方法

       URL url = new URL(path); 
      // 打开和url之间的连接
      HttpURLConnection conn = (HttpURLConnection) url.openConnection();
      // PrintWriter out = null;
      // 请求方式
      conn.setRequestMethod("POST");
      conn.setConnectTimeout(20000);
      conn.setReadTimeout(20000);
      // 设置通用的请求属性
      conn.setRequestProperty("accept", "*/*");
      conn.setRequestProperty("connection", "Keep-Alive");
      conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded;charset=UTF-8");
      conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)");
      InputStream is = conn.getInputStream();
      String contentType = conn.getContentType();
      String contentEncoding = conn.getContentEncoding();
      String result = "";
      if ("gzip".equalsIgnoreCase(contentEncoding)) {
        byte[] b = IOUtils.toByteArray(is);
        ByteArrayInputStream bais = new ByteArrayInputStream(b);
        GZIPInputStream gzis = new GZIPInputStream(bais);
        InputStreamReader reader = new InputStreamReader(gzis);
        BufferedReader in = new BufferedReader(reader);
        String str;
        while ((readed = in.readLine()) != null) {
          result = str;
          System.out.println("str:  " + str);
        }
      }else{
     	 // 构造一个字符流缓存
        BufferedReader br = new BufferedReader(new InputStreamReader(is, "UTF-8"));
        String str;
        while ((str = br.readLine()) != null) {
          result = str;
          System.out.println("str:  " + str);
        }
       }
      // 关闭流
      is.close();
      // 断开连接，最好写上，disconnect是在底层tcp socket链接空闲时才切断。如果正在被其他线程使用就不切断。
      // 固定多线程的话，如果不disconnect，链接会增多，直到收发不出信息。写上disconnect后正常一些。
      conn.disconnect();
      return result;