Azure Functions中的参考Cosmos DB nuget程序包

Question

我正在尝试在我的Azure Function应用中使用Cosmos DB Document客户端。我已遵循此处提到的步骤-How can I use NuGet packages in my Azure Functions?

我在project.json-中有依赖项

{
  "frameworks": {
    "net46":{
      "dependencies": {
        "Microsoft.Azure.DocumentDB.Core": "2.1.3"
      }
    }
   }
}

project.json放置在功能应用程序内部，并且应用程序服务编辑器路径如下-

https://<functionappname>.scm.azurewebsites.net/dev/wwwroot/<functionname>/project.json

这是我的功能代码-

#r "Newtonsoft.Json"
#r "Microsoft.Azure.Documents.Client"

using System.Net;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Primitives;
using Newtonsoft.Json;

using System.Net.Http;
using System.Threading.Tasks;
using System.Net.Http.Formatting;
using System.Threading;
using Microsoft.Azure.Documents;
using Microsoft.Azure.Documents.Client;


public static async Task<IActionResult> Run(HttpRequest req, ILogger log)
{
    string endPoint = <ep>;
    string databaseId = <dbID>;
    string collectionId = <cid>;
    string documentId = <did>;
    string resourceLink = string.Format("dbs/{0}/colls/{1}/docs/{2}", databaseId, collectionId, documentId);
    string primaryKey = <pk>;
    IDocumentClient documentClient = new DocumentClient(new Uri(endPoint), primaryKey);

    var response = documentClient.ReadDocumentAsync(resourceLink).Result;
    return new OkObjectResult(response);
}

当我保存并运行该应用程序时，没有收到任何错误或响应。如果我删除CosmosDB参考代码，它将起作用。下面是代码-

#r "Newtonsoft.Json"

using System.Net;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Primitives;
using Newtonsoft.Json;

using System.Net.Http;
using System.Threading.Tasks;
using System.Net.Http.Formatting;
using System.Threading;


public static async Task<IActionResult> Run(HttpRequest req, ILogger log)
{
    return new OkObjectResult("response");
}

我错过了什么还是做错了吗？如果在控制台应用程序上使用相同的代码，则可以使用。请帮忙吗？

Answer 1

要在门户网站中工作，如果添加带有Cosmos DB Trigger的功能会更容易，这会将Cosmos DB扩展名拉入Function App，然后可以删除创建的Function并创建一个新功能并拉出DocumentClient：

添加扩展后，您可以拉客户端在函数代码顶部添加#r "Microsoft.Azure.DocumentDB.Core"：

#r "Newtonsoft.Json"
#r "Microsoft.Azure.DocumentDB.Core"

using System.Net;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Primitives;
using Newtonsoft.Json;
using Microsoft.Azure.Documents;
using Microsoft.Azure.Documents.Client;

private static DocumentClient client = new DocumentClient(new Uri("yourendpoint"), "yourkey");


public static async Task<IActionResult> Run(HttpRequest req, ILogger log)
{
    log.LogInformation("C# HTTP trigger function processed a request.");

    string name = req.Query["name"];

    string requestBody = await new StreamReader(req.Body).ReadToEndAsync();
    dynamic data = JsonConvert.DeserializeObject(requestBody);
    name = name ?? data?.name;

    return name != null
        ? (ActionResult)new OkObjectResult($"Hello, {name}")
        : new BadRequestObjectResult("Please pass a name on the query string or in the request body");
}

Answer 2

Function 2.0如下使用function.proj。

<Project Sdk="Microsoft.NET.Sdk">
    <PropertyGroup>
        <TargetFramework>netstandard2.0</TargetFramework>
    </PropertyGroup>
    <ItemGroup>
        <PackageReference Include="Microsoft.Azure.DocumentDB.Core" Version="2.1.3"/>
    </ItemGroup>
</Project>

并在添加程序集后删除多余的#r "Microsoft.Azure.Documents.Client"。