【发布时间】:2019-04-04 21:55:57
【问题描述】:
我正在使用 Java 开发一个 azure 函数。我需要迭代以下文件夹中的所有文件
aDirectory/aSubdirectoryWithManyFiles/
该路径中有很多文件,:
aDirectory/aSubdirectoryWithManyFiles/file1
aDirectory/aSubdirectoryWithManyFiles/file2
aDirectory/aSubdirectoryWithManyFiles/file3
aDirectory/aSubdirectoryWithManyFiles/file4
aDirectory/aSubdirectoryWithManyFiles/file5
所以我写了以下代码来获取它们:
// myCloudBlobContainer is a CloudBlobContainer
// I expected to get all files thanks to the next row
Iterable<ListBlobItem> blobs = myCloudBlobContainer.listBlobs();
// The only blob found in the container is the directory itself
for (ListBlobItem blob : blobs) {
//log the current blob URI
if (blob instanceof CloudBlob) { // this never happens
CloudBlob cloudBlob = (CloudBlob) blob;
//make nice things with every found file
}
}
在for 中迭代的唯一 blob 是目录,没有预期的文件。所以在日志中我只得到以下 URI:
https://blablablabla.blob.core.windows.net/aDirectory/aSubdirectoryWithManyFiles/
我应该怎么做才能访问每个文件?
如果我有多个子目录,如下例所示?
aDirectory/aSubdirectoryWithManyFiles/files(1-5)
aDirectory/anotherSubdirectoryWithManyFiles/files(6-10)
提前致谢
编辑
为了使方法可测试,项目使用包装器和接口,而不是直接使用 CloudBlobContainer;基本上,CloudBlobContainer 由CloudBlobClient.getContainerReference("containername") 给出
在回答完这个问题后,我将代码更改为以下
所以我使用了带有参数myCloudBlobContainer.listBlobs("aDirectory", true) 的listBlobs,我编写了以下代码来获取它们:
// myCloudBlobClient is a CloudBlobClient
CloudBlobContainer myCloudBlobContainer = myCloudBlobClient.getContainerReference("containername")
// I expected to get all files thanks to the next row
Iterable<ListBlobItem> blobs = myCloudBlobContainer.listBlobs("aDirectory", true); // HERE THE CHANGE
// No blob found this time
for (ListBlobItem blob : blobs) { // NEVER IN THE FOR
//log the current blob URI
if (blob instanceof CloudBlob) {
CloudBlob cloudBlob = (CloudBlob) blob;
//make nice things with every found file
}
}
但是这一次,for 里根本就不行了...
【问题讨论】:
标签: java azure azure-blob-storage