Securing Applications and Services Guide

$ cd $WILDFLY_HOME
$ unzip keycloak-wildfly-adapter-dist-9.0.2.zip

$ cd $EAP_HOME
$ unzip keycloak-eap7-adapter-dist-9.0.2.zip

$ cd $EAP_HOME
$ unzip keycloak-eap6-adapter-dist-9.0.2.zip

$ cd $JBOSS_HOME
$ unzip keycloak-as7-adapter-dist-9.0.2.zip

$ ./bin/jboss-cli.sh --file=bin/adapter-elytron-install-offline.cli

$ ./bin/jboss-cli.sh --file=bin/adapter-install-offline.cli

$ ./bin/jboss-cli.sh -c --file=bin/adapter-elytron-install.cli

$ ./bin/jboss-cli.sh -c --file=bin/adapter-install.cli

<web-app xmlns="http://java.sun.com/xml/ns/javaee"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
      version="3.0">

    <module-name>application</module-name>

    <security-constraint>
        <web-resource-collection>
            <web-resource-name>Admins</web-resource-name>
            <url-pattern>/admin/*</url-pattern>
        </web-resource-collection>
        <auth-constraint>
            <role-name>admin</role-name>
        </auth-constraint>
        <user-data-constraint>
            <transport-guarantee>CONFIDENTIAL</transport-guarantee>
        </user-data-constraint>
    </security-constraint>
    <security-constraint>
        <web-resource-collection>
            <web-resource-name>Customers</web-resource-name>
            <url-pattern>/customers/*</url-pattern>
        </web-resource-collection>
        <auth-constraint>
            <role-name>user</role-name>
        </auth-constraint>
        <user-data-constraint>
            <transport-guarantee>CONFIDENTIAL</transport-guarantee>
        </user-data-constraint>
    </security-constraint>

    <login-config>
        <auth-method>KEYCLOAK</auth-method>
        <realm-name>this is ignored currently</realm-name>
    </login-config>

    <security-role>
        <role-name>admin</role-name>
    </security-role>
    <security-role>
        <role-name>user</role-name>
    </security-role>
</web-app>

<extensions>
  <extension module="org.keycloak.keycloak-adapter-subsystem"/>
</extensions>

<profile>
  <subsystem xmlns="urn:jboss:domain:keycloak:1.1">
     <secure-deployment name="WAR MODULE NAME.war">
        <realm>demo</realm>
        <auth-server-url>http://localhost:8081/auth</auth-server-url>
        <ssl-required>external</ssl-required>
        <resource>customer-portal</resource>
        <credential name="secret">password</credential>
     </secure-deployment>
  </subsystem>
</profile>

<subsystem xmlns="urn:jboss:domain:keycloak:1.1">
    <realm name="demo">
        <auth-server-url>http://localhost:8080/auth</auth-server-url>
        <ssl-required>external</ssl-required>
    </realm>
    <secure-deployment name="customer-portal.war">
        <realm>demo</realm>
        <resource>customer-portal</resource>
        <credential name="secret">password</credential>
    </secure-deployment>
    <secure-deployment name="product-portal.war">
        <realm>demo</realm>
        <resource>product-portal</resource>
        <credential name="secret">password</credential>
    </secure-deployment>
    <secure-deployment name="database.war">
        <realm>demo</realm>
        <resource>database-service</resource>
        <bearer-only>true</bearer-only>
    </secure-deployment>
</subsystem>

<?xml version="1.0" encoding="UTF-8"?>

<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns:camel="http://camel.apache.org/schema/blueprint"
           xsi:schemaLocation="
       http://www.osgi.org/xmlns/blueprint/v1.0.0 http://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd
       http://camel.apache.org/schema/blueprint http://camel.apache.org/schema/blueprint/camel-blueprint.xsd">

    <bean id="kcAdapterConfig" class="org.keycloak.representations.adapters.config.AdapterConfig">
        <property name="realm" value="demo"/>
        <property name="resource" value="admin-camel-endpoint"/>
        <property name="bearerOnly" value="true"/>
        <property name="authServerUrl" value="http://localhost:8080/auth" />
        <property name="sslRequired" value="EXTERNAL"/>
    </bean>

    <bean id="keycloakAuthenticator" class="org.keycloak.adapters.jetty.KeycloakJettyAuthenticator">
        <property name="adapterConfig" ref="kcAdapterConfig"/>
    </bean>

    <bean id="constraint" class="org.eclipse.jetty.util.security.Constraint">
        <property name="name" value="Customers"/>
        <property name="roles">
            <list>
                <value>admin</value>
            </list>
        </property>
        <property name="authenticate" value="true"/>
        <property name="dataConstraint" value="0"/>
    </bean>

    <bean id="constraintMapping" class="org.eclipse.jetty.security.ConstraintMapping">
        <property name="constraint" ref="constraint"/>
        <property name="pathSpec" value="/*"/>
    </bean>

    <bean id="securityHandler" class="org.eclipse.jetty.security.ConstraintSecurityHandler">
        <property name="authenticator" ref="keycloakAuthenticator" />
        <property name="constraintMappings">
            <list>
                <ref component-id="constraintMapping" />
            </list>
        </property>
        <property name="authMethod" value="BASIC"/>
        <property name="realmName" value="does-not-matter"/>
    </bean>

    <bean id="sessionHandler" class="org.keycloak.adapters.jetty.spi.WrappingSessionHandler">
        <property name="handler" ref="securityHandler" />
    </bean>

    <bean id="helloProcessor" class="org.keycloak.example.CamelHelloProcessor" />

    <camelContext id="blueprintContext"
                  trace="false"
                  xmlns="http://camel.apache.org/schema/blueprint">
        <route id="httpBridge">
            <from uri="jetty:http://0.0.0.0:8383/admin-camel-endpoint?handlers=sessionHandler&amp;matchOnUriPrefix=true" />
            <process ref="helloProcessor" />
            <log message="The message from camel endpoint contains ${body}"/>
        </route>
    </camelContext>

</blueprint>

javax.servlet;version="[3,4)",
javax.servlet.http;version="[3,4)",
org.apache.camel.*,
org.apache.camel;version="[2.13,3)",
org.eclipse.jetty.security;version="[9,10)",
org.eclipse.jetty.server.nio;version="[9,10)",
org.eclipse.jetty.util.security;version="[9,10)",
org.keycloak.*;version="9.0.2",
org.osgi.service.blueprint,
org.osgi.service.blueprint.container,
org.osgi.service.event,

<bean id="securityHandlerRest" class="org.eclipse.jetty.security.ConstraintSecurityHandler">
    <property name="authenticator" ref="keycloakAuthenticator" />
    <property name="constraintMappings">
        <list>
            <ref component-id="constraintMapping" />
        </list>
    </property>
    <property name="authMethod" value="BASIC"/>
    <property name="realmName" value="does-not-matter"/>
</bean>

<bean id="sessionHandlerRest" class="org.keycloak.adapters.jetty.spi.WrappingSessionHandler">
    <property name="handler" ref="securityHandlerRest" />
</bean>


<camelContext id="blueprintContext"
              trace="false"
              xmlns="http://camel.apache.org/schema/blueprint">

    <restConfiguration component="jetty" contextPath="/restdsl"
                       port="8484">
        <!--the link with Keycloak security handlers happens here-->
        <endpointProperty key="handlers" value="sessionHandlerRest"></endpointProperty>
        <endpointProperty key="matchOnUriPrefix" value="true"></endpointProperty>
    </restConfiguration>

    <rest path="/hello" >
        <description>Hello rest service</description>
        <get uri="/{id}" outType="java.lang.String">
            <description>Just an helllo</description>
            <to uri="direct:justDirect" />
        </get>

    </rest>

    <route id="justDirect">
        <from uri="direct:justDirect"/>
        <process ref="helloProcessor" />
        <log message="RestDSL correctly invoked ${body}"/>
        <setBody>
            <constant>(__This second sentence is returned from a Camel RestDSL endpoint__)</constant>
        </setBody>
    </route>

</camelContext>

META-INF.cxf;version="[2.7,3.2)",
META-INF.cxf.osgi;version="[2.7,3.2)";resolution:=optional,
org.apache.cxf.bus;version="[2.7,3.2)",
org.apache.cxf.bus.spring;version="[2.7,3.2)",
org.apache.cxf.bus.resource;version="[2.7,3.2)",
org.apache.cxf.transport.http;version="[2.7,3.2)",
org.apache.cxf.*;version="[2.7,3.2)",
org.springframework.beans.factory.config,
org.eclipse.jetty.security;version="[9,10)",
org.eclipse.jetty.util.security;version="[9,10)",
org.keycloak.*;version="9.0.2"

<?xml version="1.0" encoding="UTF-8"?>
<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns:jaxrs="http://cxf.apache.org/blueprint/jaxrs"
           xsi:schemaLocation="
                http://www.osgi.org/xmlns/blueprint/v1.0.0 http://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd
                http://cxf.apache.org/blueprint/jaxrs http://cxf.apache.org/schemas/blueprint/jaxrs.xsd">

    <!-- JAXRS Application -->

    <bean id="customerBean" class="org.keycloak.example.rs.CxfCustomerService" />

    <jaxrs:server id="cxfJaxrsServer" address="/customerservice">
        <jaxrs:providers>
            <bean class="com.fasterxml.jackson.jaxrs.json.JacksonJsonProvider" />
        </jaxrs:providers>
        <jaxrs:serviceBeans>
            <ref component-id="customerBean" />
        </jaxrs:serviceBeans>
    </jaxrs:server>


    <!-- Securing of whole /cxf context by unregister default cxf servlet from paxweb and re-register with applied security constraints -->

    <bean id="cxfConstraintMapping" class="org.eclipse.jetty.security.ConstraintMapping">
        <property name="constraint">
            <bean class="org.eclipse.jetty.util.security.Constraint">
                <property name="name" value="cst1"/>
                <property name="roles">
                    <list>
                        <value>user</value>
                    </list>
                </property>
                <property name="authenticate" value="true"/>
                <property name="dataConstraint" value="0"/>
            </bean>
        </property>
        <property name="pathSpec" value="/cxf/*"/>
    </bean>

    <bean id="cxfKeycloakPaxWebIntegration" class="org.keycloak.adapters.osgi.PaxWebIntegrationService"
          init-method="start" destroy-method="stop">
        <property name="bundleContext" ref="blueprintBundleContext" />
        <property name="jettyWebXmlLocation" value="/WEB-INF/jetty-web.xml" />
        <property name="constraintMappings">
            <list>
                <ref component-id="cxfConstraintMapping" />
            </list>
        </property>
    </bean>

    <bean id="defaultCxfReregistration" class="org.keycloak.adapters.osgi.ServletReregistrationService" depends-on="cxfKeycloakPaxWebIntegration"
          init-method="start" destroy-method="stop">
        <property name="bundleContext" ref="blueprintBundleContext" />
        <property name="managedServiceReference">
            <reference interface="org.osgi.service.cm.ManagedService" filter="(service.pid=org.apache.cxf.osgi)" timeout="5000"  />
        </property>
    </bean>

</blueprint>

META-INF.cxf;version="[2.7,3.2)",
META-INF.cxf.osgi;version="[2.7,3.2)";resolution:=optional,
org.apache.cxf.transport.http;version="[2.7,3.2)",
org.apache.cxf.*;version="[2.7,3.2)",
com.fasterxml.jackson.jaxrs.json;version="[2.5,3)",
org.eclipse.jetty.security;version="[9,10)",
org.eclipse.jetty.util.security;version="[9,10)",
org.keycloak.*;version="9.0.2",
org.keycloak.adapters.jetty;version="9.0.2",
*;resolution:=optional

<?xml version="1.0" encoding="UTF-8"?>
<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns:camel="http://camel.apache.org/schema/blueprint"
           xsi:schemaLocation="
       http://www.osgi.org/xmlns/blueprint/v1.0.0 http://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd
       http://camel.apache.org/schema/blueprint http://camel.apache.org/schema/blueprint/camel-blueprint-2.17.1.xsd">

    <bean id="keycloakConfigResolver" class="org.keycloak.adapters.osgi.BundleBasedKeycloakConfigResolver" >
        <property name="bundleContext" ref="blueprintBundleContext" />
    </bean>

    <bean id="helloProcessor" class="org.keycloak.example.CamelHelloProcessor" />

    <camelContext id="blueprintContext"
                  trace="false"
                  xmlns="http://camel.apache.org/schema/blueprint">

        <route id="httpBridge">
            <from uri="undertow-keycloak:http://0.0.0.0:8383/admin-camel-endpoint?matchOnUriPrefix=true&amp;configResolver=#keycloakConfigResolver&amp;allowedRoles=admin" />
            <process ref="helloProcessor" />
            <log message="The message from camel endpoint contains ${body}"/>
        </route>

    </camelContext>

</blueprint>

javax.servlet;version="[3,4)",
javax.servlet.http;version="[3,4)",
javax.net.ssl,
org.apache.camel.*,
org.apache.camel;version="[2.13,3)",
io.undertow.*,
org.keycloak.*;version="9.0.2",
org.osgi.service.blueprint,
org.osgi.service.blueprint.container

<camelContext id="blueprintContext"
              trace="false"
              xmlns="http://camel.apache.org/schema/blueprint">

    <!--the link with Keycloak security handlers happens by using undertow-keycloak component -->
    <restConfiguration apiComponent="undertow-keycloak" contextPath="/restdsl" port="8484">
        <endpointProperty key="configResolver" value="#keycloakConfigResolver" />
        <endpointProperty key="allowedRoles" value="admin,superadmin" />
    </restConfiguration>

    <rest path="/hello" >
        <description>Hello rest service</description>
        <get uri="/{id}" outType="java.lang.String">
            <description>Just a hello</description>
            <to uri="direct:justDirect" />
        </get>

    </rest>

    <route id="justDirect">
        <from uri="direct:justDirect"/>
        <process ref="helloProcessor" />
        <log message="RestDSL correctly invoked ${body}"/>
        <setBody>
            <constant>(__This second sentence is returned from a Camel RestDSL endpoint__)</constant>
        </setBody>
    </route>

</camelContext>

META-INF.cxf;version="[2.7,3.3)",
META-INF.cxf.osgi;version="[2.7,3.3)";resolution:=optional,
org.apache.cxf.bus;version="[2.7,3.3)",
org.apache.cxf.bus.spring;version="[2.7,3.3)",
org.apache.cxf.bus.resource;version="[2.7,3.3)",
org.apache.cxf.transport.http;version="[2.7,3.3)",
org.apache.cxf.*;version="[2.7,3.3)",
org.springframework.beans.factory.config,
org.keycloak.*;version="9.0.2"

<?xml version="1.0" encoding="UTF-8"?>
<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xmlns:jaxrs="http://cxf.apache.org/blueprint/jaxrs"
           xsi:schemaLocation="
                http://www.osgi.org/xmlns/blueprint/v1.0.0 http://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd
                http://cxf.apache.org/blueprint/jaxrs http://cxf.apache.org/schemas/blueprint/jaxrs.xsd">

    <!-- JAXRS Application -->
    <bean id="customerBean" class="org.keycloak.example.rs.CxfCustomerService" />

    <jaxrs:server id="cxfJaxrsServer" address="/customerservice">
        <jaxrs:providers>
            <bean class="com.fasterxml.jackson.jaxrs.json.JacksonJsonProvider" />
        </jaxrs:providers>
        <jaxrs:serviceBeans>
            <ref component-id="customerBean" />
        </jaxrs:serviceBeans>
    </jaxrs:server>
</blueprint>

bundle.symbolicName = org.apache.cxf.cxf-rt-transports-http
context.id = default

context.param.keycloak.config.resolver = org.keycloak.adapters.osgi.HierarchicalPathBasedKeycloakConfigResolver

login.config.authMethod = KEYCLOAK

security.cxf.url = /cxf/customerservice/*
security.cxf.roles = admin, user

javax.ws.rs;version="[2,3)",
META-INF.cxf;version="[2.7,3.3)",
META-INF.cxf.osgi;version="[2.7,3.3)";resolution:=optional,
org.apache.cxf.transport.http;version="[2.7,3.3)",
org.apache.cxf.*;version="[2.7,3.3)",
com.fasterxml.jackson.jaxrs.json;version="${jackson.version}"

<dependency>
    <groupId>org.keycloak</groupId>
    <artifactId>keycloak-spring-boot-starter</artifactId>
</dependency>

<dependencyManagement>
  <dependencies>
    <dependency>
      <groupId>org.keycloak.bom</groupId>
      <artifactId>keycloak-adapter-bom</artifactId>
      <version>9.0.2</version>
      <type>pom</type>
      <scope>import</scope>
    </dependency>
  </dependencies>
</dependencyManagement>

keycloak.realm = demorealm
keycloak.auth-server-url = http://127.0.0.1:8080/auth
keycloak.ssl-required = external
keycloak.resource = demoapp
keycloak.credentials.secret = 11111111-1111-1111-1111-111111111111
keycloak.use-resource-role-mappings = true

keycloak.securityConstraints[0].authRoles[0] = admin
keycloak.securityConstraints[0].authRoles[1] = user
keycloak.securityConstraints[0].securityCollections[0].name = insecure stuff
keycloak.securityConstraints[0].securityCollections[0].patterns[0] = /insecure

keycloak.securityConstraints[1].authRoles[0] = admin
keycloak.securityConstraints[1].securityCollections[0].name = admin stuff
keycloak.securityConstraints[1].securityCollections[0].patterns[0] = /admin

$ cd $TOMCAT_HOME/lib
$ unzip keycloak-tomcat7-adapter-dist.zip

$ cd $TOMCAT_HOME/lib
$ unzip keycloak-tomcat-adapter-dist.zip

<Context path="/your-context-path">
    <Valve className="org.keycloak.adapters.tomcat.KeycloakAuthenticatorValve"/>
</Context>

<web-app xmlns="http://java.sun.com/xml/ns/javaee"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
      version="3.0">

        <module-name>customer-portal</module-name>

    <security-constraint>
        <web-resource-collection>
            <web-resource-name>Customers</web-resource-name>
            <url-pattern>/*</url-pattern>
        </web-resource-collection>
        <auth-constraint>
            <role-name>user</role-name>
        </auth-constraint>
    </security-constraint>

    <login-config>
        <auth-method>BASIC</auth-method>
        <realm-name>this is ignored currently</realm-name>
    </login-config>

    <security-role>
        <role-name>admin</role-name>
    </security-role>
    <security-role>
        <role-name>user</role-name>
    </security-role>
</web-app>

$ cd your-base
$ unzip keycloak-jetty93-adapter-dist-2.5.0.Final.zip

$ java -jar $JETTY_HOME/start.jar --add-to-startd=keycloak

<?xml version="1.0"?>
<!DOCTYPE Configure PUBLIC "-//Mort Bay Consulting//DTD Configure//EN" "http://www.eclipse.org/jetty/configure_9_0.dtd">
<Configure class="org.eclipse.jetty.webapp.WebAppContext">
    <Get name="securityHandler">
        <Set name="authenticator">
            <New class="org.keycloak.adapters.jetty.KeycloakJettyAuthenticator">
            </New>
        </Set>
    </Get>
</Configure>

<?xml version="1.0"?>
<!DOCTYPE Configure PUBLIC "-//Mort Bay Consulting//DTD Configure//EN" "http://www.eclipse.org/jetty/configure_9_0.dtd">
<Configure class="org.eclipse.jetty.webapp.WebAppContext">
  <Get name="securityHandler">
    <Set name="authenticator">
        <New class="org.keycloak.adapters.jetty.KeycloakJettyAuthenticator">
            <Set name="adapterConfig">
                <New class="org.keycloak.representations.adapters.config.AdapterConfig">
                    <Set name="realm">tomcat</Set>
                    <Set name="resource">customer-portal</Set>
                    <Set name="authServerUrl">http://localhost:8081/auth</Set>
                    <Set name="sslRequired">external</Set>
                    <Set name="credentials">
                        <Map>
                            <Entry>
                                <Item>secret</Item>
                                <Item>password</Item>
                            </Entry>
                        </Map>
                    </Set>
                </New>
            </Set>
        </New>
    </Set>
  </Get>
</Configure>

<web-app xmlns="http://java.sun.com/xml/ns/javaee"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
      version="3.0">

        <module-name>customer-portal</module-name>

    <security-constraint>
        <web-resource-collection>
            <web-resource-name>Customers</web-resource-name>
            <url-pattern>/*</url-pattern>
        </web-resource-collection>
        <auth-constraint>
            <role-name>user</role-name>
        </auth-constraint>
        <user-data-constraint>
            <transport-guarantee>CONFIDENTIAL</transport-guarantee>
        </user-data-constraint>
    </security-constraint>

    <login-config>
        <auth-method>BASIC</auth-method>
        <realm-name>this is ignored currently</realm-name>
    </login-config>

    <security-role>
        <role-name>admin</role-name>
    </security-role>
    <security-role>
        <role-name>user</role-name>
    </security-role>
</web-app>

<dependency>
    <groupId>org.keycloak</groupId>
    <artifactId>keycloak-spring-security-adapter</artifactId>
    <version>9.0.2</version>
</dependency>

@Configuration
@EnableWebSecurity
@ComponentScan(basePackageClasses = KeycloakSecurityComponents.class)
public class SecurityConfig extends KeycloakWebSecurityConfigurerAdapter {

    ...

    @Autowired
    public KeycloakClientRequestFactory keycloakClientRequestFactory;

    @Bean
    @Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE)
    public KeycloakRestTemplate keycloakRestTemplate() {
        return new KeycloakRestTemplate(keycloakClientRequestFactory);
    }

    ...
}

<bean id="keycloakRestTemplate" class="org.keycloak.adapters.springsecurity.client.KeycloakRestTemplate" scope="prototype">
    <constructor-arg name="factory" ref="keycloakClientRequestFactory" />
</bean>

@Service
public class RemoteProductService implements ProductService {

    @Autowired
    private KeycloakRestTemplate template;

    private String endpoint;

    @Override
    public List<String> getProducts() {
        ResponseEntity<String[]> response = template.getForEntity(endpoint, String[].class);
        return Arrays.asList(response.getBody());
    }
}

<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-security</artifactId>
</dependency>

<dependency>
        <groupId>org.keycloak</groupId>
        <artifactId>keycloak-installed-adapter</artifactId>
        <version>9.0.2</version>
</dependency>

{
  "realm": "desktop-app-auth",
  "auth-server-url": "http://localhost:8081/auth",
  "ssl-required": "external",
  "resource": "desktop-app",
  "public-client": true,
  "use-resource-role-mappings": true,
  "enable-pkce": true
}

// reads the configuration from classpath: META-INF/keycloak.json
KeycloakInstalled keycloak = new KeycloakInstalled();

// opens desktop browser
keycloak.loginDesktop();

AccessToken token = keycloak.getToken();
// use token to send backend request

// ensure token is valid for at least 30 seconds
long minValidity = 30L;
String tokenString = keycloak.getTokenString(minValidity, TimeUnit.SECONDS);


 // when you want to logout the user.
keycloak.logout();

import java.util.Locale;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;

import org.keycloak.adapters.installed.KeycloakInstalled;
import org.keycloak.representations.AccessToken;

public class DesktopApp {

        public static void main(String[] args) throws Exception {

                KeycloakInstalled keycloak = new KeycloakInstalled();
                keycloak.setLocale(Locale.ENGLISH);
                keycloak.loginDesktop();

                AccessToken token = keycloak.getToken();
                Executors.newSingleThreadExecutor().submit(() -> {

                        System.out.println("Logged in...");
                        System.out.println("Token: " + token.getSubject());
                        System.out.println("Username: " + token.getPreferredUsername());
                        try {
                                System.out.println("AccessToken: " + keycloak.getTokenString());
                        } catch (Exception ex) {
                                ex.printStackTrace();
                        }

                        int timeoutSeconds = 20;
                        System.out.printf("Logging out in...%d Seconds%n", timeoutSeconds);
                        try {
                                TimeUnit.SECONDS.sleep(timeoutSeconds);
                        } catch (Exception e) {
                                e.printStackTrace();
                        }

                        try {
                                keycloak.logout();
                        } catch (Exception e) {
                                e.printStackTrace();
                        }

                        System.out.println("Exiting...");
                        System.exit(0);
                });
        }
}

"credentials": {
    "secret": "19666a4f-32dd-4049-b082-684c74115f28"
}

"credentials": {
  "jwt": {
    "client-keystore-file": "classpath:keystore-client.jks",
    "client-keystore-type": "JKS",
    "client-keystore-password": "storepass",
    "client-key-password": "keypass",
    "client-key-alias": "clientkey",
    "token-expiration": 10
  }
}

"credentials": {
  "secret-jwt": {
    "secret": "19666a4f-32dd-4049-b082-684c74115f28",
    "algorithm": "HS512"
  }
}

"token-store": "cookie"

"register-node-at-startup": true,
"register-node-period": 600,

"always-refresh-token": true

new Keycloak();
new Keycloak('http://localhost/keycloak.json');
new Keycloak({ url: 'http://localhost/auth', realm: 'myrealm', clientId: 'myApp' });