通过代码主动触发Health Bot场景会引发错误

问题描述

我认为这与导致错误的json网络令牌有关。我认为我可能错误地创建了json网络令牌，但不能100％确定。如果我确实创建了错误的文件，则不确定在哪里弄错。我被困在这一部分。非常感谢您的帮助。

另一方面，这是一个使用.NET Core 3.1的Microsoft MVC Web应用程序项目。这是用于连接到Microsoft Health Bot的Web聊天。客户端javascript代码基于Health Bot Container Sample代码。

目标： 通过javascript代码主动触发Microsoft Health Bot方案。

在客户端收到错误响应： 加载资源失败：服务器响应状态为502（）。

{
  "error": {
    "code": "BadArgument","message": "Missing token or secret"
  }
}

服务器端C＃代码：

using ........
using Microsoft.IdentityModel.Tokens;
using Newtonsoft.Json;
using System.IdentityModel.Tokens.Jwt;
using System.Security.Claims;

private string GenerateJsonWebToken()
{
    // Using the direct line secret key,create a new
    // symmetric security key instance.
    var tmpSecretKey = Encoding.UTF8.GetBytes("secretKey");
    SymmetricSecurityKey tmpSecurityKey = new SymmetricSecurityKey(tmpSecretKey);

    // Using the symmetric security key,create a new 
    // signing credential instance.
    SigningCredentials tmpSigningCreds = new SigningCredentials(tmpSecurityKey,SecurityAlgorithms.HmacSha512Signature);

    // New claims collection that contains some user info.
    List<Claim> tmpClaims = new List<Claim>();
    tmpClaims.Add(new Claim(JwtRegisteredClaimNames.Jti,"userId"));
    tmpClaims.Add(new Claim(JwtRegisteredClaimNames.Sub,"userName"));

    // JWT security token instance.
    JwtSecurityToken tmpSecurityToken = new JwtSecurityToken(claims: tmpClaims,signingCredentials: tmpSigningCreds);

    // JWT security token handler to create json web tokens.
    JwtSecurityTokenHandler tmpSecurityTokenHandler = new JwtSecurityTokenHandler();

    string tmpResult = tmpSecurityTokenHandler.Writetoken(tmpSecurityToken);

    return tmpResult;
}

public IActionResult Index()
{
    // Security token.
    ViewBag.JsonWebToken = GenerateJsonWebToken();

    // Scenario to launch when the web chat is launched.
    ViewBag.AutomaticWelcomeScenario = this._automaticWelcomeScenario;

    return View();
}

客户端Javascript代码：

const tmpJWT = "@ViewBag.JsonWebToken";

// Create our own store where we Could specify a scenario to use as an automatic welcome scenario
// to greet the user when the web chat is first started up.
// Sample code:
// https://github.com/microsoft/HealthBotContainerSample/blob/master/public/index.js
var tmpStore = window.WebChat.createStore({},function (store) {

    return function (next) {
        return function (action) {

            if (action.type === 'DIRECT_LINE/CONNECT_FULFILLED') {

                store.dispatch({
                    type: 'DIRECT_LINE/POST_ACTIVITY',Meta: { method: 'keyboard' },payload: {
                        activity: {
                            type: "invoke",name: "InitConversation",locale: "en-US",value: {

                                // Must use for authenticated conversation.
                                jsonWebToken: tmpJWT,// Use the following activity to proactively invoke a bot scenario.
                                triggeredScenario: {
                                    trigger: "@ViewBag.AutomaticWelcomeScenario",args: {
                                        myVariable1: "Test Value 1",myVariable2: "Test Value 2"
                                    }
                                }
                            }
                        }
                    }
                });
            }

            return next(action);
        }
    }

});

解决方法

我能够在Microsoft的帮助下使用它。因为聊天对话不是经过身份验证的对话，所以我不需要json网络令牌。在我取出json网络令牌的用法后，它开始工作了。在启动网络聊天时，我能够通过代码加载特定的场景。