Azure函数返回500个内部服务器错误

Question

我正在尝试从“ Mastering Xamarin.Forms”第三版中进行练习。我已按照书中的说明通过门户添加功能应用程序。

run.csx文件看起来像这样：

#r "Newtonsoft.Json"
#r "Microsoft.WindowsAzure.Storage"
using System.Net;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Primitives;
using Microsoft.WindowsAzure.Storage;
using Microsoft.WindowsAzure.Storage.Table;
using Newtonsoft.Json;

public static async Task<IActionResult> Run(HttpRequest req, Newtonsoft.Json.Linq.JArray entryTableInput, IAsyncCollector<Entry> entryTableOutput, ILogger log)
{
    log.LogInformation(req.Method);
    if (req.Method == "GET")
    {
        return (ActionResult) new OkObjectResult(entryTableInput);
    }
    var requestBody = await new StreamReader(req.Body).ReadToEndAsync();
    var entry = JsonConvert.DeserializeObject<Entry>(requestBody);

    if (entry != null)
    {
                await entryTableOutput.AddAsync(entry);
        return (ActionResult) new OkObjectResult(entry);
    }
    return new BadRequestObjectResult("Invalid entry request.");
}
public class Entry
{
    public string Id => Guid.NewGuid().ToString("n");
    public string Title { get; set; }
    public double Latitude { get; set; }
    public double Longitude { get; set; }
    public DateTime Date { get; set; }
    public int Rating { get; set; }
    public string Notes { get; set; }
    // Required for Table Storage entities
    public string PartitionKey => "ENTRY";
    public string RowKey => Id;
}

The function.json：

{
  "bindings": [
    {
      "authLevel": "anonymous",
      "name": "req",
      "type": "httpTrigger",
      "direction": "in"
    },
    {
      "name": "$return",
      "type": "http",
      "direction": "out"
    },
    {
      "type": "table",
      "name": "entryTableOutput",
      "tableName": "entry",
      "connection": "AzureWebJobStorage",
      "direction": "out"
    },
    {
      "type": "table",
      "name": "entryTableInput",
      "tableName": "entry",
      "take": 50,
      "connection": "AzureWebJobsStorage",
      "direction": "in"
    }
  ],
  "disabled": false
}

我正在使用邮递员来测试请求。 GET和POST都返回500内部服务器错误。我不知道下一步该怎么做。

Answer 1

我首先尝试在本地运行该函数并在该函数内设置断点。然后，您可以使用Postman触发该功能，逐步调试，然后查看问题所在。将Azure功能部署到Azure时，我还建议启用应用程序见解，您可以使用它来查看引发的异常的详细信息。