从 Java 对象生成 CSV 并在没有中间位置的情况下移动到 Azure 存储

Question

是否可以从 Java 对象创建类似 CSV 的文件并将它们移动到 Azure 存储而不使用临时位置？

Answer 1

根据您的描述，您似乎想上传一个 CSV 文件而不占用您的本地 space。因此，我建议您使用流将 CSV 文件上传到 Azure 文件存储。

示例代码如下：

import com.microsoft.azure.storage.CloudStorageAccount;
import com.microsoft.azure.storage.file.CloudFile;
import com.microsoft.azure.storage.file.CloudFileClient;
import com.microsoft.azure.storage.file.CloudFileDirectory;
import com.microsoft.azure.storage.file.CloudFileShare;
import com.microsoft.azure.storage.StorageCredentials;
import com.microsoft.azure.storage.StorageCredentialsAccountAndKey;

import java.io.File;
import java.io.FileInputStream;
import java.io.StringBufferInputStream;

public class UploadCSV {

    // Configure the connection-string with your values
    public static final String storageConnectionString =
            "DefaultEndpointsProtocol=http;" +
                    "AccountName=<storage account name>;" +
                    "AccountKey=<storage key>";


    public static void main(String[] args) {
        try {
            CloudStorageAccount storageAccount = CloudStorageAccount.parse(storageConnectionString);

            // Create the Azure Files client.
            CloudFileClient fileClient = storageAccount.createCloudFileClient();

            StorageCredentials sc = fileClient.getCredentials();

            // Get a reference to the file share
            CloudFileShare share = fileClient.getShareReference("test");

            //Get a reference to the root directory for the share.
            CloudFileDirectory rootDir = share.getRootDirectoryReference();

            //Get a reference to the file you want to download
            CloudFile file = rootDir.getFileReference("test.csv");

            file.upload( new StringBufferInputStream("aaa"),"aaa".length());

            System.out.println("upload success");

        } catch (Exception e) {
            // Output the stack trace.
            e.printStackTrace();
        }
    }
}

然后我就成功上传文件到账户了。

您还可以参考以下话题：

1.Can I upload a stream to Azure blob storage without specifying its length upfront?

2.Upload blob in Azure using BlobOutputStream

希望对你有帮助。

从 Java 对象生成 CSV 并在没有中间位置的情况下移动到 Azure 存储

Generate CSV from Java object and move to Azure Storage without intermediate location

java

csv

azure

storage

csv-write-stream