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pesquisando acredito que seja por conta de estar usando ojava 8, pelo que entendi tenho que usar o wildfly. ele abre o server mas quando executo a livrari aparece oseguinte erro
22:25:13,856 SEVERE [javax.enterprise.resource.webcontainer.jsf.config] (ServerService Thread Pool -- 66) Critical error during deployment: : com.sun.faces.config.ConfigurationException: 
  Source Document: file:/C:/Users/mathe/wildfly-10.1.0.Final/standalone/deployments/livraria.war/WEB-INF/faces-config.xml
  Cause: Unable to create a new instance of 'br.com.caelum.livraria.login.Autorizador': javax.faces.FacesException: br.com.caelum.livraria.login.Autorizador from [Module "deployment.livraria.war:main" from Service Module Loader]
    at com.sun.faces.config.processor.AbstractConfigProcessor.createInstance(AbstractConfigProcessor.java:378)
    at com.sun.faces.config.processor.LifecycleConfigProcessor.addPhaseListeners(LifecycleConfigProcessor.java:154)
    at com.sun.faces.config.processor.LifecycleConfigProcessor.process(LifecycleConfigProcessor.java:132)
    at com.sun.faces.config.processor.AbstractConfigProcessor.invokeNext(AbstractConfigProcessor.java:152)
    at com.sun.faces.config.processor.FactoryConfigProcessor.process(FactoryConfigProcessor.java:239)
    at com.sun.faces.config.ConfigManager.initialize(ConfigManager.java:439)
    at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:227)
    at io.undertow.servlet.core.ApplicationListeners.contextInitialized(ApplicationListeners.java:187)
    at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:200)
    at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:171)
    at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:42)
    at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
    at io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(LegacyThreadSetupActionWrapper.java:44)
    at io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(LegacyThreadSetupActionWrapper.java:44)
    at io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(LegacyThreadSetupActionWrapper.java:44)
    at io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(LegacyThreadSetupActionWrapper.java:44)
    at io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(LegacyThreadSetupActionWrapper.java:44)
    at io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:234)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:100)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:82)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
    at org.jboss.threads.JBossThread.run(JBossThread.java:320)
Caused by: javax.faces.FacesException: br.com.caelum.livraria.login.Autorizador from [Module "deployment.livraria.war:main" from Service Module Loader]
    at com.sun.faces.config.processor.AbstractConfigProcessor.loadClass(AbstractConfigProcessor.java:428)
    at com.sun.faces.config.processor.AbstractConfigProcessor.createInstance(AbstractConfigProcessor.java:301)
    ... 25 more
Caused by: java.lang.ClassNotFoundException: br.com.caelum.livraria.login.Autorizador from [Module "deployment.livraria.war:main" from Service Module Loader]
    at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:198)
    at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:363)
    at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:351)
    at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:93)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:348)
    at com.sun.faces.util.Util.loadClass(Util.java:364)
    at com.sun.faces.config.processor.AbstractConfigProcessor.loadClass(AbstractConfigProcessor.java:420)
    ... 26 more