DWR init失败，求大神指点

org.directwebremoting.extend.ContainerConfigurationException: org.directwebremoting.extend.ContainerConfigurationException: None of the configured ContainerAbstractions claims isNativeEnvironment=true. Implementations tested: [org.directwebremoting.server.servlet3.Servlet3ContainerAbstraction, , org.directwebremoting.server.jetty.JettyContainerAbstraction, , org.directwebremoting.server.grizzly.GrizzlyContainerAbstraction, , org.directwebremoting.server.tomcat.TomcatContainerAbstraction, , org.directwebremoting.server.servlet2.Servlet2ContainerAbstraction]
at org.directwebremoting.impl.StartupUtil.createAndSetupDefaultContainer(StartupUtil.java:194)
at org.directwebremoting.servlet.DwrServlet.createContainer(DwrServlet.java:101)
at org.directwebremoting.servlet.DwrServlet.init(DwrServlet.java:64)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1231)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1144)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1031)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4997)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5289)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1408)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1398)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.directwebremoting.extend.ContainerConfigurationException: None of the configured ContainerAbstractions claims isNativeEnvironment=true. Implementations tested: [org.directwebremoting.server.servlet3.Servlet3ContainerAbstraction, , org.directwebremoting.server.jetty.JettyContainerAbstraction, , org.directwebremoting.server.grizzly.GrizzlyContainerAbstraction, , org.directwebremoting.server.tomcat.TomcatContainerAbstraction, , org.directwebremoting.server.servlet2.Servlet2ContainerAbstraction]
at org.directwebremoting.impl.StartupUtil.resolveMultipleImplementations(StartupUtil.java:422)
at org.directwebremoting.impl.StartupUtil.setupDefaultContainer(StartupUtil.java:262)
at org.directwebremoting.impl.StartupUtil.createAndSetupDefaultContainer(StartupUtil.java:189)
... 14 more

org.directwebremoting.extend.ContainerConfigurationException: None of the configured ContainerAbstractions claims isNativeEnvironment=true.
配置的问题，需要将某个ContainerAbstractions的isNativeEnvironment设置为true