Question

const azure = require('azure-storage');
const queueService = azure.createQueueService("UseDevelopmentStorage=true");

module.exports = async function (context, req) {
    context.log('JavaScript HTTP trigger function processed a request.');
    context.log('Request Headers = ' + JSON.stringify(req.headers));

    queueName = 'azurequeue';

    if ((req.query.parameter && req.query.func) || (req.body && req.body.parameter && req.body.func)) {

        var send = new Object();

        var message = 'Hello world!' 

        queueService.createQueueIfNotExists(queueName,function(err, result, response) {
            if (err) {
                context.log('here')
                context.error(err);
              return;
            }

            if (result.created) {
                context.log(`[Queue - Sender] Queue ${queueName} did not exist, created it`);
            }

            queueService.createMessage(queueName, message , (err, result, res) => {
                if (err) {
                    context.error(`[Queue - Sender] An error occurred: ${JSON.stringify(err)}`);
                }

                context.log(`[Queue - Sender] Sent: ${JSON.stringify(message)}`);
            });

          });

        send.ans = 'Hello world!'; 

        context.res = {
            body: send
        };

    }
    else {
        context.res = {
            status: 400,
            body: "Please pass a name on the query string or in the request body"
        };
    }
};

我正在使用httpTrigger编写Azure函数。触发后，应将其保存到azure存储模拟器中托管的队列名称“ azurequeue”。

我收到 Error

的错误

Storage

我在做错什么吗？如何解决这个问题。为什么会这样？

Answer 1

好像您将HttpTrigger和QueueTrigger混合在一起。

如果您想使用上面的逻辑将消息写入队列，请确保您的function.json如下所示。

{
  "disabled": false,
  "bindings": [
    {
      "authLevel": "anonymous",
      "type": "httpTrigger",
      "direction": "in",
      "name": "req",
      "methods": [
        "get",
        "post"
      ]
    },
    {
      "type": "http",
      "direction": "out",
      "name": "res"
    }
  ]
}

如果首选由Azure函数提供的outputbinding功能，请使用下面的代码。不必担心azurequeue不存在，输出绑定内部使用createQueueIfNotExists。

module.exports = async function (context, req) {
    context.log('JavaScript HTTP trigger function processed a request.');
    context.log('Request Headers = ' + JSON.stringify(req.headers));

    if ((req.query.parameter && req.query.func) || (req.body && req.body.parameter && req.body.func)) {

        var message = 'Hello world!' 
        var send = {'ans' : message};

        return {
            res: {
                body: send
            },
            queueOutput: message
        };
    }
    else {
        context.res = {
            status: 400,
            body: "Please pass a name on the query string or in the request body"
        };
        return;
    }
};

别忘了在function.json中添加队列输出。

{
  "disabled": false,
  "bindings": [
    {
      "authLevel": "anonymous",
      "type": "httpTrigger",
      "direction": "in",
      "name": "req",
      "methods": [
        "get",
        "post"
      ]
    },
    {
      "type": "http",
      "direction": "out",
      "name": "res"
    },
    {
      "type": "queue",
      "direction": "out",
      "name":"queueOutput" ,
      "queueName": "azurequeue",
      "connection":"AzureWebJobsStorage"
    }
  ]
}

为避免将来遇到其他障碍，请查看Azure Function guidance of javascript。

Azure队列存储消息未保存到正确的队列中

1 个答案: