我们可以访问使用服务帐户GMAIL API？ [英] Can we access GMAIL API using Service Account?

问题描述

我有一个桌面应用程序使用Gmail API通过REST接口读取邮件。我想使用的服务帐户，以便我们可以下载使用域设置邮件和用户交互为空。我能够成功创建Gmail服务的实例，但是，当我尝试访问Gmail任何API方法像提取邮件列表或任何其他我得到一个异常说

I have a desktop application to read mail using GMAIL API over REST Interface. I want to use service account so that we can download the mails using domain setting and user interaction is null. I am successfully able to create Gmail Service instance but when I try to access any Gmail API method like fetching mail list or any other I get an exception saying

Google.Apis.Auth.OAuth2.Responses.TokenResponseException：
  错误：ACCESS_DENIED简介：请求的客户端不
  授权。

Google.Apis.Auth.OAuth2.Responses.TokenResponseException: Error:"access_denied", Description:"Requested client not authorized."

我与开发者控制台，所有的设置完成，添加范围来我GAPPS域。

I am done with all the setting at developer console and added scopes to my gapps domain.

Gmail是否API支持服务的帐户？使用我可以使用驱动器的服务和API来获取在谷歌驱动器的所有文件列表相同的设置和服务帐户。

Does Gmail API support service account? Using the same setting and service account I am able to get list of all files in Google drive using Drive service and API.

推荐答案

我用下面的C＃code从服务帐户访问Gmail

I use the following C# code for accessing Gmail from Service Account

String serviceAccountEmail =
    "[e-mail]";

var certificate = new X509Certificate2(
    AppDomain.CurrentDomain.BaseDirectory +
        "certs//fe433c710f4980a8cc3dda83e54cf7c3bb242a46-privatekey.p12",
    "notasecret",
    X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.Exportable);

string userEmail = "[e-mail]";

ServiceAccountCredential credential = new ServiceAccountCredential(
    new ServiceAccountCredential.Initializer(serviceAccountEmail)
    {
        User = userEmail,
        Scopes = new[] { "https://mail.google.com/" }
    }.FromCertificate(certificate)
);

if (credential.RequestAccessTokenAsync(CancellationToken.None).Result)
{   
    GmailService gs = new GmailService(
        new Google.Apis.Services.BaseClientService.Initializer()
        {
            ApplicationName = "iLink",
            HttpClientInitializer = credential
        }
    );

    UsersResource.MessagesResource.GetRequest gr =
        gs.Users.Messages.Get(userEmail, msgId);
    gr.Format = UsersResource.MessagesResource.GetRequest.FormatEnum.Raw;
    Message m = gr.Execute();

    if (gr.Format == UsersResource.MessagesResource.GetRequest.FormatEnum.Raw)
    {
        byte[] decodedByte = FromBase64ForUrlString(m.Raw);
        string base64Encoded = Convert.ToString(decodedByte);
        MailMessage msg = new MailMessage();
        msg.LoadMessage(decodedByte);
    }
}

这篇关于我们可以访问使用服务帐户GMAIL API？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！