Question

我正在使用DIalogflow（api.ai）来创建聊天界面。现在，我只有一个名为'Name'的简单意图，问题是'谁是名称？'响应'名称是一个伟大的人'。关于Dialoglow这个问题的json输出如下：

{
  "id": "...",
  "timestamp": "2018-03-20T12:38:27.972Z",
  "lang": "en",
  "result": {
    "source": "agent",
    "resolvedQuery": "Who is John",
    "action": "",
    "actionIncomplete": false,
    "parameters": {
      "given-name": "John"
    },
    "contexts": [],
    "metadata": {
      "intentId": "...",
      "webhookUsed": "true",
      "webhookForSlotFillingUsed": "false",
      "webhookResponseTime": 242,
      "intentName": "Name"
    },
    "fulfillment": {
      "speech": "John is a",
      "messages": [
        {
          "type": 0,
          "speech": "John is a"
        }
      ]
    },
    "score": 1
  },
  "status": {
    "code": 206,
    "errorType": "partial_content",
    "errorDetails": "Webhook call failed. Error: Failed to parse webhook JSON response: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1 path $.",
    "webhookTimedOut": false
  },
  "sessionId": "491d57cb-0af2-45ac-a658-9e47ec6658ce",
  "alternativeResultsFromKnowledgeService": {}

请注意，json输出表明有关webhook的错误："Webhook call failed. Error: Failed to parse webhook JSON response: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1 path $."

我想创建一个webhook（包含一个简单的应用程序）部署在Heroku上的php脚本，以提供另一个答案。这个php脚本的一个例子是：

$method = $_SERVER['REQUEST_METHOD'];

if($method == 'GET'){
    $requestBody = file_get_contents('php://input');
    $json = json_decode($requestBody);

    $text = $json->metadata->intentName->text;

    switch ($text) {
        case 'Name':
            $speech = "This question is too personal";
            break;

        default:
            $speech = "Sorry, I didnt get that.";
            break;
    }

    $response = new \stdClass();
    $response->speech = $speech;
    $response->displayText = $speech;
    $response->source = "webhook";
    echo json_encode($response);
}
else
{
    echo "Method not allowed";
}

另请注意，$method由于某种原因GET而不是POST，因为它应该来自Dialogflow。

另请注意，如果您尝试echo任何变量$requestBody，$json或$text，则不会打印任何内容。

这将打印到Heroku部署应用程序的网页上：

{"speech":"Sorry, I didnt get that. Please ask me something else.","displayText":"Sorry, I didnt get that. Please ask me something else.","source":"webhook"}

如何修复这些错误并使用Heroku上的php脚本连接对话框？

Webhook无法将Dialogflow与PHP脚本

0 个答案: