Question

我的代码如下从url下载xml内容，这需要更多时间在wifi网络下载，我的xml只有29.2kb。我正在使用AsyncTask。

InputStream getInputStreamForUrl(String url) {
        BufferedHttpEntity bufferedEntity = null;
        InputStream is = null;
        try {
            bufferedEntity = download(url);
            if (bufferedEntity != null) {
                is = bufferedEntity.getContent();
                if (is != null) {
                    BufferedReader feedReader = new BufferedReader(new InputStreamReader(is, Utility.UTF_ENCODING),
                            16 * 1024);
                    Utility.cacheFeed(feedReader, url);
                }
            }
        } catch (NetworkNotAccessable e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            try {
                if (bufferedEntity != null) {
                    bufferedEntity.consumeContent();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return (url != null) ? Utility.getInputStreamForCache(url) : null;
    }

下载（url）方法我使用HttpGet请求如下：

public BufferedHttpEntity download(String url)
            throws ClientProtocolException, IOException, 
                    IllegalStateException, NetworkNotAccessable {
        HttpGet get = new HttpGet(url);
        HttpResponse response = mDefaultHttpClient.execute(get);
        int status = response.getStatusLine().getStatusCode();
        if (status != 200) {
            throw new NetworkNotAccessable(url + "error code:" + status);
        }   
        HttpEntity entity = response.getEntity();           
        BufferedHttpEntity bufHttpEntity = new BufferedHttpEntity(entity);      

        while (bufHttpEntity.isStreaming()) {
            try {
                bufHttpEntity.wait(500);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        return bufHttpEntity;
    }

请告诉我有没有最好的方法来压缩整个网址并下载它。

Answer 1

如果您说实际下载发生在＆＃39; download（url）＆＃39;方法然后我恐怕我看不到这种情况，也从getInputStream方法调用下载方法，你输入的输入流不能看到任何原因......

另外你为什么要使用bufHttpEntity.wait（500）;这是阻塞状态（可能导致重大延迟）

在下载方法中使用以下代码来检索xml：

    URL url = new URL(url);
       HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
       try {
         InputStream in = new BufferedInputStream(urlConnection.getInputStream());
         byte buffer[] = new byte[4096];

         int count;
         String xmlData = "";
         while( (count = in.read(buffer)) != -1){
           xmlData += new String(buffer, 0, count);
       } finally {
         urlConnection.disconnect();
       }


             Log.d(TAG, " Data: " + xmlData );

从URL下载xml作为Inputstream的最佳方法

1 个答案: