无法从Spring Boot将文件上传到Azure Blob存储

Question

我正在尝试将文件上传到Azure blob存储中，但出现以下错误。

Spring Boot版本是2.1.RELEASE

java.lang.NoClassDefFoundError: io/netty/handler/ssl/SslContextBuilder\n\tat com.microsoft.rest.v2.http.SharedChannelPool.<init>(SharedChannelPool.java:83)\n\

要上传的代码如下，该代码是从Azure示例中复制的。

@Service
class AzureBlobService(val azureSettings: AzureSettings) {
    fun upload(file: MultipartFile): String {
        val credential = SharedKeyCredentials(azureSettings.storage!!.accountName, azureSettings.storage!!.accountKey)

        val pipeline = StorageURL.createPipeline(credential, PipelineOptions())

        /*
        From the Azure portal, get your Storage account blob service URL endpoint.
        The URL typically looks like this:
         */
        val u = URL(String.format(Locale.ROOT, "https://%s.blob.core.windows.net", azureSettings.storage!!.accountName))

        // Create a ServiceURL object that wraps the service URL and a request pipeline.
        val serviceURL = ServiceURL(u, pipeline)

        // Now you can use the ServiceURL to perform various container and blob operations.

        // This example shows several common operations just to get you started.

        /*
        Create a URL that references a to-be-created container in your Azure Storage account. This returns a
        ContainerURL object that wraps the container's URL and a request pipeline (inherited from serviceURL).
        Note that container names require lowercase.
         */
        val containerURL = serviceURL.createContainerURL(azureSettings.storage!!.container)

        /*
        Create a URL that references a to-be-created blob in your Azure Storage account's container.
        This returns a BlockBlobURL object that wraps the blob's URl and a request pipeline
        (inherited from containerURL). Note that blob names can be mixed case.
         */
        val blobURL = containerURL.createBlockBlobURL(file.name)
        blobURL.upload(Flowable.just(ByteBuffer.wrap(file.bytes)), file.size, null, null, null, null)
        return blobURL.toString()
    }
}

有什么想法吗？ 谢谢