Edge.js 从 expandoobject 转换为字符串

Question

我正在尝试使用 Tomasz Janczuk 出色的 edgejs 库从第 3 方 dll 调用函数。根据我收到的错误消息，代码可能是也可能不是 returning 信息。我得到的错误消息（见下文）说代码需要一个字符串，但取回了一个 ExpandoObject。我已经根据 edgejs github 页面上的示例尝试了此代码的几个不同版本，但所有版本 return 都出现了相同的错误。该错误表明这只是将 expandoobject 转换为字符串的问题，但到目前为止我没有成功。对此问题的任何帮助将不胜感激。我一直在努力让它工作的时间比我承认的要长。

基于 edgejs 110_clr_instance.js 示例的代码 github:

var edge = require('edge');

var createSerial = edge.func({
    source: {/*
    using System;
    using System.Threading.Tasks;

    public class Startup
    {
        public async Task<object> Invoke(string location)
        {
            var serial = new Serial(location);
            return new {
                validateLocation = (Func<object,Task<object>>)(
                    async (location) =>
                    { 
                        serial.ValidateLocation((string)location);
                        return serial.IsValid;
                    }
                )
            };
        }
    }

    public class Serial
    {
        public static Connection conn = new Connection("https://companyname.moraware.net/companyname/api.aspx", "username", "password");
        public bool IsValid { get; private set; }

        public Serial(bool isValid)
        {
            this.IsValid = isValid;
        }

        public void ValidateLocation(string location)
        {
         conn.AutoRefreshOnTimeout = true;
         if (!conn.Connected) { conn.Connect(); }
            this.IsValid = conn.GetInventoryLocations().Any(x => x.InventoryLocationName == location);
         if (conn.Connected) { conn.Disconnect(); }
        }
    }    */},
    references: ['JobTrackerAPI4.dll','Newtonsoft.Json.dll']

    });

var serial = createSerial("A01-01", true);
console.log(serial.validateLocation(null, true));

控制台错误输出：

C:\Users\csnow\NodeApps\MarshallDataEdge\node_modules\edge\lib\edge.js:161
return edge.initializeClrFunc(options);
            ^
Error: Unable to cast object of type 'System.Dynamic.ExpandoObject' to type 'System.String'.
    at Error (native)
    at Object.exports.func (C:\Users\csnow\NodeApps\MarshallDataEdge\node_modules\edge\lib\edge.js:161:17)
    at Object.<anonymous> (C:\Users\csnow\NodeApps\MarshallDataEdge\Evolveware_clr_instance.js:5:25)
    at Module._compile (module.js:413:34)
    at Object.Module._extensions..js (module.js:422:10)
    at Module.load (module.js:357:32)
    at Function.Module._load (module.js:314:12)
    at Function.Module.runMain (module.js:447:10)
    at startup (node.js:146:18)
    at node.js:404:3

Process finished with exit code 1

但是后来我使用 webstorm 单步执行代码并从 edge.js 中发现了这个错误。 ReferenceError: options is not defined

edgejs_clr_instance_error

Answer 1

您将 C# 文字传递给 edge.func 的方式缺少 function () {...} 包装器。应该是：

edge.func({
  source: function () {/*
    // C# code goes here
  */},
  ...
});

而不是

edge.func({
  source: {/*
    // C# code goes here
  */},
  ...
});

Edge.js 从 expandoobject 转换为字符串

Edge.js cast to string from expandoobject

javascript

c#

node.js

expandoobject

edgejs