将FormData对象读入Java HTTP触发的Azure函数

Question

我最近创建了一个HTTP触发的Java Azure函数来处理一些后端任务。 Azure功能的主要目的是接受/读取包装在javascript FormData对象中的图像文件并将文件上传到我的azure blob存储。

我一直在网上搜索，但找不到如何从Java中的FormData对象读取文件的有效示例？我已经看到了一些使用C＃和node.js。

这里是链接-> Azure functions - How to read form data

所以必须要用Java来做到这一点，有人能提供一个可行的例子吗？

public class Function {
     @FunctionName("HttpTrigger-Java")
     public HttpResponseMessage run(@HttpTrigger(name = "req", methods = 
  {HttpMethod.POST}) HttpRequestMessage<Optional<String>> request,
         final ExecutionContext context) {            

        String postRequest = request.getBody();

         //HELP: I need to get the FormData object from the postRequest some how... 
        FormData formDataObj = postRequest.getFormData();

        //HELP: Then I need to get my image file from the FormData Object...
        File sourceFile = formDataObj.getImageFile(); 


        try {
            // Parse the connection string 
            storageAccount = CloudStorageAccount.parse(storageConnectionString);

            // get blob client 
            blobClient = storageAccount.createCloudBlobClient();

            // get container name 
            container = blobClient.getContainerReference(containerName);    

            //Getting a blob reference
            blob = container.getBlockBlobReference(sourceFile.getName());

            //Creating blob and uploading file to it                
            blob.uploadFromFile(sourceFile.getAbsolutePath());

        } catch (StorageException ex) {
            return request.createResponseBuilder(HttpStatus.BAD_REQUEST).body("There was an error with Storage Account.").build();
        }

        return request.createResponseBuilder(HttpStatus.OK).body("Images Uploaded Successfully!, ").build();

}

}

Answer 1

我相信您可以使用Apache Commons FileUpload解析正文，并通过字符串进行解析，此answer显示了一种实现方法。