我正在使用下面的代码从服务器获取数据。当数据在服务器上更新时,我从这个方法获得旧数据。当我在网络浏览器中使用相同的方法时,我得到更新的数据。获取缓存的其余数据android
即使当我停止应用程序并重新开始时,它反映了旧数据,但是当我使用任务管理器清理了所有任务后,我得到了新数据。
在设备上被缓存,因为我每个
String response = null;
InputStream inputStream = null;
HttpURLConnection urlConnection = null;
try {
URL url = new URL(urlString);
urlConnection = (HttpURLConnection) url.openConnection();
urlConnection.setReadTimeout(10000);
urlConnection.setConnectTimeout(15000);
if (method == POST) {
urlConnection.setDoInput(true);
urlConnection.setDoOutput(true);
urlConnection.setRequestProperty("Accept", "application/json");
urlConnection.setRequestMethod("POST");
OutputStream os = urlConnection.getOutputStream();
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(os, "UTF-8"));
writer.write(params);
writer.flush();
writer.close();
os.close();
} else {
urlConnection.setRequestMethod("GET");
}
int statusCode = urlConnection.getResponseCode();
/* 200 represents HTTP OK */
if (statusCode == HttpURLConnection.HTTP_OK) {
inputStream = new BufferedInputStream(urlConnection.getInputStream());
response = convertInputStreamToString(inputStream);
return response;
}
我在网上搜索后发现,使用高速缓存默认是开启的,所以这两个行会帮助时间作出新的请求数据
urlConnection.setUseCaches(false);
urlConnection.addRequestProperty("Cache-Control", "no-cache");
appende一些随机获取参数您的网址 – Amy