问题描述

在升级Java Azure Blob Storage SDK的过程中，先后遇见了 UnsatisfiedDependencyException 和 UnexpectedLengthException.

错误一：Org.springframework.beans.factory UnsatisfiedDependencyException: Error creating bean with name 'azureFileServiceImpl': Unsatisfied dependency expressed through field 'blobServiceClient'.

错误二：com.azure.core.exception UnexpectedLengthException Request body emitted 27183 bytes, less than the expected 31671447552 bytes.

问题解答

对于问题一：UnsatisfiedDependencyException  错误，一般来说，都是应用中引入包的版本不兼容导致，最好的办法就是升级到当前最新的版本。如把** springboot 版本升级到了2.5.6，azure storage blob版本升级到12.13.0。**

但当问题一解决后，引发了问题二：com.azure.core.exception UnexpectedLengthException Request body emitted 27183 bytes, less than the expected 31671447552 bytes。

经过对代码中涉及到 File Length， Size等代码的调试后，发现问题所在：Azure storage Blob 由12.4.0升级到12.13.0后，获取文件的 length 发生了变化。

**由旧版本的 file对象的 getTotalSpace()  变为 FileInputstream对象的 available() 。 **

代码改动截图如下：

附录一：UploadExportFile 完整代码

@Service public class AzureServiceImpl implements AzureService{ 

    @Autowired private BlobServiceClient blobServiceClient;

    @Autowired private SysResourceMapper sysResourceMapper;

    @Autowired private SysOfflineExportMapper sysOfflineExportMapper;

    @Autowired private SysOfflineExportService sysOfflineExportService;

    @Override public boolean uploadExportFile(File file, SysOfflineExport export) {
        BlobContainerClient blobContainerClient = blobServiceClient.getBlobContainerClient("uploadblobdata"); if(!blobContainerClient.exists()){
            createBlobContainer();
        }
        FileInputStream fileInputStream; try {
            fileInputStream = new FileInputStream(file);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
            export.setLog(e.getMessage());
            export.setStatus(OperationStatus.Done);
            export.setResultType(ResultType.Failed);
            sysOfflineExportService.updateByUuid(export); return false;
        } //long size = file.getTotalSpace();
        long size = fileInputStream.available();
        String fileName = export.getFilenames();
        BlobClient blobClient = blobContainerClient.getBlobClient(fileName);
        blobClient.upload(fileInputStream,size);
        String blobUrl = blobClient.getBlobUrl();
        export.setDownloadurl(blobUrl);
        sysOfflineExportService.updateByUuid(export); if(StringUtils.isNotBlank(blobUrl)){
            export.setStatus(OperationStatus.Done);
            export.setResultType(ResultType.Success);
            sysOfflineExportService.updateByUuid(export); return true;
        }
        export.setStatus(OperationStatus.Done);
        export.setLog("upload file to blob failed！");
        sysOfflineExportService.updateByUuid(export); return false;
    }

}

当在复杂的环境中面临问题，格物之道需：浊而静之徐清，安以动之徐生。 云中，恰是如此!

分类: 【Azure 存储服务】

标签: Azure Storage Blob SDK Java, Unexpected Length Exception, Unsatisfied Dependency Exception, UnsatisfiedDependencyException, UnexpectedLengthException