问题描述
使用Azure Storage Account的共享访问签名(Share Access Signature) 生成的终结点，连接时遇见 The Azure Storage endpoint url is malformed (Azure 存储终结点 URL 格式不正确)
Storage Account SDK in pom.xml:
<dependency> <groupId>com.azure</groupId> <artifactId>azure-storage-blob</artifactId> <version>12.6.0</version> </dependency>
App.Java 文件中，创建 BlobServiceClient 对象代码：
String endpoint ="BlobEndpoint=https://://************..."; BlobServiceClient blobServiceClientbyendpoint = new BlobServiceClientBuilder().endpoint(endpoint).buildClient();
获取Endpoint的方法为（Azure Portal --> Storage Account --> Share access signature）
当执行Java 代码时，main函数抛出异常：java.lang.IllegalArgumentException: The Azure Storage endpoint url is malformed
PS C:LBWorkSpaceMyCode1-Storage Account - Operation Blob by Connection String - Java>
& 'C:Program FilesMicrosoftjdk-11.0.12.7-hotspotbinjava.exe'
'-agentlib:jdwp=transport=dt_socket,server=n,suspend=y,address=localhost:59757'
'@C:UsersAppDataLocalTempcp_6ux3xmehddi1mc4fanfjupd3x.argfile'
'com.blobs.quickstart.App'
Azure Blob storage v12 - Java quickstart sample 2022-05-26 10:24:29 ERROR BlobServiceClientBuilder - The Azure Storage endpoint url is malformed. Exception in thread "main" java.lang.IllegalArgumentException: The Azure Storage endpoint url is malformed. at com.azure.storage.blob.BlobServiceClientBuilder.endpoint(BlobServiceClientBuilder.java:132) at com.blobs.quickstart.App.main(App.java:30)
问题分析
消息 [The Azure Storage endpoint url is malformed (Azure 存储终结点 URL 格式不正确)] 说明代码中使用的格式不对，回到生成endopoint的页面查看，原来使用的是连接字符串 Connection String. 与直接使用Access Key中的Connection String是相同的代码方式，而 Endpoint 是指当个连接到Blob Service的URL。
回到代码中，发现新版本把连接方式进行了区分：
- 使用Connection String时，用 new BlobServiceClientBuilder().connectionString(connectStr).buildClient();
- 使用Endpoint时，用 new BlobServiceClientBuilder().endpoint(endpoint).buildClient();
所以，解决 endpoint url malformed 关键就是使用正确的 SAS URL 或者是 Connection String
//使用连接字符串时
String connectStr ="BlobEndpoint=https://:************.blob.core.chinacloudapi.cn/;...SharedAccessSignature=sv=2020-08-0...&sig=**************"; BlobServiceClient blobServiceClient = new BlobServiceClientBuilder().connectionString(connectStr).buildClient();
//使用SAS终结点 String endpoint ="https://************.blob.core.chinacloudapi.cn/?sv=2020-08-04...&sig=*********************"; BlobServiceClient blobServiceClientbyendpoint = new BlobServiceClientBuilder().endpoint(endpoint).buildClient();
完整的示例代码：
package com.blobs.quickstart; /** * Azure blob storage v12 SDK quickstart */ import com.azure.storage.blob.*; import com.azure.storage.blob.models.*; import java.io.*; public class App { public static void main( String[] args ) throws IOException { System.out.println("Azure Blob storage v12 - Java quickstart samplen"); // Retrieve the connection string for use with the application. The storage // connection string is stored in an environment variable on the machine // running the application called AZURE_STORAGE_CONNECTION_STRING. If the environment variable // is created after the application is launched in a console or with // Visual Studio, the shell or application needs to be closed and reloaded // to take the environment variable into account. //String connectStr ="DefaultEndpointsProtocol=https;AccountName=******;AccountKey=***********************;EndpointSuffix=core.chinacloudapi.cn";// System.getenv("AZURE_STORAGE_CONNECTION_STRING"); String connectStr ="BlobEndpoint=https://******* */.blob.core.chinacloudapi.cn/;QueueEndpoint=https://*******.queue.core.chinacloudapi.cn/;FileEndpoint=https://*******.file.core.chinacloudapi.cn/;TableEndpoint=https://*******.table.core.chinacloudapi.cn/;SharedAccessSignature=sv=2020...&sig=*************************"; BlobServiceClient blobServiceClient = new BlobServiceClientBuilder().connectionString(connectStr).buildClient(); //Create a unique name for the container String containerName = "lina-" + java.util.UUID.randomUUID(); // Create the container and return a container client object BlobContainerClient containerClient = blobServiceClient.createBlobContainer(containerName); BlobContainerClient containerClient1 = blobServiceClient.getBlobContainerClient("container-name"); if(!containerClient1.exists()) { System.out.println("create containerName"); blobServiceClient.createBlobContainer("container-name"); } System.out.println("create containerName ....."); // // Create a local file in the ./data/ directory for uploading and downloading // String localPath = "./data/"; // String fileName = "quickstart" + java.util.UUID.randomUUID() + ".txt"; // File localFile = new File(localPath + fileName); // // Write text to the file // FileWriter writer = new FileWriter(localPath + fileName, true); // writer.write("Hello, World!"); // writer.close(); // // Get a reference to a blob // BlobClient blobClient = containerClient.getBlobClient(fileName); // System.out.println("nUploading to Blob storage as blob:nt" + blobClient.getBlobUrl()); // // Upload the blob // blobClient.uploadFromFile(localPath + fileName); // System.out.println("nListing blobs..."); // // List the blob(s) in the container. // for (BlobItem blobItem : containerClient.listBlobs()) { // System.out.println("t" + blobItem.getName()); // } // // Download the blob to a local file // // Append the string "DOWNLOAD" before the .txt extension so that you can see both files. // String downloadFileName = fileName.replace(".txt", "DOWNLOAD.txt"); // File downloadedFile = new File(localPath + downloadFileName); // System.out.println("nDownloading blob tont " + localPath + downloadFileName); // blobClient.downloadToFile(localPath + downloadFileName); // // Clean up // System.out.println("nPress the Enter key to begin clean up"); // System.console().readLine(); // System.out.println("Deleting blob container..."); // containerClient.delete(); // System.out.println("Deleting the local source and downloaded files..."); // localFile.delete(); // downloadedFile.delete(); System.out.println("Done"); } }
参考资料
快速入门：使用 Java v12 SDK 管理 blob: https://docs.azure.cn/zh-cn/storage/blobs/storage-quickstart-blobs-java?tabs=powershell%2Cenvironment-variable-windows
