2:11 p.m.
This doesn’t appear to be Keycloak related at all. This is just CORS errors on your API.
Try reading up here for some more background.
https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS
But in short, what you need to do is have your API respond with a couple of headers;
primarily the 'Access-Control-Allow-Origin' header so the browser knows that XHR
calls to the domain http://localhost:8081 are allowed be called from pages that are served
off of the domain http://localhost:9000
--
Christopher Savory
Software Engineer | EdLogics
www.edlogics.com
From: Grant Marrow <grantmarrow(a)gmail.com>
Date: Wednesday, November 16, 2016 at 2:07 PM
To: Chris Savory <chris.savory(a)edlogics.com>,
"keycloak-user(a)lists.jboss.org" <keycloak-user(a)lists.jboss.org>
Subject: Re: [keycloak-user] No 'Access-Control-Allow-Origin' header is present on
the requested resource
Ok below is a step by step of events:
1. User navigates to web application at http://localhost:9000
2. Use clicks the sign in button at http://localhost:9000/login
3. User is redirected to keycloak at http://localhost:8080 to login
4. Once signed in the user ia redirected to http://localhost:9000
5. Authenticated User navigates to registrations page at
http://localhost:9000/registrations. During this step a http GET request is done to
http://localhost:8081/leap-service/resouces/private/registrations.
At the above step the error occurs. Please let me know if you need more information.
Thanks
Regards
Grant
On 16 Nov 2016 20:26, "Grant Marrow" <grantmarrow(a)gmail.com> wrote:
Hi Chris
Thanks for getting back to me. I have done that and it didnt work. I have also tired
adding *. That did not work as well. What else can I try?
Please let me know. Thanks
Regards
Grant
On 16 Nov 2016 20:15, "Chris Savory" <chris.savory(a)edlogics.com> wrote:
In the admin, click on Clients, then select your client. Do you have any values for “Web
Origins” there? If not, you need to add ‘http://localhost:9000’
--
Christopher Savory
Software Engineer | EdLogics
www.edlogics.com <http://www.edlogics.com/>
<http://www.edlogics.com/>
<https://www.linkedin.com/company/edlogics> <https://twitter.com/EdLogics>
On 11/16/16, 1:08 PM, "keycloak-user-bounces(a)lists.jboss.org on behalf of Grant
Marrow" <keycloak-user-bounces(a)lists.jboss.org on behalf of
grantmarrow(a)gmail.com> wrote:
Hi,
I really need some help. I keep on getting the following error:
*No 'Access-Control-Allow-Origin' header is present on the requested
resource. Origin 'http://localhost:9000 <http://localhost:9000/>' is
therefore not allowed access. The response had HTTP status code 500.*
This is my setup:
*Front End:*
- angular 1.5 web application running at http://localhost:9000
- client configuration on keycloak admin console:
- keycloak.json:
{
"realm": "leap",
"auth-server-url": "http://localhost:8080/auth",
"ssl-required": "external",
"resource": "leap-web",
"public-client": true
}
*Auth Server*
- keycloak version 2.30Final running at http://localhost:8080
*Web service*
- java REST service running on Tomcat version 8.5
- client config on keycloak admin console:
- web.xml of rest service:
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="
http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="
http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID"
version="3.0">
<display-name>Archetype Created Web Application</display-name>
<module-name>leap-service</module-name>
<listener>
<listener-class>com.hm.leap.service.init.ContextListener</listener-class>
</listener>
<context-param>
<param-name>persistentUnit</param-name>
<param-value>leap</param-value>
</context-param>
<security-constraint>
<web-resource-collection>
<web-resource-name>Leap-Service</web-resource-name>
<url-pattern>/resources/private/*</url-pattern>
</web-resource-collection>
<auth-constraint>
<role-name>user</role-name>
</auth-constraint>
</security-constraint>
<login-config>
<auth-method>KEYCLOAK</auth-method>
<realm-name>leap</realm-name>
</login-config>
<security-role>
<role-name>user</role-name>
</security-role>
</web-app>
- I also have the valve setup on my context.xml that lives in the META-INF
directory
<Context path="/leap-service">
<Valve
className="org.keycloak.adapters.tomcat.KeycloakAuthenticatorValve"/>
</Context>
- keycloak.json:
{
"realm": "leap",
"bearer-only": true,
"auth-server-url": "http://localhost:8080/auth",
"ssl-required": "external",
"resource": "leap-service",
"enable-cors": true
}
The error occurs in the following scenario:
- The angular web app launches, the user clicks the login button which
redirects to Keycloak. The user signs in. The user then tries navigates to
another page. This page then executes a GET request on my REST service
which returns a list which is displayed in a table. But while executing the
GET request, I receive the error:
*No 'Access-Control-Allow-Origin' header is present on the requested
resource. Origin 'http://localhost:9000 <http://localhost:9000/>' is
therefore not allowed access. The response had HTTP status code 500.*
In my Tomcat log file. I see the following warning message:
*11-Nov-2016 11:28:19.464 WARNING [http-nio-8081-exec-2]
org.apache.catalina.authenticator.FormAuthenticator.forwardToLoginPage No
login page was defined for FORM authentication in context [/leap-service]*
I really can't seen to pinpoint the error. I find it quite strange because
I have the same setup but using an older version of keycloak (1.9*), which
worked fine. I know this might be a silly problem, but if you have some
time to help me, I would really appreciate it. Thanks.
Regards
Grant
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