放置令牌失敗。 狀態碼：404 - 服務總線觸發 Azure Function (Java) 失敗

Question

我嘗試使用 VS 代碼創建基於 Azure 的簡單 Java 函數。 我嘗試從服務總線獲取主題消息。

//local.settings.json（SAS 策略：RadioTopicPolicy = Manage/Read/Listen）

"topicconnstring":"Endpoint=sb://111standardsb.servicebus.windows.net/;SharedAccessKeyName=RadioTopicPolicy;SharedAccessKey 
       =11111nuAmrb16c3/cGaxe0dYGTz/tiBebTI+peG4zE=;"

此 Function 由服務總線主題觸發並將數據存儲到數據湖綁定示例

package com.function;

import com.microsoft.azure.functions.annotation.*;
import com.microsoft.azure.functions.*;

/**
 * Azure Functions with Azure Storage Queue trigger.
*/ 
public class TopicTriggerCosmosOutput {
     /**
     * This function will be invoked when a new message is received at the specified path. The 
message contents are provided as input to this function.
    */ 

    @FunctionName("TopicTriggerDataLakeOutput")
    public void run(
        @ServiceBusTopicTrigger(
            name = "message",
            topicName = "radioTopic",
            subscriptionName = "RadioSubscription",
            connection = "topicconnstring"
        ) String message,
        final ExecutionContext context
    ) {
        context.getLogger().info(message);
    }

}

在 VS Code 中調試時的錯誤：

[3.4.2020 12.29.30] Message processing error 
    (Action=Receive, 

 ClientId=MessageReceiver1radioTopic/Subscriptions/RadioSubscription, 
    EntityPath=radioTopic/Subscriptions/RadioSubscription, Endpoint=mystandardsb.servicebus.windows.net)
    [3.4.2020 12.29.30] Microsoft.Azure.ServiceBus: Put token failed. status-code: 404, status- 
   description: The messaging entity 

 'sb://mystandardsb.servicebus.windows.net/radioTopic/Subscriptions/RadioSubscription' could not be 
    found. To know more visit 
    https://aka.ms/sbResourceMgrExceptions.  TrackingId:67df5bb7-87fb-48ca- 
    9e8e-6829c4e3a4a1_G25, 
    SystemTracker:mystandardsb.servicebus.windows.net:radioTopic/Subscriptions/RadioSubscription, 
    Timestamp:2020-04-03T12:29:30.

Answer 1

此錯誤表示自動轉發目標實體的目標不存在。 目標實體（隊列或主題）必須在創建源之前存在。 創建目標實體后重試。

看看這個文檔：

https://docs.microsoft.com/en-us/azure/service-bus-messaging/service-bus-resource-manager-exceptions#error-bad-request

我注意到你說

Azure Service Bus 中有“Radio”服務總線主題和“RadioSubscription”訂閱。 有“RadioTopicPolicy”

所以你的 function 應該是這樣的：

@FunctionName("TopicTriggerDataLakeOutput")
    public void run(
        @ServiceBusTopicTrigger(
            name = "message",
            topicName = "Radio",
            subscriptionName = "RadioSubscription",
            connection = "topicconnstring"
        ) String message,
        final ExecutionContext context
    ) {
        context.getLogger().info(message);
    }

並確保您的 SAS 令牌的主鍵是正確的。 希望能幫助到你。：）