Google+使用google-api-dotnet-client插入片刻

时间:2013-03-07 04:55:55

标签: google-api google-plus google-api-dotnet-client

我正在尝试使用dotnet-client在Google+中撰写活动。问题是我似乎无法正确获取客户端应用程序的配置。根据{{​​3}}和Google+ Sign-In configuration,我们需要添加requestvisibleactions参数。我这样做但是没有用。我正在使用范围https://www.googleapis.com/auth/plus.login,我甚至添加了范围https://www.googleapis.com/auth/plus.moments.write,但插入仍然无效。

这是我的请求网址:

https://accounts.google.com/ServiceLogin?service=lso&passive=1209600&continue=https://accounts.google.com/o/oauth2/auth?scope%3Dhttps://www.googleapis.com/auth/plus.login%2Bhttps://www.googleapis.com/auth/plus.moments.write%26response_type%3Dcode%26redirect_uri%3Dhttp://localhost/%26state%3D%26requestvisibleactions%3Dhttp://schemas.google.com/AddActivity%26client_id%3D000.apps.googleusercontent.com%26request_visible_actions%3Dhttp://schemas.google.com/AddActivity%26hl%3Den%26from_login%3D1%26as%3D-1fbe06f1c6120f4d&ltmpl=popup&shdf=Cm4LEhF0aGlyZFBhcnR5TG9nb1VybBoADAsSFXRoaXJkUGFydHlEaXNwbGF5TmFtZRoHQ2hpa3V0bwwLEgZkb21haW4aB0NoaWt1dG8MCxIVdGhpcmRQYXJ0eURpc3BsYXlUeXBlGgdERUZBVUxUDBIDbHNvIhTeWybcoJ9pXSeN2t-k8A4SUbfhsygBMhQivAmfNSs_LkjXXZ7bPxilXgjMsQ&scc=1

从那里你可以看到有一个request_visible_actions,我甚至添加了一个没有下划线的情况,以防我得到错误的参数(requestvisibleactions)。

我想说我的应用程序正在通过API成功验证。我可以在经过身份验证后获取用户的个人资料,并且它位于我的应用程序失败的“插入时刻”部分。我的插入代码:

        var body = new Moment();
        var target = new ItemScope();
        target.Id = referenceId;
        target.Image = image;
        target.Type = "http://schemas.google.com/AddActivity";
        target.Description = description;
        target.Name = caption;

        body.Target = target;
        body.Type = "http://schemas.google.com/AddActivity";

        var insert =
            new MomentsResource.InsertRequest(
                // this is a valid service instance as I am using this to query the user's profile
                _plusService,
                body,
                id,
                MomentsResource.Collection.Vault);

        Moment result = null;
        try
        {
            result = insert.Fetch();
        }
        catch (ThreadAbortException)
        {
            // User was not yet authenticated and is being forwarded to the authorization page.
            throw;
        }
        catch (Google.GoogleApiRequestException requestEx)
        {                
            // here I get a 401 Unauthorized error

        }
        catch (Exception ex)
        {

        }            `

2 个答案:

答案 0 :(得分:2)

对于OAuth流程,您的请求存在两个问题:

  • request_visible_actions是传递给OAuth v2服务器的内容(不通过requestvisibleactions)
  • plus.moments.write是不推荐使用的范围,您只需要传入plus.login

确保您的项目从此处引用最新版本的Google+ .NET客户端库:

https://developers.google.com/resources/api-libraries/download/stable/plus/v1/csharp

我在GitHub上创建了一个项目,显示了一个完整的服务器端流程:

https://github.com/gguuss/gplus_csharp_ssflow

正如Brettj所说,你应该使用Google+登录按钮,如最新的Google+样本所示:

https://github.com/googleplus/gplus-quickstart-csharp

首先,确保您正在请求您正在撰写的所有活动类型。您将知道这是有效的,因为授权对话框将显示“通过Google提供您的应用活动,对您可见并且:[...]”在以“此应用想要”开头的文本下方。我知道你检查了这个,但我90%肯定这就是你得到401错误代码的原因。以下标记显示了如何呈现Google+登录按钮,请求访问添加活动。

<div id="gConnect">
<button class="g-signin"
    data-scope="https://www.googleapis.com/auth/plus.login"
    data-requestvisibleactions="http://schemas.google.com/AddActivity"
    data-clientId="YOUR_CLIENT_ID"
    data-accesstype="offline"
    data-callback="onSignInCallback"
    data-theme="dark"
    data-cookiepolicy="single_host_origin">
</button>

假设您有一个在data-requestvisibleactions中设置了正确活动类型的PlusService对象,您应该能够复制/粘贴以查看它的以下代码,使用.NET客户端简明地演示写入时刻测试工作:

Moment body = new Moment();
ItemScope target = new ItemScope();

target.Id = "replacewithuniqueforaddtarget";
target.Image = "http://www.google.com/s2/static/images/GoogleyEyes.png";
target.Type = "";
target.Description = "The description for the activity";
target.Name = "An example of add activity";

body.Target = target;
body.Type = "http://schemas.google.com/AddActivity";

MomentsResource.InsertRequest insert =
    new MomentsResource.InsertRequest(
        _plusService,
        body,
        "me",
        MomentsResource.Collection.Vault);
Moment wrote = insert.Fetch();

注意,为方便起见,我包括Google.Apis.Plus.v1.Data。

答案 1 :(得分:1)

啊,就这么简单!也许不吧?我正在回答我自己的问题,因此接受它作为答案(在课程结束几天之后),因此可能会引导具有相同问题的其他人。但我肯定会对Gus的回答进行投票,因为它导致我修复了我的代码。

因此,根据上面写的@class答案和explained on his blog,成功创建片刻的关键是添加request_visible_actions参数。我做到了,但我的要求仍然失败,这是因为我错过了一件重要的事情。您需要再添加一个参数,即 access_type ,并且应将其设置为 offline 。 OAuth请求至少应如下所示: https://accounts.google.com/o/oauth2/auth?scope=https://www.googleapis.com/auth/plus.login&response_type=code&redirect_uri=http://localhost/ &amp; request_visible_actions = http://schemas.google.com/AddActivity&access_type=offline

对于完整且正确的客户端代码,您可以get Gus' example heredownload the entire dotnet client library including the source and sample添加我在下面添加的内容。您应该记住的最重要的事情是修改Google API的AuthorizationServerDescription。这是我的身份验证器版本:

public static OAuth2Authenticator<WebServerClient> CreateAuthenticator(
        string clientId, string clientSecret)
{
    if (string.IsNullOrWhiteSpace(clientId))
        throw new ArgumentException("clientId cannot be empty");

    if (string.IsNullOrWhiteSpace(clientSecret))
        throw new ArgumentException("clientSecret cannot be empty");

    var description = GoogleAuthenticationServer.Description;

    var uri = description.AuthorizationEndpoint.AbsoluteUri;
    // This is the one that has been documented on Gus' blog site 
    // and over at Google's (https://developers.google.com/+/web/signin/)
    // This is not in the dotnetclient sample by the way 
    // and you need to understand how OAuth and DNOA works.
    // I had this already, see my original post, 
    // I thought it will make my day.
    if (uri.IndexOf("request_visible_actions") < 1)
    {
        var param = (uri.IndexOf('?') > 0) ? "&" : "?";
        description.AuthorizationEndpoint = new Uri(
            uri + param +
            "request_visible_actions=http://schemas.google.com/AddActivity");
    }

    // This is what I have been missing! 
    // They forgot to tell us about this or did I just miss this somewhere?
    uri = description.AuthorizationEndpoint.AbsoluteUri;
    if (uri.IndexOf("offline") < 1)
    {
        var param = (uri.IndexOf('?') > 0) ? "&" : "?";
        description.AuthorizationEndpoint = 
                new Uri(uri + param + "access_type=offline");
    }

    // Register the authenticator.
    var provider = new WebServerClient(description)
    {
        ClientIdentifier = clientId,
        ClientSecret = clientSecret,                  
    };            
    var authenticator =
        new OAuth2Authenticator<WebServerClient>(provider, GetAuthorization)
                 { NoCaching = true };
    return authenticator;
}

如果没有 access_type=offline ,我的代码永远不会工作,它永远不会有用。现在我想知道为什么?有一些解释会很好。