[FIXED] Upload a file to azure blob storage met an error using java

Issue

I'm new to azure ,I want to upload a file in azure using java sdk and met with error.

Here is my approach,

BlobServiceClient client = new BlobServiceClientBuilder()
    .connectionString(connectStr)
    .buildClient();

BlobContainerClient blobContainerClient = blobServiceClient.createBlobContainer(containerName);

String localPath = "./data/";
String fileName = "quickstart" + java.util.UUID.randomUUID() + ".txt";

BlobClient blobClient = blobContainerClient.getBlobClient(fileName);
FileWriter writer = null;
try
{
    writer = new FileWriter(localPath + fileName, true);
    writer.write("Hello, World!");
    writer.close();
}
catch (IOException ex)
{
    System.out.println(ex.getMessage());
}

blobClient.uploadFromFile(localPath + fileName);

exception,

Exception in thread "main" java.lang.illegalArgumenatation:Input byte array has wrong 4-byte ending unit at java.base/java.util.Base64$Decoder.decode0(Base64.java:837)

Kindly help with this?

Solution

I tried in my environment and successfully uploaded files in azure blob storage.

package  com.blobs.quickstart;

import  com.azure.storage.blob.*;
import  com.azure.storage.blob.BlobServiceClient;

public  class  App

{
public  static  void  main( String[] args )
{
String  connectStr = "<Connection string>";
BlobServiceClient  blobServiceClient = new  BlobServiceClientBuilder().connectionString(connectStr).buildClient();
String  containerName = "test";
BlobContainerClient  containerClient = blobServiceClient.getBlobContainerClient(containerName);
String  localPath = "C:\\Users\\v-vsettu\\Documents\\Venkat\\barcode.docx";
BlobClient  blobClient = containerClient.getBlobClient("barcode.docx");
System.out.println("Blob uploaded");
blobClient.uploadFromFile(localPath);
}
}

Console:

Portal:

Initially, I got an same error :

Because when I pass wrong connection string or access key in the code I got an error. Make sure you are connection string is in correct.

You can get the connection string from portal:

Reference: Quickstart: Azure Blob Storage library - Java | Microsoft Learn

Answered By - Venkatesan
Answer Checked By - Clifford M. (JavaFixing Volunteer)