当我使用＆＃34; gradle tomcatRunWar＆＃34;从Eclipse中运行我的Spring MVC应用程序时我得到以下错误。构建仍然完成，Tomcat随我的应用程序一起启动，但我无法弄清楚如何在我的log4j.xml中指定输出日志文件。如果我指定一个绝对路径，它工作正常。但是如果我指定一个相对路径，我总是会得到以下错误。
理想情况下，我希望在创建其余构建工件的任何位置创建日志文件。如果我直接将WAR复制到Tomcat的webapps并手动启动它，这样就可以了。
<appender name="R" class="org.apache.log4j.RollingFileAppender">
<!-- THIS WORKS: <param name="File" value="C:/Users/<username>/ws/project1/logs/mylog.log" /> -->
<!--- below line doesn't work when launching from Eclipse -->
<param name="File" value="mylog.log" />
<param name="Append" value="true" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%t %-5p %c{2} - %m%n"/>
</layout>
</appender>
log4j:ERROR setFile(null,true) call failed.
java.io.FileNotFoundException: mylog.log (Access is denied)
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.<init>(FileOutputStream.java:221)
at java.io.FileOutputStream.<init>(FileOutputStream.java:142)
at org.apache.log4j.FileAppender.setFile(FileAppender.java:294)
at org.apache.log4j.RollingFileAppender.setFile(RollingFileAppender.java:207)
at org.apache.log4j.FileAppender.activateOptions(FileAppender.java:165)
at org.apache.log4j.config.PropertySetter.activate(PropertySetter.java:307)
at org.apache.log4j.xml.DOMConfigurator.parseAppender(DOMConfigurator.java:295)
at org.apache.log4j.xml.DOMConfigurator.findAppenderByName(DOMConfigurator.java:176)
at org.apache.log4j.xml.DOMConfigurator.findAppenderByReference(DOMConfigurator.java:191)
at org.apache.log4j.xml.DOMConfigurator.parseChildrenOfLoggerElement(DOMConfigurator.java:523)
at org.apache.log4j.xml.DOMConfigurator.parseRoot(DOMConfigurator.java:492)
at org.apache.log4j.xml.DOMConfigurator.parse(DOMConfigurator.java:1006)
at org.apache.log4j.xml.DOMConfigurator.doConfigure(DOMConfigurator.java:872)
at org.apache.log4j.xml.DOMConfigurator.doConfigure(DOMConfigurator.java:778)
at org.apache.log4j.helpers.OptionConverter.selectAndConfigure(OptionConverter.java:526)
at org.apache.log4j.LogManager.<clinit>(LogManager.java:127)
at org.slf4j.impl.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:66)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:270)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:281)
at com.....config.WebAppInitializer.<clinit>(WebAppInitializer.java:21)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at java.lang.Class.newInstance(Class.java:374)
at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:162)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5423)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)