azure - 液态体内返回应对政策

Question

这个问题已经有答案了:

Azure API Management - Liquid Transformation does no longer work (2 个回答)

已关闭 9 个月前。

有谁知道如何在使用 策略时从 语句内部访问请求正文？当我这样做时， body 似乎是空的:

<inbound>
    <base />
    <set-header name="Content-Type" exists-action="override">
        <value>application/json</value>
    </set-header>
    <return-response>
        <set-status code="200" reason="OK" />
        <set-header name="Content-Type" exists-action="override">
            <value>application/json</value>
        </set-header>
        <set-body template="liquid">
            {
            "name":"{{body.firstname}}"
            }
            
        </set-body>
    </return-response>
</inbound>

请求正文是:

{"firstname" : "John Doe"}`

预期结果是:

{"name":"John Doe"}

结果是:

{"name":""}

Answer 1

Microsoft 支持人员告诉我该策略 return-response does not support set-body 与液体模板。

您可以通过在 return-response 中使用正文之前修改正文来解决此问题。

入境政策:

<inbound>
    <base />
    <set-header name="Content-Type" exists-action="override">
        <value>application/json</value>
    </set-header>
    <set-body template="liquid">
{
   "name":"{{body.firstname}}"
}
    </set-body>
    <return-response>
        <set-status code="200" reason="OK" />
        <set-header name="Content-Type" exists-action="override">
            <value>application/json</value>
        </set-header>
        <set-body>@{   
            string body = context.Request.Body.As<string>(true);
            return body;
        }</set-body>
    </return-response>
</inbound>

请求:

POST https://rfqapiservicey27itmeb4cf7q.azure-api.net/sample/liquid HTTP/1.1
Host: rfqapiservicey27itmeb4cf7q.azure-api.net
Content-Type: application/json

{"firstname" : "John Doe"}

回应:

HTTP/1.1 200 OK
content-length: 35
content-type: application/json
date: Mon, 09 Jan 2023 04:21:51 GMT
request-context: appId=cid-v1:a10dc7c9-c354-40a2-acf3-1401681f7808
vary: Origin

{
    "name": "John Doe"
}