Question

我使用此代码将文件上传到azure blob存储，但是当我尝试加载带有子目录的目录时，出现错误“遇到FileNotFoundException：C：\ upload \ bin” ：（访问被拒绝）是任何解决方案在源目录中加载文件和目录？

try {
        CloudStorageAccount account = CloudStorageAccount.parse(storageConnectionString);
        CloudBlobClient serviceClient = account.createCloudBlobClient();

        // Container name must be lower case.
        CloudBlobContainer container = serviceClient.getContainerReference(containerName);
        container.createIfNotExists();
        File source = new File(path);
        if (source.list().length > 0) {
            for (File file : source.listFiles()) {
                CloudBlockBlob blob = container.getBlockBlobReference(file.getName());
                if (blob.exists() == false) {
                    File sourceFile = new File(source + "\\" + file.getName());
                    blob.upload(new FileInputStream(sourceFile), sourceFile.length());
                    System.out.println("File " + source + "\\" + file.getName() + " Load to blob storage");
                } else System.out.println("File " + source + "\\" + file.getName() + " Already exist in storage");
            }
        } else System.out.println("In folder " + path + " are no files ");
    } catch (FileNotFoundException fileNotFoundException) {
        System.out.print("FileNotFoundException encountered: ");
        System.out.println(fileNotFoundException.getMessage());
        System.exit(-1);

    } catch (StorageException storageException) {
        System.out.print("StorageException encountered: ");
        System.out.println(storageException.getMessage());
        System.exit(-1);
    } catch (Exception e) {
        System.out.print("Exception encountered: ");
        System.out.println(e.getMessage());
        System.exit(-1);
    }

Answer 1

正如@ ZhaoxingLu-Microsoft所说，由file生成的source.listFiles()对象足以通过file.getAbsolutePath()获取绝对文件路径，因此您可以编写如下代码。

if (blob.exists() == false) {
    blob.uploadFromFile(file.getAbsolutePath());
} else System.out.println("File " + file.getAbsolutePath() + " Already exist in storage");

我在我的环境中测试您的代码，它也可以工作。但是，根据我的经验，您的问题FileNotFoundException encountered: C:\upload\bin" :(Access is denied)是由于缺乏访问C:或C:\upload\bin下的文件的权限引起的。因此，您需要在当前Windows环境中以管理员身份运行代码，如下图。

图1.如果使用IntelliJ，请以管理员身份运行代码

图2.如果使用Eclipse，请以管理员身份运行代码

图3.通过命令提示符以管理员身份运行代码

更新：在Azure Blob存储上，文件和目录结构取决于Blob名称。因此，如果您要查看如下图所示的文件结构，可以使用代码String blobName = file.getAbsolutePath().replace(path, "");来获取Blob名称。

图4.在我的本地计算机上构建的文件和目录结构

图5.通过Azure Storage Explorer在Azure Blob存储上的上述操作相同

这是我完整的代码。

private static final String path = "D:\\upload\\";
private static final String storageConnectionString = "<your storage connection string>";
private static final String containerName = "<your container for uploading>";

private static CloudBlobClient serviceClient;

public static void upload(File file) throws InvalidKeyException, URISyntaxException, StorageException, IOException {
    // Container name must be lower case.
    CloudBlobContainer container = serviceClient.getContainerReference(containerName);
    container.createIfNotExists();
    String blobName = file.getAbsolutePath().replace(path, "");
    CloudBlockBlob blob = container.getBlockBlobReference(blobName);
    if (blob.exists() == false) {
        blob.uploadFromFile(file.getAbsolutePath());
    } else {
        System.out.println("File " + file.getAbsolutePath() + " Already exist in storage");
    }
}

public static void main(String[] args)
        throws URISyntaxException, StorageException, InvalidKeyException, IOException {
    CloudStorageAccount account = CloudStorageAccount.parse(storageConnectionString);
    serviceClient = account.createCloudBlobClient();
    File source = new File(path);
    for (File fileOrDir : source.listFiles()) {
        boolean isFile = fileOrDir.isFile();
        if(isFile) {
            upload(fileOrDir);
        } else {
            for(File file: fileOrDir.listFiles()) {
                upload(file);
            }
        }

    }
}

在Java和Azure Blob存储SDK中上载带有子目录的目录

1 个答案: