amazon lex 响应中的反序列化错误

Question

我已将 Amazon Lex 与 Amazon Lambda 连接，我测试了 Amazon Lambda，它按预期工作。

我从 Amazon Lambda 得到以下响应（使用云观察测试）：

 {'sessionAttributes': {}, 'dialogAction': {'type': 'ElicitSlot', 'intentName': 'paymentdue', 'slots': {}, 'slotToElicit': '', 'message': 'This is a test message', 'responseCard': '', 'fulfillmentState': 'Fulfilled'}}

但我从 amazon lex 收到以下错误：这里可能是什么问题？

An error has occurred: Invalid Lambda Response: Received invalid response from Lambda: 
Can not construct instance of Message: no String-argument constructor/factory method to deserialize from String value 
('This is a test message') at [Source: {"sessionAttributes": {}, "dialogAction": {"type": "ElicitSlot", "intentName": "paymentdue", "slots": {}, "slotToElicit": "", "message": "This is a test message", "responseCard": "", "fulfillmentState": "Fulfilled"}}; line: 1, column: 138]

有人可以告诉我这个问题吗？

谢谢，
哈利

Answer 1

当响应类型为 ElicitSlot 时，Lex 希望看到这样的 message 字段：

"message": {
      "contentType": "PlainText or SSML or CustomPayload",
      "content": "Message to convey to the user. For example, What size pizza would you like?"
    }

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amazon lex 响应中的反序列化错误

Deserialization error in amazon lex response

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