Azure Service Bus:队列中没有消息，只有请求 [英] Azure Service Bus: No messages on queue, only requests

问题描述

我正在尝试使用服务总线队列作为Iot集线器端点将消息从IoT中心路由到功能应用程序.我发送到IoT中心的消息已在IoT中心中注册，但不会路由到服务总线队列.当我监视服务总线队列时，我只会看到成功的请求.

I'm trying to route messages from an IoT hub to a function app using a service bus queue as an Iot hub endpoint. The messages I send to the IoT hub are registered in the IoT hub, but won't be routed to the service bus queue. When I monitor the service bus queue, I only see successful requests.

我按照以下标准实施了两个路由规则:

I implemented two routing rules with the following criteria:

$._eventtype="meeting"

和

$body._eventtype="meeting"

我使用Azure提供的示例测试了第二个示例，它与之匹配. 他们似乎都没有将消息转发到服务总线.

I tested the second one with the example provided by Azure and it matched. Neither of them seem to forward the messages to the service bus.

在下面的示例消息中查找，我正在尝试路由该消息.

Find below a sample message, which I'm trying to route.

{"_room": "-----", 
 "_eventtype": "meeting", 
 "_temperature": 25, 
 "_building": "-----", 
 "_timestamp": "2018-01-24T11:08:13.056792Z", 
 "_humidity": 36, 
 "_id": 0}

推荐答案

您的消息正文的Routes表达式正确.看来，您的事件消息缺少内容类型和内容编码标头，请参阅更多详细信息

Your Routes expression for message body is correct. It looks like, your event message is missing a Content type and Content encoding headers, see more details here.

在这种情况下，当您的设备是MQTT直接连接时，请使用以下主题，例如Device1:

In the case, when your device is MQTT direct connected, use the following topic, example for Device1:

devices/Device1/messages/events/$.ce=utf-8&$.ct=application%2Fjson

对于Http连接的设备:

for Http connected device:

content-encoding:utf-8
content-type:application/json

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