httpclient請求返迴響應體，警示告"Going to buffer response body of large or unknown size"的解決方案

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 通過httpclient類比post請求，接收響應的時候報了這樣一個警告：

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

是由於返回的HTTP頭沒有指定contentLength，或者是contentLength大於上限（預設是1M）；

HttpClient建議使用getResponseBodyAsStream()代替getResponseBody()，可避免getResponseBody()可能帶來的記憶體的耗盡問題。

代碼如下：

public static String postByTextString(String url, String text, String token) {        HttpClient httpClient = new HttpClient();        PostMethod postMethod = new PostMethod(url);        try {            StringRequestEntity entity = new StringRequestEntity(text, "text/plain", Constants.CHARSET_UTF8);            postMethod.setRequestEntity(entity);            postMethod.setRequestHeader("token", token);            httpClient.executeMethod(postMethod);            if (postMethod.getStatusCode() == HttpStatus.SC_OK) {
　　　　　　　　　 // 通過讀流的方式替代getResponseBodyAsString()                InputStream inputStream = postMethod.getResponseBodyAsStream();                BufferedReader br = new BufferedReader(new InputStreamReader(inputStream));                StringBuffer stringBuffer = new StringBuffer();                String str;                while((str = br.readLine()) != null){                    stringBuffer.append(str);                }                String response = new String(stringBuffer);                br.close();　　　　　　　　　 // String response = new String(postMethod.getResponseBodyAsString());                return response;            } else {                return null;            }        } catch (HttpException e) {            e.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        } finally {            postMethod.releaseConnection();        }        return null;

 

httpclient請求返迴響應體，警示告"Going to buffer response body of large or unknown size"的解決方案