'projects/*/locations/*/agent/environments/*/users/*/sessions/*‘错误:资源名称'’与DialogFlow v2不匹配

Question

我正在尝试为DialogFlow聊天机器人实现一个自定义聊天窗口。AFAIK，我需要创建一个服务器来处理来自聊天窗口的请求，将它们转发到DialogFlow以获得响应，然后将响应返回到聊天窗口。我遵循了示例来自DialogFlow Node.js客户端SDK (步骤6：“尝试一个示例”)，最后得到如下结果：

require('dotenv').config()
const dialogflow = require('dialogflow');
const express = require('express');    

const app = express();
const PORT = process.env.PORT || 3000;    

app.use(express.json());    

const sessionClient = new dialogflow.SessionsClient({
  credentials: {
    client_email: process.env.CLIENT_EMAIL,
    private_key: process.env.PRIVATE_KEY
  }
});    

async function getResponse(req, res) {
  // A unique identifier for the given session
  console.log("body", req.body);
  const sessionId = req.body.session.split('/').pop();    

  // Create a new session
  console.log("session", sessionId)

  const sessionPath = sessionClient.sessionPath(process.env.PROJECT_ID, sessionId);    

  // The text query request.
  const request = {
    session: sessionPath,
    queryInput: {
      text: {
        // The query to send to the dialogflow agent
        text: req.body.queryResult.queryText,
        // The language used by the client (en-US)
        languageCode: 'en-US',
      }
    }
  };    

  console.log("send request", request)
  // Send request and log result
  const responses = await sessionClient.detectIntent(req);
  const result = responses[0].queryResult;
  res.json(result);
}    

app.post('/', getResponse);
app.get('/', (req, res) => res.send('Use POST'));
app.listen(PORT, () => {
  console.log('Server is running on PORT:',PORT);
});

尽管最初的示例工作正常，但使用Postman向我的服务器发送POST请求会导致以下错误：

(node:724) UnhandledPromiseRejectionWarning: Error: 3 INVALID_ARGUMENT: Resource name '' does not match 'projects/*/locations/*/agent/environments/*/users/*/sessions/*'.
    at Object.callErrorFromStatus (C:\Users\rudyt\Documents\Github\metbot-fulfillment\node_modules\@grpc\grpc-js\build\src\call.js:30:26)
    at Http2CallStream.call.on (C:\Users\rudyt\Documents\Github\metbot-fulfillment\node_modules\@grpc\grpc-js\build\src\client.js:96:33)
    at Http2CallStream.emit (events.js:194:15)
    at process.nextTick (C:\Users\rudyt\Documents\Github\metbot-fulfillment\node_modules\@grpc\grpc-js\build\src\call-stream.js:75:22)
    at process._tickCallback (internal/process/next_tick.js:61:11)
(node:724) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:724) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

我不知道这个错误是从哪里来的，我在getResponse函数中是如何格式化请求的，还是与邮递员有关？我正在进行的查询(在Postman端)是对http://localhost:3000的一个帖子，其中Content-Type头设置为application/json，请求体设置为原始JSON (我粘贴在这个样例Web钩子请求中)。我倾向于问题是请求DialogFlow，但我包括邮递员的信息，以防万一。

Answer 1

我认为问题是，您没有发送您认为您要发送到detectIntent()的东西。

假设这段代码打算在某个服务器上运行，从JavaScript客户端获取请求，然后创建对对话框流的请求--实际上并不是这样做的。

尽管您正在创建请求(在一个名为request的常量中)并记录它

  // The text query request.
  const request = {
    session: sessionPath,
    queryInput: {
      text: {
        // The query to send to the dialogflow agent
        text: req.body.queryResult.queryText,
        // The language used by the client (en-US)
        languageCode: 'en-US',
      }
    }
  };    

  console.log("send request", request)

当您将其发送到对话框流时，您不是在发送request对象，而是发送req对象，这是从客户端获得的：

const responses = await sessionClient.detectIntent(req);

如果不首先在服务器中对客户端进行消毒，您就不应该从客户端传递东西。

我怀疑如果你把它改成这样的话，它应该能用：

const responses = await sessionClient.detectIntent(request);