Amazon Lex的会话属性不允许嵌套对象吗? [英] Amazon Lex's session attributes do not allow nested object?

问题描述

我正在尝试将嵌套对象保留在sessionAttributes中.但是，似乎Amazon Lex无法识别我是否发送以下结构作为响应:

I am trying to persist a nested object in sessionAttributes. However, it seems Amazon Lex does not recognize if I send a structure like this in response:

{
    "sessionAttributes": {
        "previousIntent": "TCAIntent",
        "prevSlots": {
            "test": 1
        }
    },
    "dialogAction": {
        "type": "Delegate",
        "slots": {
            "firstName": null,
            "lastName": null,
            "rate": null,
            "rentMortgage": null,
            "downPayment": null,
            "purchasePrice": null,
            "email": null
        }
    }
}

当我用值替换{"test": 1}时，它可以正常工作.有没有办法解决这个问题或可能的错误?

When I replace {"test": 1} with a value, it works fine. Is there a way around this or possible mistake?

错误:

推荐答案

我发现Lex不允许在sessionAttributes上存储json对象或数组.解决方法是，我将json对象转换为字符串，并在需要使用时将其转换回.

I have figured out that Lex does not allow storing json object or array on sessionAttributes. As a work around, I converted the json object to string and convert it back when I need to use it.

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