Enable CORS check

[sitole]

Hello,
i want to connect my frontend website with Spring Kotless deployed in Lambda function, but Kotless and API gateway does not accept OPTIONS HTTP request for CORS check.

[hamadycisse]

Same issue here

[mamaorha]

hi, i had same issue i had to hack it by adding the following:

@Component
open class CorsConfiguration : OncePerRequestFilter() {
    override fun doFilterInternal(
        httpServletRequest: HttpServletRequest,
        httpServletResponse: HttpServletResponse,
        filterChain: FilterChain
    ) {
        httpServletResponse.addHeader("Access-Control-Allow-Origin", "*")
        httpServletResponse.addHeader("Access-Control-Allow-Headers", "*")
        httpServletResponse.addHeader("Access-Control-Allow-Methods", "*")

        filterChain.doFilter(httpServletRequest, httpServletResponse);
    }
}

after adding those go to api-gateway and enable cors per endpoint (its a pain)

1. go to api gateway
2. pick your api
3. pick each method and go its "method response", add an http status like 200
4. go to actions -> enable cors