Since i had problems with the other solutions (especially to get it working in all browsers, for example edge doesn't recognize "*" as a valid value for "Access-Control-Allow-Methods"), i had to use a custom filter component, which in the end worked for me and did exactly what i wanted to achieve. Configures authentication support using an SAML 2.0 Service Provider. Keycloak Realm Client config (as you see I even tried every combination of redirect uri..): which all then results (as soon as I try to contact the backend). It is bound by default under the DispatcherServlet.WEB_APPLICATION_CONTEXT_ATTRIBUTE key.. of requestMatchers(), mvcMatcher(String), Are Githyanki under Nondetection all the time? Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, React SpringBoot Keycloak No 'Access-Control-Allow-Origin' header is present on the requested resource, Making location easier for developers with new data primitives, Stop requiring only one assertion per unit test: Multiple assertions are fine, Mobile app infrastructure being decommissioned. This is activated by default when using. Configures OAuth 2.0 Resource Server support. JSONPiframe+domain Invoking requestMatcher(RequestMatcher) will override previous invocations , 1.1:1 2.VIPC. , HTTP The WebApplicationContext is searched for and bound in the request as an attribute that the controller and other elements in the process can use. NetscapeJavaScript , https://blog.csdn.net/weixin_40910372/article/details/100068498,