在jetty中部署jenkins报java.lang.IllegalStateException: No LoginService for org.eclipse.jetty.security.authentication.FormAuthenticator

1. Jetty 9.0.3 启动时的错误：

[root@kvm-guest jetty-9.0.3]# java -jar start.jar
Exception in thread "main" java.lang.UnsupportedClassVersionError: org/eclipse/jetty/start/Main : Unsupported major.minor version 51.0
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:634)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)
        at java.net.URLClassLoader.access$000(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:212)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
Could not find the main class: org.eclipse.jetty.start.Main. Program will exit.

原因：Jetty 9 需要 JVM 1.7 的支持（我原来的JVM是1.6）
解决方案：使用Java 1.7即可。

2. 将jenkns.war复制到webapp目录后，启动Jetty，但jenkins访问出错，HTTP ERROR 503。

启动和关闭Jetty的命令为：

[root@kvm-guest jetty-9.0.3]# java -jar start.jar -DSTOP.PORT=8881 -DSTOP.KEY=magic --daemon &

[root@kvm-guest jetty-9.0.3]# java -jar start.jar -DSTOP.PORT=8881 -DSTOP.KEY=magic --stop

在浏览器中访问时，遇到的错误信息如下：

HTTP ERROR: 503
Problem accessing /jenkins/. Reason:
   Service Unavailable
------------
Powered by Jetty

查看Jetty的log中，可以看到如下的错误信息：

2013-05-21 14:33:31.265:WARN:oejuc.AbstractLifeCycle:main: FAILED org.eclipse.jetty.security.ConstraintSecurityHandler@70188b41: java.lang.IllegalStateException: No LoginService for org.eclipse.jetty.security.authentication.FormAuthenticator@790bb6f4 in org.eclipse.jetty.security.ConstraintSecurityHandler@70188b41
java.lang.IllegalStateException: No LoginService for org.eclipse.jetty.security.authentication.FormAuthenticator@790bb6f4 in org.eclipse.jetty.security.ConstraintSecurityHandler@70188b41
        at org.eclipse.jetty.security.authentication.LoginAuthenticator.setConfiguration(LoginAuthenticator.java:67)
        at org.eclipse.jetty.security.authentication.FormAuthenticator.setConfiguration(FormAuthenticator.java:131)
        at org.eclipse.jetty.security.SecurityHandler.doStart(SecurityHandler.java:375)
        at org.eclipse.jetty.security.ConstraintSecurityHandler.doStart(ConstraintSecurityHandler.java:457)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:69)
...................
2013-05-21 14:33:31.267:WARN:oejuc.AbstractLifeCycle:main: FAILED org.eclipse.jetty.server.session.SessionHandler@5b5e91e5: java.lang.IllegalStateException: No LoginService for org.eclipse.jetty.security.authentication.FormAuthenticator@790bb6f4 in org.eclipse.jetty.security.ConstraintSecurityHandler@70188b41
java.lang.IllegalStateException: No LoginService for org.eclipse.jetty.security.authentication.FormAuthenticator@790bb6f4 in org.eclipse.jetty.security.ConstraintSecurityHandler@70188b41
        at org.eclipse.jetty.security.authentication.LoginAuthenticator.setConfiguration(LoginAuthenticator.java:67)
        at org.eclipse.jetty.security.authentication.FormAuthenticator.setConfiguration(FormAuthenticator.java:131)
...................
2013-05-21 14:33:31.268:WARN:oejw.WebAppContext:main: Failed startup of context o.e.j.w.WebAppContext@729b9707{/jenkins,file:/tmp/jetty-0.0.0.0-8080-jenkins.war-_jenkins-any-/webapp/,STARTING}{/root/jetty-9.0.3/webapps.demo/jenkins.war}
java.lang.IllegalStateException: No LoginService for org.eclipse.jetty.security.authentication.FormAuthenticator@790bb6f4 in org.eclipse.jetty.security.ConstraintSecurityHandler@70188b41
        at org.eclipse.jetty.security.authentication.LoginAuthenticator.setConfiguration(LoginAuthenticator.java:67)
        at org.eclipse.jetty.security.authentication.FormAuthenticator.setConfiguration(FormAuthenticator.java:131)
        at org.eclipse.jetty.security.SecurityHandler.doStart(SecurityHandler.java:375)
        at org.eclipse.jetty.security.ConstraintSecurityHandler.doStart(ConstraintSecurityHandler.java:457)
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:69)
        at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:108)
        at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:90)