Question

我在insert中使用以下代码来执行推送通知。 TodoItem表包含imageurl和Channel Table有channl uris。此代码的引用位于此处 - http://azure.microsoft.com/en-us/documentation/articles/mobile-services-windows-store-dotnet-get-started-push-vs2012/

以下是TodoItem表中插入脚本的代码

var azure = require('azure');

var qs = require('querystring');

var appSettings = require('mobileservice-config').appSettings;



function insert(item, user, request) {

    // Get storage account settings from app settings.

    var accountName = appSettings.STORAGE_ACCOUNT_NAME;

    var accountKey = appSettings.STORAGE_ACCOUNT_ACCESS_KEY;

    var host = accountName + '.blob.core.windows.net';



    if ((typeof item.containerName !== "undefined") && (

        item.containerName !== null)) {

        // Set the BLOB store container name on the item, which must be lowercase.

        item.containerName = item.containerName.toLowerCase();



        // If it does not already exist, create the container

        // with public read access for blobs.       

        var blobService = azure.createBlobService(accountName, accountKey, host);

        blobService.createContainerIfNotExists(item.containerName, {

            publicAccessLevel: 'blob'

        }, function(error) {

                if (!error) {



                    // Provide write access to the container for the next 5 mins.       

                    var sharedAccessPolicy = {

                        AccessPolicy: {

                            Permissions: azure.Constants.BlobConstants.SharedAccessPermissions.WRITE,

                            Expiry: new Date(new Date().getTime() + 5 * 60 * 1000)

                        }

                    };



                    // Generate the upload URL with SAS for the new image.

                    var sasQueryUrl =

                        blobService.generateSharedAccessSignature(item.containerName,

                            item.resourceName, sharedAccessPolicy);



                    // Set the query string.

                    item.sasQueryString = qs.stringify(sasQueryUrl.queryString);



                    // Set the full path on the new new item,

                    // which is used for data binding on the client.

                    item.imageUri = sasQueryUrl.baseUrl + sasQueryUrl.path;



                } else {

                    console.error(error);

                }

                request.execute({
        success: function() {
            request.respond();
            sendNotifications();
        }
    });

            });

    } else {

        request.execute({
        success: function() {
            request.respond();
            sendNotifications();
        }
    });




}
}
function sendNotifications() {
        var registrationsTable = tables.getTable('Channel');
        registrationsTable.read({
            success: function(registrations) {
                registrations.forEach(function(registration) {
                    push.wns.sendToastText04(registration.handle, {
                        text1: item.text
                    }, {
                        success: function(pushResponse) {
                            console.log("Sent push:", pushResponse);
                        }
                    });
                });
            }
        });
    }

表'Channel'的回调错误是错误。 ReferenceError：未定义item at：122：32 [外部代码] at Object.registrationsTable.read.success（：120：31） [外部代码]

任何人都可以告诉我如何解决这个问题吗？

Answer 1

问题出在这段代码中：success：function（registrations）{}。

我会删除对push.wns的调用并登录到控制台以尝试调试。检查'item'是否存在。如果您正在使用在线节点编辑器，它将显示您是否有任何不匹配的括号。

我假设您已配置WNS以在Azure门户中使用？

ReferenceError：Azure插入脚本中未定义item

1 个答案: