struts2中的配置文件中只要添加以下配置,那么以后修改配置文件不用重启tomcat的方法。于是自己手动试了试,没想到这一试竟然试出问题来
要添加的代码:
- <constant
name="struts.devMode" value="true" />
struts.devMode也就是struts的开发模式,默认值为false,这里修改为true就可以了,以后一旦就该这个文件中的配置就不用去重启tomcat,着实方便许多。但是问题也出现了:
- 严重:
Exception starting filter struts2 - java.lang.NullPointerException
-
at com.opensymphony.xwork2.util.FileManager$FileRevision.needsReloading(FileManager.java:209) -
at com.opensymphony.xwork2.util.FileManager.fileNeedsReloading(FileManager.java:60) -
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider .needsReload(XmlConfigurationProvider .java:325) -
at org.apache.struts2.config.StrutsXmlConfigurationPr ovider.needsReload(StrutsXmlConfigurationPr ovider.java:168) -
at com.opensymphony.xwork2.config.ConfigurationManager.conditionalReload(ConfigurationManager.java:220) -
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:61) -
at org.apache.struts2.dispatcher.Dispatcher.getContainer(Dispatcher.java:774) -
at org.apache.struts2.dispatcher.ng.InitOperations.initStaticContentLoader(InitOperations.java:77) -
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteF ilter.init(StrutsPrepareAndExecuteF ilter.java:49) -
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:275) -
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:397) -
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:108) -
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3800) -
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4450) -
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791) -
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771) -
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:526) -
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:987) -
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:909) -
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:495) -
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1206) -
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:314) -
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) -
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053) -
at org.apache.catalina.core.StandardHost.start(StandardHost.java:722) -
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) -
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) -
at org.apache.catalina.core.StandardService.start(StandardService.java:516) -
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) -
at org.apache.catalina.startup.Catalina.start(Catalina.java:583) -
at sun.reflect.NativeMethodAccessorImpl .invoke0(Native Method) -
at sun.reflect.NativeMethodAccessorImpl .invoke(NativeMethodAccessorImpl .java:39) -
at sun.reflect.DelegatingMethodAccessor Impl.invoke(DelegatingMethodAccessor Impl.java:25) -
at java.lang.reflect.Method.invoke(Method.java:597) -
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) -
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) - 2010-3-1
22:26:44 org.apache.catalina.core.StandardContext start - 严重:
Error filterStart
- 严重:
Exception starting filter struts2 - java.lang.NullPointerException
-
at com.opensymphony.xwork2.util.FileManager$FileRevision.needsReloading(FileManager.java:209) -
at com.opensymphony.xwork2.util.FileManager.fileNeedsReloading(FileManager.java:60) -
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider .needsReload(XmlConfigurationProvider .java:325) -
at org.apache.struts2.config.StrutsXmlConfigurationPr ovider.needsReload(StrutsXmlConfigurationPr ovider.java:168) -
at com.opensymphony.xwork2.config.ConfigurationManager.conditionalReload(ConfigurationManager.java:220) -
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:61) -
at org.apache.struts2.dispatcher.Dispatcher.getContainer(Dispatcher.java:774) -
at org.apache.struts2.dispatcher.ng.InitOperations.initStaticContentLoader(InitOperations.java:77) -
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteF ilter.init(StrutsPrepareAndExecuteF ilter.java:49) -
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:275) -
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:397) -
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:108) -
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3800) -
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4450) -
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791) -
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771) -
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:526) -
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:987) -
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:909) -
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:495) -
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1206) -
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:314) -
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) -
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053) -
at org.apache.catalina.core.StandardHost.start(StandardHost.java:722) -
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) -
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) -
at org.apache.catalina.core.StandardService.start(StandardService.java:516) -
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) -
at org.apache.catalina.startup.Catalina.start(Catalina.java:583) -
at sun.reflect.NativeMethodAccessorImpl .invoke0(Native Method) -
at sun.reflect.NativeMethodAccessorImpl .invoke(NativeMethodAccessorImpl .java:39) -
at sun.reflect.DelegatingMethodAccessor Impl.invoke(DelegatingMethodAccessor Impl.java:25) -
at java.lang.reflect.Method.invoke(Method.java:597) -
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288) -
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413) - 2010-3-1
22:26:44 org.apache.catalina.core.StandardContext start - 严重:
Error filterStart
经过google一搜,有说将<constant name="struts.devMode" value="true" />中的值改为false的,我要的就是true,改成false不违背了我本意,后来经过多次查找发现有人说这个属于struts2.1的bug,tomcat目录不能有空格。我仔细一瞧我的tomcat路径,还真出现空格的。。。比如D:\Program Files\Apache Software Foundation\Tomcat 6.0改成E:\Tomcat6
最后通过自己修改路径发现此方法可行。