解决WARN警告：Going to buffer response body of large or unknown size. Using getResponseBodyAsStream instead is recommended

使用Apache HttpClient发送请求，有大量WARN警告：Going to buffer response body of large or unknown size. Using getResponseBodyAsStream instead is recommended

            //returnBody = method.getResponseBodyAsString();
            InputStream inputStream = method.getResponseBodyAsStream();
            BufferedReader br = new BufferedReader(new InputStreamReader(inputStream));
            StringBuffer stringBuffer = new StringBuffer();
            String str = "";
            while ((str = br.readLine()) != null) {
                stringBuffer.append(str);
            }
            returnBody=stringBuffer.toString();