http端点不与elsa err_connection_refuse使用

Question

我尝试在.NET标准6.0中创建Web应用程序，并为HTTP Endpoint请求添加了一个简单的工作流程＆amp;回答。 但是服务器URL返回err_connection_refused用URL（https：// localhost：5001/data）。 我添加了我的源代码详细信息，请让我知道是否需要了解该问题。

我正在使用.NET Standard 6.0和Elsa 2.6

Program.cs

using Elsa;
using Elsa.Persistence.EntityFramework.Core.Extensions;
using Elsa.Persistence.EntityFramework.Sqlite;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;

using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;

var builder = WebApplication.CreateBuilder(args);
var elsaSection = builder.Configuration.GetSection("Elsa");

// Elsa services.
builder.Services
    .AddElsa(elsa => elsa
        .UseEntityFrameworkPersistence(ef => ef.UseSqlite())
        .AddConsoleActivities()
        .AddHttpActivities(elsaSection.GetSection("Server").Bind)
        .AddQuartzTemporalActivities()
        .AddWorkflowsFrom<Startup>()
    );

// Elsa API endpoints.
builder.Services.AddElsaApiEndpoints();
builder.Services.AddCors(cors => cors.AddDefaultPolicy(policy => policy
    .AllowAnyHeader()
    .AllowAnyMethod()
    .AllowAnyOrigin()
    .WithExposedHeaders("Content-Disposition"))
);
// For Dashboard.
builder.Services.AddRazorPages();
var app = builder.Build();
if (app.Environment.IsDevelopment())
{
    app.UseDeveloperExceptionPage();
}

app
    .UseStaticFiles() 
    .UseCors()
    .UseHttpActivities()
    .UseRouting()
    .UseEndpoints(endpoints =>
    {
        // Elsa API Endpoints are implemented as regular ASP.NET Core API controllers.
        endpoints.MapControllers();

        // For Dashboard.
        endpoints.MapFallbackToPage("/_Host");
    });


app.Run();

---

AppSetting.json

  "Elsa": {
    "Server": {
      "BaseUrl": "https://localhost:5001"
    }
  }
}
--------------------------------------------------------------
Exported workflow details

{
  "$id": "1",
  "definitionId": "77bbdbc2d83e402082292c26a054cdce",
  "versionId": "2f40a957f6474d9f9a6291116407bda3",
  "name": "data",
  "displayName": "data",
  "version": 1,
  "variables": {
    "$id": "2",
    "data": {}
  },
  "customAttributes": {
    "$id": "3",
    "data": {}
  },
  "isSingleton": false,
  "persistenceBehavior": "WorkflowBurst",
  "deleteCompletedInstances": false,
  "isPublished": true,
  "isLatest": true,
  "activities": [
    {
      "$id": "4",
      "activityId": "e7685474-cbb7-44af-b15c-72d68897f537",
      "type": "HttpEndpoint",
      "displayName": "HTTP Endpoint",
      "persistWorkflow": false,
      "loadWorkflowContext": false,
      "saveWorkflowContext": false,
      "properties": [
        {
          "$id": "5",
          "name": "Path",
          "expressions": {
            "$id": "6",
            "Literal": "/data"
          }
        },
        {
          "$id": "7",
          "name": "Methods",
          "expressions": {
            "$id": "8",
            "Json": "[\"GET\"]"
          }
        },
        {
          "$id": "9",
          "name": "ReadContent",
          "expressions": {
            "$id": "10"
          }
        },
        {
          "$id": "11",
          "name": "TargetType",
          "expressions": {
            "$id": "12"
          }
        },
        {
          "$id": "13",
          "name": "Schema",
          "syntax": "Literal",
          "expressions": {
            "$id": "14",
            "Literal": ""
          }
        },
        {
          "$id": "15",
          "name": "Authorize",
          "expressions": {
            "$id": "16"
          }
        },
        {
          "$id": "17",
          "name": "Policy",
          "expressions": {
            "$id": "18"
          }
        }
      ],
      "propertyStorageProviders": {}
    },
    {
      "$id": "19",
      "activityId": "e447ad59-8482-43ed-958d-2f044b6ac672",
      "type": "WriteHttpResponse",
      "displayName": "HTTP Response",
      "persistWorkflow": false,
      "loadWorkflowContext": false,
      "saveWorkflowContext": false,
      "properties": [
        {
          "$id": "20",
          "name": "Content",
          "expressions": {
            "$id": "21"
          }
        },
        {
          "$id": "22",
          "name": "ContentType",
          "expressions": {
            "$id": "23"
          }
        },
        {
          "$id": "24",
          "name": "StatusCode",
          "expressions": {
            "$id": "25",
            "Literal": "OK"
          }
        },
        {
          "$id": "26",
          "name": "CharSet",
          "expressions": {
            "$id": "27",
            "Literal": "utf-8"
          }
        },
        {
          "$id": "28",
          "name": "ResponseHeaders",
          "expressions": {
            "$id": "29",
            "Literal": "data"
          }
        }
      ],
      "propertyStorageProviders": {}
    }
  ],
  "connections": [
    {
      "$id": "30",
      "sourceActivityId": "e7685474-cbb7-44af-b15c-72d68897f537",
      "targetActivityId": "e447ad59-8482-43ed-958d-2f044b6ac672",
      "outcome": "Done"
    }
  ],
  "id": "2f40a957f6474d9f9a6291116407bda3"
}````

Thanks in advance.

Answer 1

当您想要调用 HTTP 端点时，您需要使用与托管 Elsa 的端口相同的端口。

例如，如果您有一个 HTTP Endpoint 活动，配置了 /start 作为其路径，并且您的 Web 应用托管在 https://localhost:7095/，那么您需要发出请求 https://localhost:7095/start

注意

可以配置用于侦听子路径的 HTTP 端点中间件（建议中间件不要尝试匹配每个和针对工作流程的每个请求）。如果是这种情况，请确保也包含此路径。

例如，如果您执行了以下操作：

elsa.AddHttpActivities(options => options.BasePath = "/workflows");

则 HTTP 端点的路径为：https://localhost:7095/workflows/start

Answer 2

ERR_CONNECTION_REFUSED 在端口 5001 中给我们带来的问题是，当我们遵循大多数教程时，我们会默认保留 ELSA 的端口 5000 和/或 5001，并且当我们创建 ASP.NET Core 项目时（至少对于命令行）位置 5000 和 5001 默认被占用，这就是它冲突的原因。

为了解决这个问题，我们必须进入Properties文件夹，在我们的ASP.NET Web项目的launchSettings.json文件中，在属性中更改端口，这样就可以解决冲突。

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