I’m trying to integrate with CJ’s web services but running into constant issues. Every time I make a request, I get back java.lang.NullPointerException errors, which is weird since I’m building a .NET application. This seems to be happening on their end.
had the same issues with cj’s api last month. their auth tokens expire way faster than they claim, which triggers those random java errors. regenerate your dev key and don’t cache credentials too long. also, skip their sandbox - it’s broken. just test directly in production with small requests.
I worked with CJ’s web services last year - those Java exceptions are super common. Their XML parsing is ridiculously picky about request formatting. Make sure your SOAP envelope matches their examples exactly. Even tiny differences in namespace declarations will trigger NullPointerExceptions. Their staging environment acts differently than production, so testing there won’t give you reliable results. Try explicitly setting the Content-Type header to “text/xml; charset=utf-8” instead of letting the framework do it. Their support is slow but they’ll send working code samples if you open a ticket with your integration details.
That java.lang.NullPointerException in a .NET app is definitely CJ’s server acting up. I hit the same thing about six months back with an affiliate tracker. Turns out CJ has some undocumented required fields they don’t mention in their API docs. I fixed it by adding null checks to my request payload and making sure optional parameters were either filled out or left out completely - no empty strings. Also check if you’re hitting their rate limits. Their error handling sucks for that and throws these weird Java exceptions. Try slowing down your requests and see if it stops.