WSO2 EI - how to handle malformed JSON requests in API

Question

I have created an API in WSO2 EI. API is expecting the requests to be send as JSON. If it is a malformed JSON which is sent, then I should be able to receive it and make appropriate changes to make it a proper JSON.

Any help is much appreciated.

As we are using json-eval($.) to get the message to property, it is not working for me. What else i could try instead of json-eval to get the message as string.

Answer 1

WSO2 EI has the property force.json.message.validation , which can be used to validate incoming JSON payload. Please refer doc to configure this property in 'passthru-http.properties' file.

Once the property is configured, if there is a malformed JSON payload in the request, the mediation flow will be directed to the fault/error sequence. So, you can define the mediation logic to make appropriate changes to the malformed content within the fault sequence of your API.