java azure存储错误“枚举结果" [英] java azure storage error "enumerating the result"
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问题描述
我正在使用以下代码使用android azure存储API:
I'm consuming the android azure storage API with the following code:
try
{
// Retrieve storage account from connection-string.
CloudStorageAccount storageAccount = CloudStorageAccount.parse(storageConnectionString);
// Create the blob client.
CloudBlobClient blobClient = storageAccount.createCloudBlobClient();
// Retrieve reference to a previously created container.
CloudBlobContainer container = blobClient.getContainerReference("appstar");
// Loop over blobs within the container and output the URI to each of them.
for (ListBlobItem blobItem : container.listBlobs()) {
System.out.println(blobItem.getUri());
}
// hide dat loader
progress.dismiss();
}
catch (Exception e)
{
System.out.println("There was a problem");
// Output the stack trace.
e.printStackTrace();
// hide dat loader
progress.dismiss();
}
但是当我进入for循环时，出现以下错误:
but when I get to the for loop, I get the following error:
07-23 12:30:46.371 2362-2362/com.k.azurestorage W/System.err﹕ java.util.NoSuchElementException: An error occurred while enumerating the result, check the original exception for details.
07-23 12:30:46.371 2362-2362/com.k.azurestorage W/System.err﹕ at com.microsoft.azure.storage.core.LazySegmentedIterator.hasNext(LazySegmentedIterator.java:113)
07-23 12:30:46.371 2362-2362/com.k.azurestorage W/System.err﹕ at com.k.azurestorage.ConnectionSettingsForm.btn_onCreateSubmitted(ConnectionSettingsForm.java:127)
07-23 12:30:46.371 2362-2362/com.k.azurestorage W/System.err﹕ at java.lang.reflect.Method.invoke(Native Method)
07-23 12:30:46.371 2362-2362/com.k.azurestorage W/System.err﹕ at java.lang.reflect.Method.invoke(Method.java:372)
07-23 12:30:46.371 2362-2362/com.k.azurestorage W/System.err﹕ at android.view.View$1.onClick(View.java:4015)
07-23 12:30:46.371 2362-2362/com.k.azurestorage W/System.err﹕ at android.view.View.performClick(View.java:4780)
07-23 12:30:46.371 2362-2362/com.k.azurestorage W/System.err﹕ at android.view.View$PerformClick.run(View.java:19866)
07-23 12:30:46.371 2362-2362/com.k.azurestorage W/System.err﹕ at android.os.Handler.handleCallback(Handler.java:739)
07-23 12:30:46.372 2362-2362/com.k.azurestorage W/System.err﹕ at android.os.Handler.dispatchMessage(Handler.java:95)
07-23 12:30:46.372 2362-2362/com.k.azurestorage W/System.err﹕ at android.os.Looper.loop(Looper.java:135)
07-23 12:30:46.372 2362-2362/com.k.azurestorage W/System.err﹕ at android.app.ActivityThread.main(ActivityThread.java:5257)
07-23 12:30:46.372 2362-2362/com.k.azurestorage W/System.err﹕ at java.lang.reflect.Method.invoke(Native Method)
07-23 12:30:46.372 2362-2362/com.k.azurestorage W/System.err﹕ at java.lang.reflect.Method.invoke(Method.java:372)
07-23 12:30:46.372 2362-2362/com.k.azurestorage W/System.err﹕ at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
07-23 12:30:46.372 2362-2362/com.k.azurestorage W/System.err﹕ at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
07-23 12:30:46.372 2362-2362/com.k.azurestorage W/System.err﹕ Caused by: com.microsoft.azure.storage.StorageException: Network operations may not be performed on the main thread.
07-23 12:30:46.372 2362-2362/com.k.azurestorage W/System.err﹕ at com.microsoft.azure.storage.core.ExecutionEngine.executeWithRetry(ExecutionEngine.java:224)
07-23 12:30:46.372 2362-2362/com.k.azurestorage W/System.err﹕ at com.microsoft.azure.storage.core.LazySegmentedIterator.hasNext(LazySegmentedIterator.java:109)
07-23 12:30:46.372 2362-2362/com.k.azurestorage W/System.err﹕ ... 14 more
07-23 12:30:46.372 2362-2362/com.k.azurestorage W/System.err﹕ Caused by: android.os.NetworkOnMainThreadException
07-23 12:30:46.372 2362-2362/com.k.azurestorage W/System.err﹕ at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1147)
07-23 12:30:46.372 2362-2362/com.k.azurestorage W/System.err﹕ at java.net.InetAddress.lookupHostByName(InetAddress.java:418)
07-23 12:30:46.372 2362-2362/com.k.azurestorage W/System.err﹕ at java.net.InetAddress.getAllByNameImpl(InetAddress.java:252)
07-23 12:30:46.372 2362-2362/com.k.azurestorage W/System.err﹕ at java.net.InetAddress.getAllByName(InetAddress.java:215)
07-23 12:30:46.372 2362-2362/com.k.azurestorage W/System.err﹕ at com.android.okhttp.HostResolver$1.getAllByName(HostResolver.java:29)
07-23 12:30:46.372 2362-2362/com.k.azurestorage W/System.err﹕ at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:232)
07-23 12:30:46.382 2362-2362/com.k.azurestorage W/System.err﹕ at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:124)
07-23 12:30:46.393 2362-2362/com.k.azurestorage W/System.err﹕ at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:272)
07-23 12:30:46.393 2362-2362/com.k.azurestorage W/System.err﹕ at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:211)
07-23 12:30:46.393 2362-2362/com.k.azurestorage W/System.err﹕ at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:382)
07-23 12:30:46.393 2362-2362/com.k.azurestorage W/System.err﹕ at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:332)
07-23 12:30:46.393 2362-2362/com.k.azurestorage W/System.err﹕ at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:500)
07-23 12:30:46.393 2362-2362/com.k.azurestorage W/System.err﹕ at com.microsoft.azure.storage.core.ExecutionEngine.executeWithRetry(ExecutionEngine.java:125)
07-23 12:30:46.393 2362-2362/com.k.azurestorage W/System.err﹕ ... 15 more
有什么想法吗?
推荐答案
首先，让我们检查一下容易引起奇怪错误的基础知识. :)
First things first, lets check off the basics that tend to cause odd errors. :)
- Could you confirm you're using the Android library and not the Java library?
- Could you confirm you have internet permissions in your Android manifest? See our samples for an example.
如果这些都不是您的问题，那么您可以执行以下操作吗?
If neither of these are your issues, then could you do the following?
- 发布完整的异常跟踪.可迭代的API要求我们返回NoSuchElementException，因此我们将异常实际发生的原因包装在其中.完整的堆栈跟踪应该可以为我们提供进一步调试所需的内容.
- 发布您正在使用的Android库的版本以及正在运行的Android的版本.根据更改日志，我们遇到了一些与Android相关的错误过去的可迭代对象，这可以让我们确认您没有遇到这些对象.
- Post the full exception trace. The iterable API requires us to return a NoSuchElementException, so we wrap the reason the exception actually occurred into that. The full stack trace should give us what we need to debug further.
- Post the version of the Android library you're using and the version of Android you're running on. Per the changelog we've had some Android bugs relating to iterables in the past and this will let us confirm you're not hitting those.
将调试步骤留给其他人使用，但是在这里完整的堆栈跟踪可以给出答案.在完整的跟踪跟踪中，您可以看到NetworkOnMainThreadException并显示消息可能不会在主线程上执行网络操作".由于网络操作可能很慢，因此Android默认情况下会阻止它们在主线程上进行.如果您搜索此错误，则会发现许多示例，这些示例说明了如何使用网络操作而不阻塞UI线程.
Leaving the debugging steps for others, but here the full stack trace gives the answer. In the full strack trace you can see a NetworkOnMainThreadException with the message 'Network operations may not be performed on the main thread.' Because network operations can be slow, Android prevents them from being made on the main thread by default. If you search this error you'll find a variety of examples on how to work with network operations without blocking the UI thread.
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