Azure API Management - How to send body along with my request

Question

I have an API hosted on Azure and I have started using the Azure API Management. One of my API endpoint is a GET and it requires a body in the form of JSON to be passed to the endpoint. On my postman, I am able to hit the actual API (hosted on Azure) and send the body and I am able to get some results. But when i tried to hit the api on azure api management, I am getting the following exception, although i am sending the request body:

{
    "errors": {
        "": [
            "A non-empty request body is required."
        ]
    },
    "type": "https://tools.ietf.org/html/rfcXXXX#section-6.5.1",
    "title": "One or more validation errors occurred.",
    "status": 400,
    "traceId": "XXXXXXXXXXXXXXXXXXXXXXXXXXX"
}

Am I missing some configuration on the Azure Api management? I did look up the set policies and i used the following on my inbound but this is still not working

<set-header name="Content-Type" exists-action="override">
    <value>application/json</value>
</set-header>
<set-body template="liquid">{{body.json}}"}</set-body>

Any insight on how i can fix this issue will be greatly appreciated. Thanks in advance.

Add <set-body>@{ JObject inBody = context.Request.Body.As<JObject>(); return inBody.ToString(); }</set-body> to see if you can get the body content in the trace. — Allen Wu

Allen Wu Allen Wu · Accepted Answer · 2020-05-27T01:36:32

I can use the following policy to set the GET request body.

<inbound>
    <base />
    <set-header name="Content-Type" exists-action="override">
        <value>application/json</value>
    </set-header>
    <set-body template="liquid">{"QueryString": "123", "param1": "456"}</set-body>
    <set-body>@{ 
        JObject inBody = context.Request.Body.As<JObject>(); 
        return inBody.ToString(); 
    }</set-body>
</inbound>

When I test it, I can see that it has been added into body successfully. And I can also get it by using context.Request.Body.As<JObject>().

I noticed that your body is {{body.json}}"}, which seems to be incorrect in format. You should use {{body.json}} and make sure that body.json contains the exact content.

Azure API Management - How to send body along with my request

2 Answers