速度和log4J错误
我构建了一个在我的localhost（tomcat）中完美运行的webapp。 但是当我尝试部署时，在init（）中速度崩溃，让我在这里留下这个奇怪的堆栈跟踪（抱歉大小）：
ERROR [main] (VelocityConfigurator.java:62) - Error initializing Velocity! org.apache.velocity.exception.VelocityException: Failed to initialize an instance of org.apache.velocity.runtime.log.Log4JLogChute with the current runtime configuration. at org.apache.velocity.runtime.log.LogManager.createLogChute(LogManager.java:206) at org.apache.velocity.runtime.log.LogManager.updateLog(LogManager.java:255) at org.apache.velocity.runtime.RuntimeInstance.initializeLog(RuntimeInstance.java:795) at org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:250) at org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:589) at org.apache.velocity.runtime.RuntimeSingleton.init(RuntimeSingleton.java:229) at org.apache.velocity.app.Velocity.init(Velocity.java:107) at com.webcodei.velociraptor.velocity.VelocityConfigurator.initVelocity(VelocityConfigurator.java:57) at com.webcodei.velociraptor.velocity.VelocityConfigurator.configure(VelocityConfigurator.java:42) at com.webcodei.velociraptor.VelociListener.contextInitialized(VelociListener.java:26) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3827) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4336) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:761) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:741) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525) at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:626) at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:553) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:488) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1023) at org.apache.catalina.core.StandardHost.start(StandardHost.java:719) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1015) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:448) at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) at org.apache.catalina.startup.Catalina.start(Catalina.java:552) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.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) Caused by: java.lang.RuntimeException: Error configuring Log4JLogChute : at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at org.apache.velocity.util.ExceptionUtils.createWithCause(ExceptionUtils.java:67) at org.apache.velocity.util.ExceptionUtils.createRuntimeException(ExceptionUtils.java:45) at org.apache.velocity.runtime.log.Log4JLogChute.initAppender(Log4JLogChute.java:133) at org.apache.velocity.runtime.log.Log4JLogChute.init(Log4JLogChute.java:85) at org.apache.velocity.runtime.log.LogManager.createLogChute(LogManager.java:157) ... 33 more Caused by: java.io.FileNotFoundException: velocity.log (Permission denied) at java.io.FileOutputStream.openAppend(Native Method) at java.io.FileOutputStream.(FileOutputStream.java:177) at java.io.FileOutputStream.(FileOutputStream.java:102) at org.apache.log4j.FileAppender.setFile(FileAppender.java:290) at org.apache.log4j.RollingFileAppender.setFile(RollingFileAppender.java:194) at org.apache.log4j.FileAppender.(FileAppender.java:109) at org.apache.log4j.RollingFileAppender.(RollingFileAppender.java:72) at org.apache.velocity.runtime.log.Log4JLogChute.initAppender(Log4JLogChute.java:118) ... 35 more ERROR [main] (VelocityConfigurator.java:63) - java.lang.RuntimeException: Error configuring Log4JLogChute : org.apache.velocity.exception.VelocityException: Failed to initialize an instance of org.apache.velocity.runtime.log.Log4JLogChute with the current runtime configuration. at org.apache.velocity.runtime.log.LogManager.createLogChute(LogManager.java:206) at org.apache.velocity.runtime.log.LogManager.updateLog(LogManager.java:255) at org.apache.velocity.runtime.RuntimeInstance.initializeLog(RuntimeInstance.java:795) at org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:250) at org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:589) at org.apache.velocity.runtime.RuntimeSingleton.init(RuntimeSingleton.java:229) at org.apache.velocity.app.Velocity.init(Velocity.java:107) at com.webcodei.velociraptor.velocity.VelocityConfigurator.initVelocity(VelocityConfigurator.java:57) at com.webcodei.velociraptor.velocity.VelocityConfigurator.configure(VelocityConfigurator.java:42) at com.webcodei.velociraptor.VelociListener.contextInitialized(VelociListener.java:26) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3827) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4336) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:761) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:741) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525) at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:626) at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:553) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:488) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1023) at org.apache.catalina.core.StandardHost.start(StandardHost.java:719) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1015) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:448) at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) at org.apache.catalina.startup.Catalina.start(Catalina.java:552) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.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) Caused by: java.lang.RuntimeException: Error configuring Log4JLogChute : at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at org.apache.velocity.util.ExceptionUtils.createWithCause(ExceptionUtils.java:67) at org.apache.velocity.util.ExceptionUtils.createRuntimeException(ExceptionUtils.java:45) at org.apache.velocity.runtime.log.Log4JLogChute.initAppender(Log4JLogChute.java:133) at org.apache.velocity.runtime.log.Log4JLogChute.init(Log4JLogChute.java:85) at org.apache.velocity.runtime.log.LogManager.createLogChute(LogManager.java:157) ... 33 more Caused by: java.io.FileNotFoundException: velocity.log (Permission denied) at java.io.FileOutputStream.openAppend(Native Method) at java.io.FileOutputStream.(FileOutputStream.java:177) at java.io.FileOutputStream.(FileOutputStream.java:102) at org.apache.log4j.FileAppender.setFile(FileAppender.java:290) at org.apache.log4j.RollingFileAppender.setFile(RollingFileAppender.java:194) at org.apache.log4j.FileAppender.(FileAppender.java:109) at org.apache.log4j.RollingFileAppender.(RollingFileAppender.java:72) at org.apache.velocity.runtime.log.Log4JLogChute.initAppender(Log4JLogChute.java:118) ... 35 more ERROR [main] (VelocityConfigurator.java:64) - Failed to initialize an instance of org.apache.velocity.runtime.log.Log4JLogChute with the current runtime configuration. org.apache.velocity.exception.VelocityException: Failed to initialize an instance of org.apache.velocity.runtime.log.Log4JLogChute with the current runtime configuration. at org.apache.velocity.runtime.log.LogManager.createLogChute(LogManager.java:206) at org.apache.velocity.runtime.log.LogManager.updateLog(LogManager.java:255) at org.apache.velocity.runtime.RuntimeInstance.initializeLog(RuntimeInstance.java:795) at org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:250) at org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:589) at org.apache.velocity.runtime.RuntimeSingleton.init(RuntimeSingleton.java:229) at org.apache.velocity.app.Velocity.init(Velocity.java:107) at com.webcodei.velociraptor.velocity.VelocityConfigurator.initVelocity(VelocityConfigurator.java:57) at com.webcodei.velociraptor.velocity.VelocityConfigurator.configure(VelocityConfigurator.java:42) at com.webcodei.velociraptor.VelociListener.contextInitialized(VelociListener.java:26) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3827) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4336) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:761) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:741) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525) at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:626) at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:553) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:488) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1023) at org.apache.catalina.core.StandardHost.start(StandardHost.java:719) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1015) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:448) at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) at org.apache.catalina.startup.Catalina.start(Catalina.java:552) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.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) Caused by: java.lang.RuntimeException: Error configuring Log4JLogChute : at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at org.apache.velocity.util.ExceptionUtils.createWithCause(ExceptionUtils.java:67) at org.apache.velocity.util.ExceptionUtils.createRuntimeException(ExceptionUtils.java:45) at org.apache.velocity.runtime.log.Log4JLogChute.initAppender(Log4JLogChute.java:133) at org.apache.velocity.runtime.log.Log4JLogChute.init(Log4JLogChute.java:85) at org.apache.velocity.runtime.log.LogManager.createLogChute(LogManager.java:157) ... 33 more Caused by: java.io.FileNotFoundException: velocity.log (Permission denied) at java.io.FileOutputStream.openAppend(Native Method) at java.io.FileOutputStream.(FileOutputStream.java:177) at java.io.FileOutputStream.(FileOutputStream.java:102) at org.apache.log4j.FileAppender.setFile(FileAppender.java:290) at org.apache.log4j.RollingFileAppender.setFile(RollingFileAppender.java:194) at org.apache.log4j.FileAppender.(FileAppender.java:109) at org.apache.log4j.RollingFileAppender.(RollingFileAppender.java:72) at org.apache.velocity.runtime.log.Log4JLogChute.initAppender(Log4JLogChute.java:118) ... 35 more
有谁知道解决方法？ 或者至少了解错误？ 我做了一些谷歌搜索，但没有线索..只有这个页面面临同样的问题，但没有解决方案..
我认为这条线有答案。 看起来创建velocity.log文件时出现问题。 你的配置文件是什么样的？
Caused by: java.io.FileNotFoundException: velocity.log (Permission denied)
Velocity试图将日志文件放在Tomcat启动的目录中，我相信它实际上是/。
您可以通过将这些行添加到velocity.properties来强制Velocity登录到Tomcat的标准日志：
runtime.log.logsystem.class=org.apache.velocity.runtime.log.SimpleLog4JLogSystem runtime.log.logsystem.log4j.category=velocity runtime.log.logsystem.log4j.logger=velocity
velocity.properties应该进入/WEB-INF/velocity.properties，但你可以在web.xml中的servlet定义中覆盖它。
如果您是按属性而不是velocity.properties初始化Velocity：
VelocityEngine engine = new VelocityEngine(); Properties props = new Properties(); props.put("runtime.log.logsystem.class", "org.apache.velocity.runtime.log.SimpleLog4JLogSystem"); props.put("runtime.log.logsystem.log4j.category", "velocity"); props.put("runtime.log.logsystem.log4j.logger", "velocity"); engine.init(props);
在这里阅读更多：
http://velocity.apache.org/engine/devel/developer-guide.html#usinglog4jwithexistinglogger
和这里：
尝试打开日志文件的过程似乎没有这样做的权限：
Caused by: java.io.FileNotFoundException: velocity.log (Permission denied)
我遇到了同样的问题，并编写了一个描述性博客，其中包含可能的原因和解决方案。 链接在这里。 http://techieme.in/failed-to-initialize-an-instance-of-org-apache-velocity-runtime-log-servletlogchute-with-the-current-runtime-configuration/
我也有相同的问题，但我能够解决这个问题，将默认日志文件覆盖到自定义日志文件。 只需在调用evaluate Function的方法中添加这3行代码即可。
Velocity.setProperty(RuntimeConstants.RUNTIME_LOG_LOGSYSTEM_CLASS,"org.apache.velocity.runtime.log.Log4JLogChute"); Velocity.setProperty("runtime.log.logsystem.log4j.logger","com.mindtree.igg.website.email.TemplateMergeUtilVelocityImpl"); VelocityContext velocityContext = new VelocityContext(parameters);
这是解决它的一种方法，即不使用属性文件。
我的代码遇到了完全相同的问题，经过数小时的谷歌搜索后，我决定在我的项目中添加一些其他Velocity库。 我的项目只有apache-velocity jar文件，然后从这里 ，我还将Velocity-Dep添加到我的Maven项目和Yesssssssssss！ 胜利！