reactjsHow can I implement Keycloak authentication with React.js?
-
Install the Keycloak JavaScript adapter by running
npm install keycloak-js
in the terminal. -
Create a Keycloak instance in your React component's
constructor
method, passing it theinitOptions
object.
import Keycloak from 'keycloak-js';
class App extends React.Component {
constructor(props) {
super(props);
this.state = { keycloak: null };
const initOptions = {
url: 'http://localhost:8080/auth',
realm: 'master',
clientId: 'my-react-app'
};
const keycloak = Keycloak(initOptions);
this.state = { keycloak };
}
...
}
- Initialize the Keycloak instance by calling
keycloak.init()
and passing it asuccess
anderror
callback.
keycloak.init({ onLoad: 'login-required' }).success(authenticated => {
this.setState({ authenticated });
}).error(err => {
console.error(err);
});
- Wrap the component's
render
method with a call tokeycloak.updateToken
, which will ensure that the token is up to date.
render() {
if (this.state.keycloak) {
if (this.state.authenticated) {
this.state.keycloak.updateToken(5).success(refreshed => {
if (refreshed) {
console.log('Token refreshed');
} else {
console.log('Token not refreshed');
}
}).error(err => console.error(err));
...
}
}
}
- Use the
keycloak.token
property to obtain the token and pass it with the request headers when making API calls.
axios.get('/api/data', {
headers: {
Authorization: 'Bearer ' + this.state.keycloak.token
}
})
- Log out the user by calling
keycloak.logout()
.
keycloak.logout()
- Finally, use the
keycloak.login()
method to redirect the user to the Keycloak login page.
keycloak.login()
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