SerializationException:在不期望的位置找到结构或映射的开始:API网关到Step函数 [英] SerializationException:Start of structure or map found where not expected: API Gateway to Step function

问题描述

我正在使用有关从此处将api网关与步骤功能集成的标准博客教程: https://docs.aws.amazon. com/step-functions/latest/dg/tutorial-api-gateway.html

I am using the standard blog tutorial on integrating api gateway with step functions from here: https://docs.aws.amazon.com/step-functions/latest/dg/tutorial-api-gateway.html

我的step函数期望以下输出:

My step function expects the following output:

{
  "my_params": {
     "config": "config_value"
  }
}

博客中提到的执行发布请求所需的请求正文为:

the Request body needed to do a post request as mentioned in the blog is:

{
 "input": "{}",
   "name": "MyExecution",
   "stateMachineArn": "arn:aws:states:us-east-1:123456789012:stateMachine:HelloWorld"
}

我正在传递所需的输入，例如:

I am passing my required input like this:

{
 "input": {
           "my_params": {
             "config": "config_value"
             }
          },
  "name": "MyExecution",
  "stateMachineArn": "my-arn"
}

但是，我不断出现以下错误:

However, I am continuously getting following error:

{
"__type": "com.amazon.coral.service#SerializationException",
  "Message": "Start of structure or map found where not expected."
}

有人可以告诉我这里到底是什么问题吗?我在这里做错了什么?快速帮助表示赞赏.

Can someone tell me what exactly is the problem here? What am I doing wrong here? Quick help appreciated.

推荐答案

按如下所示使用转义符作为参数

Use escape character for your parameters as follows

{
 "input": "{
           \"my_params\": {
             \"config\": \"config_value\"
             }
          }",
  "name": "MyExecution",
  "stateMachineArn": "my-arn"
}

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