Question

我正在使用Google .NET API从Google Analytics中获取分析数据。

这是我开始身份验证的代码：

IAuthorizationCodeFlow flow =
    new GoogleAuthorizationCodeFlow(new GoogleAuthorizationCodeFlow.Initializer
        {
            ClientSecrets = new ClientSecrets
            {
                ClientId = googleApiClientId,
                ClientSecret = googleApiClientSecret
            },
            Scopes = new[] { 
                Google.Apis.Analytics.v3.AnalyticsService.Scope.AnalyticsReadonly
            },
            DataStore = new Google.Apis.Util.Store.FileDataStore("Test_GoogleApi")
        });

用户将FileDataStore存储在本地用户配置文件中作为文件。我在ASP.NET应用程序中运行此代码，因此我无法真正使用该FileDataStore，因此我需要的是获取数据的其他方法。

Google.Apis.Util.Store仅包含FileDataStore和IDataStore的接口。在我开始实现自己的DataStore之前 - 是否还有其他可供下载的DataStore对象？

由于

Answer 1

Google FileDataStore的来源可用here。

我已经编写了一个IDataStore的简单实体框架（版本6）实现，如下所示。

如果您希望将其放在单独的项目中，以及EF，则需要安装Google.Apis.Core nuget包。

public class Item
{
    [Key]
    [MaxLength(100)]
    public string Key { get; set; }

    [MaxLength(500)]
    public string Value { get; set; }
}

public class GoogleAuthContext : DbContext
{
    public DbSet<Item> Items { get; set; }
}

public class EFDataStore : IDataStore
{
    public async Task ClearAsync()
    {
        using (var context = new GoogleAuthContext())
        {
            var objectContext = ((IObjectContextAdapter)context).ObjectContext;
            await objectContext.ExecuteStoreCommandAsync("TRUNCATE TABLE [Items]");
        }
    }

    public async Task DeleteAsync<T>(string key)
    {
        if (string.IsNullOrEmpty(key))
        {
            throw new ArgumentException("Key MUST have a value");
        }

        using (var context = new GoogleAuthContext())
        {
            var generatedKey = GenerateStoredKey(key, typeof(T));
            var item = context.Items.FirstOrDefault(x => x.Key == generatedKey);
            if (item != null)
            {
                context.Items.Remove(item);
                await context.SaveChangesAsync();
            }
        }
    }

    public Task<T> GetAsync<T>(string key)
    {
        if (string.IsNullOrEmpty(key))
        {
            throw new ArgumentException("Key MUST have a value");
        }

        using (var context = new GoogleAuthContext())
        {
            var generatedKey = GenerateStoredKey(key, typeof(T));
            var item = context.Items.FirstOrDefault(x => x.Key == generatedKey);
            T value = item == null ? default(T) : JsonConvert.DeserializeObject<T>(item.Value);
            return Task.FromResult<T>(value);
        }
    }

    public async Task StoreAsync<T>(string key, T value)
    {
        if (string.IsNullOrEmpty(key))
        {
            throw new ArgumentException("Key MUST have a value");
        }

        using (var context = new GoogleAuthContext())
        {
            var generatedKey = GenerateStoredKey(key, typeof (T));
            string json = JsonConvert.SerializeObject(value);

            var item = await context.Items.SingleOrDefaultAsync(x => x.Key == generatedKey);

            if (item == null)
            {
                context.Items.Add(new Item { Key = generatedKey, Value = json});
            }
            else
            {
                item.Value = json;
            }

            await context.SaveChangesAsync();
        }
    }

    private static string GenerateStoredKey(string key, Type t)
    {
        return string.Format("{0}-{1}", t.FullName, key);
    }
}

Answer 2

我知道这个问题已经回答了一段时间，但我认为这是一个分享我的发现的好地方，因为那些寻找例子有类似困难的人。我发现使用桌面或MVC Web应用程序的Google API .Net库很难找到文档/示例。我终于在您可以在Google项目网站here上的示例存储库中找到的任务示例中找到了一个很好的示例＆lt; - 真的真的帮助了我。

我最终抓住FileDataStore的源代码并创建了一个AppDataStore类并将其放在我的App_Code文件夹中。您可以找到源here，虽然这实际上是一个简单的更改 - 将文件夹更改为指向〜/ App_Data。

~~我正在研究的最后一个难题是获取offline_access令牌。~~

编辑：以下是方便的代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

using System.IO;
using System.Threading;
using System.Threading.Tasks;

using Google.Apis.Util.Store;
using Google.Apis.Json;

namespace Google.Apis.Util.Store {
    public class AppDataFileStore : IDataStore {
        readonly string folderPath;
        /// <summary>Gets the full folder path.</summary>
        public string FolderPath { get { return folderPath; } }

        /// <summary>
        /// Constructs a new file data store with the specified folder. This folder is created (if it doesn't exist
        /// yet) under <see cref="Environment.SpecialFolder.ApplicationData"/>.
        /// </summary>
        /// <param name="folder">Folder name.</param>
        public AppDataFileStore(string folder) {
            folderPath = Path.Combine(HttpContext.Current.Server.MapPath("~/App_Data/"), folder);
            if (!Directory.Exists(folderPath)) {
                Directory.CreateDirectory(folderPath);
            }
        }

        /// <summary>
        /// Stores the given value for the given key. It creates a new file (named <see cref="GenerateStoredKey"/>) in
        /// <see cref="FolderPath"/>.
        /// </summary>
        /// <typeparam name="T">The type to store in the data store.</typeparam>
        /// <param name="key">The key.</param>
        /// <param name="value">The value to store in the data store.</param>
        public Task StoreAsync<T>(string key, T value) {
            if (string.IsNullOrEmpty(key)) {
                throw new ArgumentException("Key MUST have a value");
            }

            var serialized = NewtonsoftJsonSerializer.Instance.Serialize(value);
            var filePath = Path.Combine(folderPath, GenerateStoredKey(key, typeof(T)));
            File.WriteAllText(filePath, serialized);
            return TaskEx.Delay(0);
        }

        /// <summary>
        /// Deletes the given key. It deletes the <see cref="GenerateStoredKey"/> named file in
        /// <see cref="FolderPath"/>.
        /// </summary>
        /// <param name="key">The key to delete from the data store.</param>
        public Task DeleteAsync<T>(string key) {
            if (string.IsNullOrEmpty(key)) {
                throw new ArgumentException("Key MUST have a value");
            }

            var filePath = Path.Combine(folderPath, GenerateStoredKey(key, typeof(T)));
            if (File.Exists(filePath)) {
                File.Delete(filePath);
            }
            return TaskEx.Delay(0);
        }

        /// <summary>
        /// Returns the stored value for the given key or <c>null</c> if the matching file (<see cref="GenerateStoredKey"/>
        /// in <see cref="FolderPath"/> doesn't exist.
        /// </summary>
        /// <typeparam name="T">The type to retrieve.</typeparam>
        /// <param name="key">The key to retrieve from the data store.</param>
        /// <returns>The stored object.</returns>
        public Task<T> GetAsync<T>(string key) {
            if (string.IsNullOrEmpty(key)) {
                throw new ArgumentException("Key MUST have a value");
            }

            TaskCompletionSource<T> tcs = new TaskCompletionSource<T>();
            var filePath = Path.Combine(folderPath, GenerateStoredKey(key, typeof(T)));
            if (File.Exists(filePath)) {
                try {
                    var obj = File.ReadAllText(filePath);
                    tcs.SetResult(NewtonsoftJsonSerializer.Instance.Deserialize<T>(obj));
                }
                catch (Exception ex) {
                    tcs.SetException(ex);
                }
            }
            else {
                tcs.SetResult(default(T));
            }
            return tcs.Task;
        }

        /// <summary>
        /// Clears all values in the data store. This method deletes all files in <see cref="FolderPath"/>.
        /// </summary>
        public Task ClearAsync() {
            if (Directory.Exists(folderPath)) {
                Directory.Delete(folderPath, true);
                Directory.CreateDirectory(folderPath);
            }

            return TaskEx.Delay(0);
        }

        /// <summary>Creates a unique stored key based on the key and the class type.</summary>
        /// <param name="key">The object key.</param>
        /// <param name="t">The type to store or retrieve.</param>
        public static string GenerateStoredKey(string key, Type t) {
            return string.Format("{0}-{1}", t.FullName, key);
        }
    }
}

我必须设置强制批准提示才能获取离线访问令牌。

var req = HttpContext.Current.Request;
var oAuthUrl = Flow.CreateAuthorizationCodeRequest(new UriBuilder(req.Url.Scheme, req.Url.Host, req.Url.Port, GoogleCalendarUtil.CallbackUrl).Uri.ToString()) as GoogleAuthorizationCodeRequestUrl;
oAuthUrl.Scope = string.Join(" ", new[] { CalendarService.Scope.CalendarReadonly });
oAuthUrl.ApprovalPrompt = "force";
oAuthUrl.State = AuthState;

Answer 3

这里有Windows 8应用程序和Windows Phone的实现：

在您要实现自己的DataStore之前，请查看以下线程Deploying ASP.NET to Windows Azure cloud, application gives error when running on cloud。

将来我们可能还有一个EF DataStore。请记住，它是一个开源项目，因此您可以实现它并将其发送给审查:)请查看我们的贡献页面（https://code.google.com/p/google-api-dotnet-client/wiki/BecomingAContributor）

Answer 4

您基本上需要创建自己对Idatastore的限制，然后使用它。

IDataStore StoredRefreshToken = new myDataStore();
// Oauth2 Autentication.
using (var stream = new System.IO.FileStream("client_secret.json", System.IO.FileMode.Open, System.IO.FileAccess.Read))
{
 credential = GoogleWebAuthorizationBroker.AuthorizeAsync(
 GoogleClientSecrets.Load(stream).Secrets,
 new[] { AnalyticsService.Scope.AnalyticsReadonly },
 "user", CancellationToken.None, StoredRefreshToken).Result;
}

点击此处查看Idatastore限制的基本示例。 Google Oauth loading stored refresh token

<强>更新

可在GitHub Google-Dotnet-Samples / Authentication / Diamto.Google.Authentication

上的身份验证示例项目中找到此版本的多个版本

更新2

更新了database datastore exmaples

Answer 5

我们的Web应用托管在Azure上，因此我需要为此创建一个IDataStore。

我使用Azure表存储作为我们的数据存储。

这里是gist of my attempt

欢迎反馈和建议

Google .NET API - 除FileDataStore之外的任何其他DataStore？

5 个答案: