I am trying to integrate a web application written by someone else with an API written by someone else. At the moment I am trying to test one of the webpages using Postman. When the webpage is loaded in a browser it works correctly. I have replicated all of the headers and body in Postman, however when I try to launch the webpage in Postman a HTTP 500 status code appears (internal server error).
I think the issue is with: javax.faces.ViewState, which is a body key/value pair. I initially do I get request to the webpage in Postman and get the viewstate:
I tried passing the value: xxxxxxxxxxxxxxxxxxxxxx;yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy in the body key/value pair, but still I get an internal server error. I have also checked that the JSESSIONID cookie is identical in the GET request and the POST request.
I have also noticed that if I access the webpage from a browser, then there is a colon instead of a semi colon in the value if that has any bearing.
Most of what I have tried so far was suggested in the answer to this question: How to programmatically send POST request to JSF page without using HTML form?
What am I doing wrong?