Azure Java 函数，在 BlobOutput 路径注释中获取 HttpTrigger 正文属性值

Question

我有一个 HttpTrigger 函数，请求正文为

{
"id":"222",
"name":"some name"
}

我想从请求正文中获取 Id 到 @BlobOuput 路径中，如下所示

@BlobOutput(name="blob",  path="input-blob/{body.id}")

有没有办法实现这个功能。

Answer 1

关于如何从httptrigger请求体中读取@BlobOuput路径，请参考以下步骤。

我使用以下请求正文进行测试

{
"BlobName":"test.txt",
 "Content":"test"
}

1. 创建一个自定义类作为请求正文。

public class BlobInfo {
    public String Content;
    public String BlobName;

    public String getContent() {
        return Content;
    }

    public void setContent(String content) {
        Content = content;
    }

    public String getBlobName() {
        return BlobName;
    }

    public void setBlobName(String blobName) {
        BlobName = blobName;
    }
}

1. 功能代码

@FunctionName("HttpExample")
    public HttpResponseMessage run(
            @HttpTrigger(name = "req", methods = {HttpMethod.GET, HttpMethod.POST}, authLevel = AuthorizationLevel.ANONYMOUS) HttpRequestMessage<Optional<BlobInfo>> request, // request body gets automatically de-serialized into the custom object you create
            @BlobOutput(name="output",  path = "test/{BlobName}" //  use the custom object's property you need as file name
                    ,connection = "AzureWebJobsStorage") OutputBinding<String> outputItem,
            final ExecutionContext context) throws IOException {
        context.getLogger().info("Java HTTP trigger processed a request.");
        BlobInfo body = request.getBody().get();
        context.getLogger().info(body.Content);
        context.getLogger().info(body.BlobName);
        outputItem.setValue("Hello World!");

        return request.createResponseBuilder(HttpStatus.OK).body("success").build();

    }

1. 测试

POST <function url>
Content-Type:application/json

{
 "BlobName":"test.txt",
 "Content":"test"
}