Azure Easy Table：请求实体太大

Question

问题

如何解决我在Microsoft Azure门户中创建的Easy Table的错误消息？当我拨打MobileServiceClient.SyncContext.PushAsync时发生此错误：

OperationKind: Insert

Error Result: {
  "error": "request entity too large"
}

NuGet包

我正在使用以下NuGet包：

• Microsoft.Azure.Mobile.Client v3.1.0
• Microsoft.Azure.Mobile.Client.SQLiteStore v3.1.0

代码

    static bool _isInitialized;
    static MobileServiceClient _mobileService;

    public static async Task<IEnumerable<T>> GetItemsAsync<T>() where T : EntityData
    {
        await Initialize<T>();

        await SyncItemsAsync<T>();

        return await _mobileService.GetSyncTable<T>().ToEnumerableAsync();
    }

    public static async Task<T> GetItem<T>(string id) where T : EntityData
    {
        await Initialize<T>();

        await SyncItemsAsync<T>();

        return await _mobileService.GetSyncTable<T>().LookupAsync(id);
    }

    public static async Task AddItemAsync<T>(T item) where T : EntityData
    {
        await Initialize<T>();

        await _mobileService.GetSyncTable<T>().InsertAsync(item);
        await SyncItemsAsync<T>();
    }

    public static async Task UpdateItemAsync<T>(T item) where T : EntityData
    {
        await Initialize<T>();

        await _mobileService.GetSyncTable<T>().UpdateAsync(item);
        await SyncItemsAsync<T>();
    }

    public static async Task RemoveItemAsync<T>(T item) where T : EntityData
    {
        await Initialize<T>();

        await _mobileService.GetSyncTable<T>().DeleteAsync(item);
        await SyncItemsAsync<T>();
    }

    static async Task SyncItemsAsync<T>() where T : EntityData
    {
        await Initialize<T>();

        try
        {
            await _mobileService.SyncContext.PushAsync();
            await _mobileService.GetSyncTable<T>().PullAsync($"all{typeof(T).Name}", _mobileService.GetSyncTable<T>().CreateQuery());
        }
        catch (Exception ex)
        {
            System.Diagnostics.Debug.WriteLine($"Error during Sync occurred: {ex.Message}");
        }
    }

    async static Task Initialize<T>() where T : EntityData
    {
        if (_isInitialized)
            return;

        _mobileService = new MobileServiceClient(AzureConstants.AppServiceUrl);

        await ConfigureOnlineOfflineSync<T>();

        _isInitialized = true;
    }

    static async Task ConfigureOnlineOfflineSync<T>() where T : EntityData
    {
        var path = Path.Combine(MobileServiceClient.DefaultDatabasePath, "azureSyncDatabase.db");
        var store = new MobileServiceSQLiteStore(path);
        store.DefineTable<T>();

        await _mobileService.SyncContext.InitializeAsync(store, new SyncHandler(_mobileService));
    }

Answer 1

Azure移动应用后端只是一个为您预先配置的Node.js站点。您可以使用App Service Editor查看幕后代码。

查看Azure Mobile Apps Node.js HOWTO - 它包含一个关于使有效负载大小更大的部分。只需在App Service Editor中实现更改并重新启动服务即可。寻找HOWTO：处理大型文件上传

如果您正在进行插入操作，那么您的数据应该不会那么大。不要将图像或其他较大的项目插入表格 - 这是一种不好的做法。