我真的需要你的帮助：
我想实现以下示例：
https://examples.javacodegeeks.com/enterprise-java/jetty/jetty-authentication-configuration-example/
我从教程结束时下载了完整的源代码 - 所以一切都应该是正确的。我正在使用Eclipse IDE for Java Developers Version：Neon.1a Release（4.6.1），Jetty（来自Marketplace）和最新版本的JDK。当我按下播放时，会出现以下错误：
配置：
.gitignore如果我打开http://localhost:8080/，页面如下：
C:\Users\DiebolPa\AppData\Local\Temp\eclipseJettyPlugin.config.jetty_authentication_example.xml
Version: 8.1.14.v20131031
Context: /
Port: 8080
Classpath: C:/Users/DiebolPa/.m2/repository/javax/servlet/javax.servlet-api/3.1.0/javax.servlet-api-3.1.0.jar
C:/Users/DiebolPa/.m2/repository/org/eclipse/jetty/jetty-http/9.2.11.v20150529/jetty-http-9.2.11.v20150529.jar
C:/Users/DiebolPa/.m2/repository/org/eclipse/jetty/jetty-io/9.2.11.v20150529/jetty-io-9.2.11.v20150529.jar
C:/Users/DiebolPa/.m2/repository/org/eclipse/jetty/jetty-security/9.2.11.v20150529/jetty-security-9.2.11.v20150529.jar
C:/Users/DiebolPa/.m2/repository/org/eclipse/jetty/jetty-server/9.2.11.v20150529/jetty-server-9.2.11.v20150529.jar
C:/Users/DiebolPa/.m2/repository/org/eclipse/jetty/jetty-servlet/9.2.11.v20150529/jetty-servlet-9.2.11.v20150529.jar
C:/Users/DiebolPa/.m2/repository/org/eclipse/jetty/jetty-util/9.2.11.v20150529/jetty-util-9.2.11.v20150529.jar
C:/Users/DiebolPa/.m2/repository/org/eclipse/jetty/jetty-webapp/9.2.11.v20150529/jetty-webapp-9.2.11.v20150529.jar
C:/Users/DiebolPa/.m2/repository/org/eclipse/jetty/jetty-xml/9.2.11.v20150529/jetty-xml-9.2.11.v20150529.jar
C:/Users/DiebolPa/workspace/jetty-authentication-example/target/classes
2016-11-15 18:46:38.952:INFO:oejs.Server:jetty-8.1.14.v20131031
2016-11-15 18:46:39.166:INFO::main: Logging initialized @2835ms
2016-11-15 18:46:39.205:WARN:oejuc.AbstractLifeCycle:FAILED org.eclipse.jetty.security.ConstraintSecurityHandler@cb0ed20: java.lang.IllegalStateException: No LoginService for org.eclipse.jetty.security.authentication.BasicAuthenticator@5891e32e in org.eclipse.jetty.security.ConstraintSecurityHandler@cb0ed20
java.lang.IllegalStateException: No LoginService for org.eclipse.jetty.security.authentication.BasicAuthenticator@5891e32e in org.eclipse.jetty.security.ConstraintSecurityHandler@cb0ed20
at org.eclipse.jetty.security.authentication.LoginAuthenticator.setConfiguration(LoginAuthenticator.java:61)
at org.eclipse.jetty.security.SecurityHandler.doStart(SecurityHandler.java:377)
at org.eclipse.jetty.security.ConstraintSecurityHandler.doStart(ConstraintSecurityHandler.java:453)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:95)
at org.eclipse.jetty.server.handler.ScopedHandler.doStart(ScopedHandler.java:115)
at org.eclipse.jetty.server.session.SessionHandler.doStart(SessionHandler.java:124)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:95)
at org.eclipse.jetty.server.handler.ScopedHandler.doStart(ScopedHandler.java:115)
at org.eclipse.jetty.server.handler.ContextHandler.startContext(ContextHandler.java:763)
at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:249)
at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1242)
at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:717)
at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:494)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:95)
at org.eclipse.jetty.server.Server.doStart(Server.java:282)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at net.sourceforge.eclipsejetty.starter.embedded.JettyEmbeddedAdapter.start(JettyEmbeddedAdapter.java:67)
at net.sourceforge.eclipsejetty.starter.common.AbstractJettyLauncherMain.launch(AbstractJettyLauncherMain.java:84)
at net.sourceforge.eclipsejetty.starter.embedded.JettyEmbeddedLauncherMain.main(JettyEmbeddedLauncherMain.java:42)
2016-11-15 18:46:39.206:WARN:oejuc.AbstractLifeCycle:FAILED org.eclipse.jetty.server.session.SessionHandler@8e24743: java.lang.IllegalStateException: No LoginService for org.eclipse.jetty.security.authentication.BasicAuthenticator@5891e32e in org.eclipse.jetty.security.ConstraintSecurityHandler@cb0ed20
java.lang.IllegalStateException: No LoginService for org.eclipse.jetty.security.authentication.BasicAuthenticator@5891e32e in org.eclipse.jetty.security.ConstraintSecurityHandler@cb0ed20
at org.eclipse.jetty.security.authentication.LoginAuthenticator.setConfiguration(LoginAuthenticator.java:61)
at org.eclipse.jetty.security.SecurityHandler.doStart(SecurityHandler.java:377)
at org.eclipse.jetty.security.ConstraintSecurityHandler.doStart(ConstraintSecurityHandler.java:453)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:95)
at org.eclipse.jetty.server.handler.ScopedHandler.doStart(ScopedHandler.java:115)
at org.eclipse.jetty.server.session.SessionHandler.doStart(SessionHandler.java:124)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:95)
at org.eclipse.jetty.server.handler.ScopedHandler.doStart(ScopedHandler.java:115)
at org.eclipse.jetty.server.handler.ContextHandler.startContext(ContextHandler.java:763)
at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:249)
at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1242)
at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:717)
at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:494)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:95)
at org.eclipse.jetty.server.Server.doStart(Server.java:282)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at net.sourceforge.eclipsejetty.starter.embedded.JettyEmbeddedAdapter.start(JettyEmbeddedAdapter.java:67)
at net.sourceforge.eclipsejetty.starter.common.AbstractJettyLauncherMain.launch(AbstractJettyLauncherMain.java:84)
at net.sourceforge.eclipsejetty.starter.embedded.JettyEmbeddedLauncherMain.main(JettyEmbeddedLauncherMain.java:42)
2016-11-15 18:46:39.207:WARN:oejw.WebAppContext:Failed startup of context o.e.j.w.WebAppContext{/,file:/C:/Users/DiebolPa/workspace/jetty-authentication-example/src/main/webapp/},C:\Users\DiebolPa\workspace\jetty-authentication-example\src\main\webapp
java.lang.IllegalStateException: No LoginService for org.eclipse.jetty.security.authentication.BasicAuthenticator@5891e32e in org.eclipse.jetty.security.ConstraintSecurityHandler@cb0ed20
at org.eclipse.jetty.security.authentication.LoginAuthenticator.setConfiguration(LoginAuthenticator.java:61)
at org.eclipse.jetty.security.SecurityHandler.doStart(SecurityHandler.java:377)
at org.eclipse.jetty.security.ConstraintSecurityHandler.doStart(ConstraintSecurityHandler.java:453)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:95)
at org.eclipse.jetty.server.handler.ScopedHandler.doStart(ScopedHandler.java:115)
at org.eclipse.jetty.server.session.SessionHandler.doStart(SessionHandler.java:124)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:95)
at org.eclipse.jetty.server.handler.ScopedHandler.doStart(ScopedHandler.java:115)
at org.eclipse.jetty.server.handler.ContextHandler.startContext(ContextHandler.java:763)
at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:249)
at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1242)
at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:717)
at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:494)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at org.eclipse.jetty.server.handler.HandlerWrapper.doStart(HandlerWrapper.java:95)
at org.eclipse.jetty.server.Server.doStart(Server.java:282)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:64)
at net.sourceforge.eclipsejetty.starter.embedded.JettyEmbeddedAdapter.start(JettyEmbeddedAdapter.java:67)
at net.sourceforge.eclipsejetty.starter.common.AbstractJettyLauncherMain.launch(AbstractJettyLauncherMain.java:84)
at net.sourceforge.eclipsejetty.starter.embedded.JettyEmbeddedLauncherMain.main(JettyEmbeddedLauncherMain.java:42)
2016-11-15 18:46:39.484:INFO:oejs.AbstractConnector:Started SelectChannelConnector@0.0.0.0:8080
------------------------------------------------
Jetty startup finished in 2,7 s.
Used memory: 5,4 MB of 123,0 MB (1,8 GB maximum)
Console available: type "help".
------------------------------------------------
非常感谢您的帮助！