httpclient读取inputstream源

httpclient读取inputstream流

public static String getString(InputStream is, String charset) {String str = null;if (is == null) {return str;}StringBuffer sb = new StringBuffer();try {BufferedReader br = new BufferedReader(new InputStreamReader(is,charset));            char buffer[] = new char[4096];            int len;            while((len = br.read(buffer)) > 0)             sb.append(new String(buffer, 0, len));} catch (UnsupportedEncodingException e1) {e1.printStackTrace();} catch (IOException e) {e.printStackTrace();}str = sb.toString();return str;}