AWS API Gateway映射模板JSON [英] AWS API Gateway Mapping Template JSON

问题描述

我有一个使用"Lambda代理集成" 不的API阶段，该阶段具有传递错误的Lambda函数.

I've got a API stage that's NOT using "Lambda Proxy integration" which has a Lambda function passing an error.

在映射模板中，我有这个:

In the mapping template I have this:

$input.path("$.errorMessage")

这将导致以下结果的输出:

Which results in the output of this:

{
    "headers": {
        "apiVersion": "20190218.1",
        "isTesting": true
    },
    "body": {
        "statusCode": 503,
        "status": "Service Unavailable",
        "title": "One or more of our data providers are currently offline for scheduled maintenance"
     }
}

标头值已映射到模板标头并正确通过，但是我需要将主体转换为此标头:

The header values are mapped to template headers and pull through correctly, however I need the body to transform to this:

{
   "statusCode": 503,
   "status": "Service Unavailable",
   "title": "One or more of our data providers are currently offline for scheduled maintenance"
}

无论我尝试了什么，body总是以空字符串，空正文或无效JSON的形式返回.

Whatever I have tried, body always returns as a blank string, an empty body, or an invalid JSON.

这是我所拥有的最接近的，但是它返回无效的JSON:
$ util.parseJson($ input.path("$.errorMessage")).body

This is the closest I've got but it returns an invalid JSON:
$util.parseJson($input.path("$.errorMessage")).body

结果(不带引号返回):

Result (comes back with no quotes):

{statusCode=503, status=Service Unavailable, title=One or more of our data providers are currently offline for scheduled maintenance}

有可能做我想做的事吗?我找不到$ util.parseJson(即stringify)的反向字符.

Is it possible to do what I'm after? I can't find a reverse for $util.parseJson (i.e, stringify).

谢谢！

推荐答案

我认为原始海报可能在过去11个月中一直在发展，但是如果其他任何人偶然发现此问题，请 $ input.json('$ .errorMessage.body')应该可以.

I think the original poster has probably moved on in the past 11 months, but in case anyone else stumbles across this question, $input.json('$.errorMessage.body') should work.

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