http调用执行中的资源泄漏

Question

执行此代码时，我将收到以下错误消息。

一个资源是在附加的堆栈跟踪中获得的，但从未释放过。有关避免资源泄漏的信息，请参见java.io.Closeable .：

我无法识别以下代码中的资源泄漏。如果有人指出我到底做错了什么，我会很高兴的。

HttpPost request = new HttpPost(url);
        StringBuilder sb = new StringBuilder();
        StringEntity entity = new StringEntity(jsonString);
        entity.setContentType("application/json;charset=UTF-8");
        entity.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "application/json;charset=UTF-8"));
        request.setHeader("Accept", "application/json");
        request.setEntity(entity);

        HttpResponse response = null;
        DefaultHttpClient httpclient = getHttpClientImpl();

        BufferedReader reader = null;
        InputStream in = null;
        try {
            response = httpclient.execute(request);
            in = response.getEntity().getContent();
            reader = new BufferedReader(new InputStreamReader(in));
            String line = null;
            while ((line = reader.readLine()) != null) {
                sb.append(line);
            }
        } catch (IOException e) {
            e.printStackTrace();
        } catch (Exception se) {
            Log.e("Exception", se + "");
            throw se;
        } finally {
            if (in != null)
                in.close();

            if (reader != null)
                reader.close();

            if (client != null && client.getConnectionManager() != null) {
        client.getConnectionManager().shutdown();
    }
        }
        return sb.toString();

Answer 1

我并不认为该代码存在任何问题，但我建议关闭池中的所有空闲连接。

public abstract void closeIdleConnections (long idletime, TimeUnit tunit)

此外，当DefaultHttpClient没有完全正确配置时，也存在一些已知的问题。我建议使用AndroidHttpClient作为HttpClient接口的实现。请访问下列文件以获得解释：

http://developer.android.com/reference/android/net/http/AndroidHttpClient.html