希望谷歌有一天能够提供适当的文档。在这里，我列出了将Google Analytics服务器端身份验证集成到ASP.NET C#中的所有步骤。
第1步：在Google控制台中创建项目
访问链接https://console.developers.google.com/iam-admin/projects并通过单击“创建项目”按钮并在弹出窗口中提供项目名称来创建项目。
第2步：创建凭据和服务账号
创建项目后，您将被重定向到“API管理器”页面。单击凭据并按“创建凭据”按钮。从下拉菜单中选择“服务帐户密钥”，您将被重定向到下一页。在服务帐户下拉列表中，选择“新服务帐户”。填写服务帐户名称并下载p12密钥。它将具有p12扩展名。您将获得一个弹出窗口，其中包含默认密码“notasecret”，并且您的私钥将被下载。
第3步：创建0auth客户端ID
单击“创建凭据”下拉列表并选择“0auth客户端ID”，您将被重定向到“0auth同意屏幕”选项卡。在项目名称文本框中提供一个随机名称。将应用程序类型选择为“Web应用程序”，然后单击创建按钮。将生成的客户端ID复制到记事本中。
第4步：启用API
在左侧单击“概述”选项卡，然后从水平选项卡中选择“已启用的API”。在搜索栏中搜索“Analytics API”，单击下拉菜单并按“启用”按钮。现在再次搜索“Analytics Reporting V4”并启用它。
第5步：安装Nuget包
在Visual Studio中，转到工具> Nuget包管理器> 包管理器控制台。将以下代码复制并粘贴到控制台中以安装nuget包。
Install-Package Google.Apis.Analytics.v3
Install-Package DotNetOpenAuth.Core -Version 4.3.4.13329
以上两个包是Google Analytics和DotNetOpenAuth nuget包。
第6步：向服务帐户提供“查看和分析”权限
进入Google Analytics帐户，单击“管理”选项卡，然后从左侧菜单中选择“用户管理”，选择要访问分析数据的域，并在其中插入服务帐户电子邮件ID，并从下拉菜单中选择“读取和分析”权限。服务帐户电子邮件ID类似于ex：googleanalytics@googleanalytics.iam.gserviceaccount.com。
工作代码
前端代码：
将以下Analytics嵌入脚本复制并粘贴到前端，或者您还可以从Google Analytics文档页面获取此代码。
<script>
(function (w, d, s, g, js, fs) {
g = w.gapi || (w.gapi = {}); g.analytics = { q: [], ready: function (f) { this.q.push(f); } };
js = d.createElement(s); fs = d.getElementsByTagName(s)[0];
js.src = 'https://apis.google.com/js/platform.js';
fs.parentNode.insertBefore(js, fs); js.onload = function () { g.load('analytics'); };
}(window, document, 'script'));</script>
将以下代码粘贴到您前端页面的body标签中。
<asp:HiddenField ID="accessToken" runat="server" />
<div id="chart-1-container" style="width:600px;border:1px solid #ccc;"></div>
<script>
var access_token = document.getElementById('<%= accessToken.ClientID%>').value;
gapi.analytics.ready(function () {
gapi.analytics.auth.authorize({
'serverAuth': {
'access_token': access_token
}
});
var dataChart1 = new gapi.analytics.googleCharts.DataChart({
query: {
'ids': 'ga:53861036',
'start-date': '2016-04-01',
'end-date': '2016-04-30',
'metrics': 'ga:sessions',
'dimensions': 'ga:date'
},
chart: {
'container': 'chart-1-container',
'type': 'LINE',
'options': {
'width': '100%'
}
}
});
dataChart1.execute();
});
</script>
您还可以从https://ga-dev-tools.appspot.com/account-explorer/获取您的视图ID。
后端代码：
using System;
using System.Linq;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Web.Script.Serialization;
using System.Net;
using System.Text;
using Google.Apis.Analytics.v3;
using Google.Apis.Analytics.v3.Data;
using Google.Apis.Services;
using System.Security.Cryptography.X509Certificates;
using Google.Apis.Auth.OAuth2;
using Google.Apis.Util;
using DotNetOpenAuth.OAuth2;
using System.Security.Cryptography;
namespace googleAnalytics
{
public partial class api : System.Web.UI.Page
{
public const string SCOPE_ANALYTICS_READONLY = "https://www.googleapis.com/auth/analytics.readonly";
string ServiceAccountUser = "googleanalytics@googleanalytics.iam.gserviceaccount.com";
string keyFile = @"D:\key.p12";
protected void Page_Load(object sender, EventArgs e)
{
string Token = Convert.ToString(GetAccessToken(ServiceAccountUser, keyFile, SCOPE_ANALYTICS_READONLY));
accessToken.Value = Token;
var certificate = new X509Certificate2(keyFile, "notasecret", X509KeyStorageFlags.Exportable);
var credentials = new ServiceAccountCredential(
new ServiceAccountCredential.Initializer(ServiceAccountUser)
{
Scopes = new[] { AnalyticsService.Scope.AnalyticsReadonly }
}.FromCertificate(certificate));
var service = new AnalyticsService(new BaseClientService.Initializer()
{
HttpClientInitializer = credentials,
ApplicationName = "Google Analytics API"
});
string profileId = "ga:53861036";
string startDate = "2016-04-01";
string endDate = "2016-04-30";
string metrics = "ga:sessions,ga:users,ga:pageviews,ga:bounceRate,ga:visits";
DataResource.GaResource.GetRequest request = service.Data.Ga.Get(profileId, startDate, endDate, metrics);
GaData data = request.Execute();
List<string> ColumnName = new List<string>();
foreach (var h in data.ColumnHeaders)
{
ColumnName.Add(h.Name);
}
List<double> values = new List<double>();
foreach (var row in data.Rows)
{
foreach (var item in row)
{
values.Add(Convert.ToDouble(item));
}
}
values[3] = Math.Truncate(100 * values[3]) / 100;
txtSession.Text = values[0].ToString();
txtUsers.Text = values[1].ToString();
txtPageViews.Text = values[2].ToString();
txtBounceRate.Text = values[3].ToString();
txtVisits.Text = values[4].ToString();
}
public static dynamic GetAccessToken(string clientIdEMail, string keyFilePath, string scope)
{
var certificate = new X509Certificate2(keyFilePath, "notasecret");
var header = new { typ = "JWT", alg = "RS256" };
var times = GetExpiryAndIssueDate();
var claimset = new
{
iss = clientIdEMail,
scope = scope,
aud = "https://accounts.google.com/o/oauth2/token",
iat = times[0],
exp = times[1],
};
JavaScriptSerializer ser = new JavaScriptSerializer();
var headerSerialized = ser.Serialize(header);
var headerBytes = Encoding.UTF8.GetBytes(headerSerialized);
var headerEncoded = Convert.ToBase64String(headerBytes);
var claimsetSerialized = ser.Serialize(claimset);
var claimsetBytes = Encoding.UTF8.GetBytes(claimsetSerialized);
var claimsetEncoded = Convert.ToBase64String(claimsetBytes);
var input = headerEncoded + "." + claimsetEncoded;
var inputBytes = Encoding.UTF8.GetBytes(input);
var rsa = certificate.PrivateKey as RSACryptoServiceProvider;
var cspParam = new CspParameters
{
KeyContainerName = rsa.CspKeyContainerInfo.KeyContainerName,
KeyNumber = rsa.CspKeyContainerInfo.KeyNumber == KeyNumber.Exchange ? 1 : 2
};
var aescsp = new RSACryptoServiceProvider(cspParam) { PersistKeyInCsp = false };
var signatureBytes = aescsp.SignData(inputBytes, "SHA256");
var signatureEncoded = Convert.ToBase64String(signatureBytes);
var jwt = headerEncoded + "." + claimsetEncoded + "." + signatureEncoded;
var client = new WebClient();
client.Encoding = Encoding.UTF8;
var uri = "https://accounts.google.com/o/oauth2/token";
var content = new NameValueCollection();
content["assertion"] = jwt;
content["grant_type"] = "urn:ietf:params:oauth:grant-type:jwt-bearer";
string response = Encoding.UTF8.GetString(client.UploadValues(uri, "POST", content));
var result = ser.Deserialize<dynamic>(response);
object pulledObject = null;
string token = "access_token";
if (result.ContainsKey(token))
{
pulledObject = result[token];
}
return pulledObject;
}
private static int[] GetExpiryAndIssueDate()
{
var utc0 = new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc);
var issueTime = DateTime.UtcNow;
var iat = (int)issueTime.Subtract(utc0).TotalSeconds;
var exp = (int)issueTime.AddMinutes(55).Subtract(utc0).TotalSeconds;
return new[] { iat, exp };
}
}
}
