httpclient 在获取返回值时，使用getResponseBodyAsString触发警告

使用httpclient通过postmethod对象获取返回值，在使用getResonseBodyAsString方法时会出现一个警告：

org.apache.commons.httpclient.HttpMethodBase getResponseBody
警告: Going to buffer response body of large or unknown size. Using getResponseBodyAsStream instead is recommended.

可以通过如下方式解决：

BufferedReader reader = new BufferedReader(new InputStreamReader(method.getResponseBodyAsStream()));  

StringBuffer stringBuffer = new StringBuffer();  

String str = "";  

while((str = reader.readLine())!=null){  

   stringBuffer.append(str);  

}  

String ts = stringBuffer.toString();