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我已经按照Microsoft 教程处理基于 Azure 存储中创建的 blob 的事件。

事件正在触发，但处理图像的事件代码被绕过，因为 EventGrid 事件未填充输入流参数。这应该通过 blob（图像文件）的路径进行处理。

 public static async Task Run(
        [EventGridTrigger]EventGridEvent eventGridEvent,
        [Blob("{data.url}", FileAccess.Read)] Stream input,
        ILogger log)
    {
        try
        {
            log.LogInformation("Entered Thumbnail Function ..");

            if (input != null) 
            { //doesn't get to here ..

每次事件触发的日志是

2018-11-15T05:33:41.096 [Information] Executing 'Thumbnail' (Reason='EventGrid trigger fired at 2018-11-15T05:33:41.0781270+00:00' ..

2018-11-15T05:33:41.096 [Information] Entered Thumbnail Function

2018-11-15T05:33:41.096 [Information] Executed 'Thumbnail' (Succeeded, 

2018-11-15T05:33:41.096 [Information] Executing 'Thumbnail' (Reason='EventGrid trigger fired at 2018-11-15T05:33:41.0781270+00:00', 

2018-11-15T05:33:41.096 [Information] Entered Thumbnail Function

2018-11-15T05:33:41.096 [Information] Executed …