使用 Web API 的服务根 URL 访问 CRM Dynamics 365 数据

Question

我的问题是在 RESTful 服务中访问 Dynamics CRM 365 数据。

我想在 RESTful 服务中使用 Dynamics CRM 数据。此 RESTful 服务将用于 WCF 服务，以将移动应用程序连接到 CRM 数据访问。

我已经阅读了以下参考资料，但看起来其中任何一个都不适合我。在这里，我想尽量避免使用 Azure。

对于上述要求，我尝试了以下参考中提供的 CODE： Ref 1: Microsoft CRM Web API Query Data Sample (CS), 但这也给出了附加的错误 screenshot

错误区域：在 Program.cs 文件中 - 当它尝试获取结果时，会在下面的代码行中引发错误：

HttpResponseMessage response = SendAsJsonAsync(httpClient, HttpMethod.Post,
            "accounts", account1).Result;

如果上面共享为 Ref 1 的链接是正确的方法，那么我应该如何获取 ClientId 和 RedirectUrl？

Answer 1

这是使用 Microsoft 示例对 CRM 进行身份验证的代码：

public class CrmConnector
{
    private const string ApiVersion = "v8.2";

    public static HttpClient Client { get; set; }

    public CrmConnector(FileConfiguration config)
    {
        if (Client == null)
        {
            Task.WaitAll(Task.Run(async () => await ConnectToCRM(config)));
        }
    }

    /// <summary>
    /// Obtains the connection information from the application's configuration file, then 
    /// uses this info to connect to the specified CRM service.
    /// </summary>
    protected virtual async Task ConnectToCRM(Configuration config)
    {
        Authentication auth = new Authentication(config);
        Client = new HttpClient(auth.ClientHandler, true);
        Client.BaseAddress = new Uri($"{config.ServiceUrl}api/data/{ApiVersion}/");
        Client.Timeout = new TimeSpan(0, 2, 0);
        Client.DefaultRequestHeaders.Add("OData-MaxVersion", "4.0");
        Client.DefaultRequestHeaders.Add("OData-Version", "4.0");
        Client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
    }
}

要传递配置文件，如下所示：

<?xml version="1.0" encoding="utf-8"?>
<configuration>

  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />
  </startup>

  <connectionStrings>
    <clear />

    <!-- When providing a password, make sure to set the app.config file's security so that only you can read it. -->
    <add name="default"   connectionString="Url=ORG; Username=USER; Password=PASS; Domain=DOMAIN" />
    <add name="CrmOnline" connectionString="Url=https://mydomain.crm.dynamics.com/; Username=someone@mydomain.onmicrosoft.com; Password=password" />
  </connectionStrings>

  <appSettings>
    <!--For information on how to register an app and obtain the ClientId and RedirectUrl
        values see https://msdn.microsoft.com/dynamics/crm/mt149065 -->

    <!--Active Directory application registration. -->
    <!--These are dummy values and should be replaced with your actual app registration values.-->
    <add key="ClientId" value="CLIENTID" />
    <!--<add key="RedirectUrl" value="http://localhost/SdkSample" />-->

    <!-- Use an alternate configuration file for connection string and setting values. This optional setting
    enables use of an app.config file shared among multiple applications. If the specified file does
    not exist, this setting is ignored.-->
    <add key="AlternateConfig" value="C:\Temp\crmsample.exe.config"/>
  </appSettings>

</configuration>

您可以从组织中的开发人员资源中获取您的 clientId，redirectUrl 是可选的，您可以像这样使用该对象：

CrmConnector CrmConnector = new CrmConnector(new FileConfiguration(null));

并提出请求：

public const string OdataAnnotationAll = "odata.include-annotations=*";

protected virtual async Task<HttpResponseMessage> RequestCRMAsync(HttpMethod method, string query, string pag, bool annotations)
{
    HttpRequestMessage request = new HttpRequestMessage(method, query);
    request.Headers.Add("Prefer", "odata.maxpagesize=" + pag);

    if (annotations)
    {
        request.Headers.Add("Prefer", OdataAnnotationAll);
    }

    return await CrmConnector.Client.SendAsync(request);
}

阅读回复：

using Newtonsoft.Json;

public virtual async Task<JObject> RequestCRM(HttpMethod method, string query, string pag, bool annotations)
{
    JObject responseObject = new JObject();
    HttpResponseMessage response = await RequestCRMAsync(method, query, pag, annotations);

    if (response.StatusCode == HttpStatusCode.OK || response.StatusCode == HttpStatusCode.NoContent)
    {
        responseObject = JsonConvert.DeserializeObject<JObject>(response.Content.ReadAsStringAsync().Result);
    }
    else
    {
        throw new CrmHttpResponseException(response.Content);
    }

    return responseObject;
}

如果您要进行创建或更新，则必须在正文中发送参数：

JObject data = new JObject();
data.Add("firstname", "Sxntk");
data.Add("lastname", "IG");
data.Add("annualincome", "1000000000");
request.Content = new StringContent(data.ToString(), Encoding.UTF8, "application/json");

如果是创建或更新，guid 将出现在此标头中：

protected virtual string GetGuidFromResponse(HttpResponseMessage response)
{
    string RegexGuid = @"(\{){0,1}[0-9a-fA-F]{8}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{4}\-[0-9a-fA-F]{12}(\}){0,1}";

    // Get the url -> http://~/entity(guid)
    var urlHeader = response.Headers.FirstOrDefault(x => x.Key == "OData-EntityId");

    //Type of this is KeyPairValue
    if (urlHeader.Value == null)
    {
        return null;
    }

    // Get the guid form url
    return Regex.Matches(urlHeader.Value.FirstOrDefault(), RegexGuid)?[0].Value;
}

更新 http 方法是 PATCH 而不是 POST。

来自 microsoft 帮助程序的类是 Authentication、Configuration、Exceptions 和 CrmConnector 已修改。