Android中将输入流转换成String

	public String parseStringFromEntity(InputStream input) throws IllegalStateException, IOException {
		String result = null;
		BufferedReader reader = new BufferedReader(new InputStreamReader(input));
		String line = null;
		StringBuffer sb = new StringBuffer();
		while ((line = reader.readLine()) != null) {
			sb.append(line);
		}
		result = sb.toString();
		return result;
	}