Error in velocity and log4J

Question 1

Error in velocity and log4J

java servlets log4j stack-trace velocity

José Leal · May 11, 2009 · Viewed 29.9k times · Source

Answer

Answer

Velocity tries to put the logfile in the directory Tomcat was started from, and I believe that is actually /.

You can force Velocity to log to Tomcat's standard log by adding these lines to your velocity.properties:

runtime.log.logsystem.class=org.apache.velocity.runtime.log.SimpleLog4JLogSystem
runtime.log.logsystem.log4j.category=velocity
runtime.log.logsystem.log4j.logger=velocity

The velocity.properties should go into /WEB-INF/velocity.properties but you can override that in you servlet definition in web.xml.

If you're initialising Velocity by properties and not the velocity.properties:

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);

Read more here:

http://velocity.apache.org/engine/devel/developer-guide.html#usinglog4jwithexistinglogger

and here:

http://minaret.biz/tips/tomcatLogging.html#velocity

Question 2

I built a webapp that works perfectly fine in my localhost (tomcat). But when I tried to deploy, velocity crashes in init(), leaving me with this strange stack trace here (sorry for the size):


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

Does anyone knows the workaround? Or at least understood the error? I've done some googling but no clues.. only this page facing the same problem but no solution..

Error in velocity and log4J

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