为什么android HttpURLConnection缓存输入流结果？
我正在尝试获取 xml 文件，但它似乎已被缓存。 这是我的代码：
URL url = new URL("http://delibere.asl3.liguria.it/SVILUPPO/elenco_xml.asp?rand=" + new Random().nextInt()+"&Oggetto=" + text +"&TipoDocumento="+tipoDocumento);
HttpURLConnection urlConn = (HttpURLConnection) url.openConnection();
urlConn.setDefaultUseCaches(false);
urlConn.setAllowUserInteraction(true);
urlConn.setDoInput(true);
urlConn.setDoOutput(true);
urlConn.setUseCaches(false);
urlConn.setRequestMethod("GET");
urlConn.setRequestProperty("Pragma", "no-cache");
urlConn.setRequestProperty("Cache-Control", "no-cache");
urlConn.setRequestProperty("Expires", "-1");
urlConn.setRequestProperty("Content-type", "text/xml");
urlConn.setRequestProperty("Connection","Keep-Alive");
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
InputStream is = new BufferedInputStream(url.openStream());
Document doc = db.parse(is);
doc.getDocumentElement().normalize();
谢谢！
i'm trying to get a xml file but it seems to be cached.
there's my code:
URL url = new URL("http://delibere.asl3.liguria.it/SVILUPPO/elenco_xml.asp?rand=" + new Random().nextInt()+"&Oggetto=" + text +"&TipoDocumento="+tipoDocumento);
HttpURLConnection urlConn = (HttpURLConnection) url.openConnection();
urlConn.setDefaultUseCaches(false);
urlConn.setAllowUserInteraction(true);
urlConn.setDoInput(true);
urlConn.setDoOutput(true);
urlConn.setUseCaches(false);
urlConn.setRequestMethod("GET");
urlConn.setRequestProperty("Pragma", "no-cache");
urlConn.setRequestProperty("Cache-Control", "no-cache");
urlConn.setRequestProperty("Expires", "-1");
urlConn.setRequestProperty("Content-type", "text/xml");
urlConn.setRequestProperty("Connection","Keep-Alive");
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
InputStream is = new BufferedInputStream(url.openStream());
Document doc = db.parse(is);
doc.getDocumentElement().normalize();
thanks!
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您意识到您没有使用
HttpURLConnection，对吧？如果你想使用HttpURLConnection获取InputStream，你需要调用另外，我相信在Android中使用Apache HttpClient来处理此类事情是标准的，因为它是内置的 API 比标准 Java 的东西好得多。
You realize you aren't using your
HttpURLConnection, right? If you want to get theInputStreamusing theHttpURLConnection, you need to callAlso, I believe that it's standard to use Apache HttpClient for this sort of thing with Android, since it's built in and a much better API than the standard Java stuff.
看起来他们有一个有效的 HttpClient 解决方案。 你可以尝试一下，HttpClient 提供了一些更灵活地处理其他问题
It looks like they have a solution with HttpClient that works. You might try it, and HttpClient gives a bit more flexibility with other issues