web 项目log4j配置无法获取文件（java.io.FileNotFoundException: /logs/log.txt (No such file or directory)）猜想

最新推荐文章于 2025-06-18 10:35:30 发布
最新推荐文章于 2025-06-18 10:35:30 发布
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分类专栏： java 文章标签： java web spring maven log4j.properties
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本文链接：https://blog.youkuaiyun.com/fj200821/article/details/54375363
本文解决了因Log4j配置顺序不当导致的日志记录失败问题。通过调整web.xml中的监听器顺序，确保日志文件路径正确设置。

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现象：信息: No Spring WebApplicationInitializer types detected on classpath
log4j:ERROR setFile(null,true) call failed.
java.io.FileNotFoundException: /logs/log.txt (No such file or directory)
at java.io.FileOutputStream.open0(Native Method)
at java.io.FileOutputStream.open(FileOutputStream.java:270)
at java.io.FileOutputStream.<init>(FileOutputStream.java:213)
at java.io.FileOutputStream.<init>(FileOutputStream.java:133)
at org.apache.log4j.FileAppender.setFile(FileAppender.java:294)
at org.apache.log4j.FileAppender.activateOptions(FileAppender.java:165)
at org.apache.log4j.DailyRollingFileAppender.activateOptions(DailyRollingFileAppender.java:223)
at org.apache.log4j.config.PropertySetter.activate(PropertySetter.java:307)
at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:172)
at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:104)
at org.apache.log4j.PropertyConfigurator.parseAppender(PropertyConfigurator.java:809)
at org.apache.log4j.PropertyConfigurator.parseCategory(PropertyConfigurator.java:735)
at org.apache.log4j.PropertyConfigurator.configureRootCategory(PropertyConfigurator.java:615)
at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:502)
at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:547)
at org.apache.log4j.helpers.OptionConverter.selectAndConfigure(OptionConverter.java:483)
at org.apache.log4j.LogManager.<clinit>(LogManager.java:127)
at org.apache.log4j.Logger.getLogger(Logger.java:104)
at org.apache.commons.logging.impl.Log4JLogger.getLogger(Log4JLogger.java:262)
at org.apache.commons.logging.impl.Log4JLogger.<init>(Log4JLogger.java:108)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.apache.commons.logging.impl.LogFactoryImpl.createLogFromClass(LogFactoryImpl.java:1025)
at org.apache.commons.logging.impl.LogFactoryImpl.discoverLogImplementation(LogFactoryImpl.java:844)
at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:541)
at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:292)
at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:269)
at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:655)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:270)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:112)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:5118)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5634)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1571)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1561)
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:745)

log4j:ERROR Either File or DatePattern options are not set for appender [logfile].

web.xml 产生问题配置：

<context-param>

<param-name>webAppRootPath</param-name>

<param-value>webapp.root</param-value>

</context-param>


<context-param><!-- log4j.properties 配置 -->

<param-name>log4jConfigLocation</param-name>

<param-value>/WEB-INF/classes/log4j.properties</param-value>

</context-param>


<context-param>

<param-name>log4jRefreshInterval</param-name>

<param-value>3000</param-value>

</context-param>

<!--配置监听器 ContextLoaderListener的作用就是启动Web容器时，自动装配ApplicationContext的配置信息 -->

<listener>

<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

</listener>

    <!-- IntrospectorCleanupListener 1、此监听器主要用于解决java.beans.Introspector导致的内存泄漏的问题 

2、此监听器应该配置在web.xml中与Spring相关监听器中的第一个位置(也要在ContextLoaderListener的前面) 3、JDK中的java.beans.Introspector类的用途是发现Java类是否符合JavaBean规范如果有的框架或程序用到了Introspector类,那么就会启用一个系统级别的缓存,此缓存会 

存放一些曾加载并分析过的JavaBean的引用。当Web服务器关闭时,由于此缓存中存放着这些JavaBean的引用,所以垃圾回收器无法回收Web容器中的JavaBean对象,最后导致 

内存变大。而org.springframework.web.util.IntrospectorCleanupListener就是专门用来处理Introspector内存泄漏问题的辅助类。IntrospectorCleanupListener会在 

Web服务器停止时清理Introspector缓存,使那些Javabean能被垃圾回收器正确回收。Spring自身不会出现这种问题，因为Spring在加载并分析完一个类之后会马上刷新 

JavaBeans Introspector缓存,这就保证Spring中不会出现这种内存泄漏的问题。但有些程序和框架在使用了JavaBeans Introspector之后,没有进行清理工作(如 

Quartz,Struts),最后导致内存泄漏 -->


<listener>

<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>

</listener>

<!-- IntrospectorCleanupListener -->


<!-- Log4jConfigListener -->

<listener>

<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>

</listener>

<!-- Log4jConfigListener 就是为输出LOG准备的，可以控制台输出、文件、等很多种输出。 这些LOG可以为开发调试、发布后运行的意外调试、等 -->

    


log4j.properties 配置：

#DEBUG < INFO < WARN < ERROR < FATAL

log4j.rootLogger=DEBUG,console,logfile


#console configure

log4j.appender.console=org.apache.log4j.ConsoleAppender

log4j.appender.console.layout=org.apache.log4j.PatternLayout

log4j.appender.console.layout.ConversionPattern=[BIKE] %d{yyyy-MM-dd HH:mm:ss} [%5p] (%F:%L) - %m%n

log4j.appender.console.Encoding=UTF-8


#logfile configure

log4j.appender.logfile=org.apache.log4j.DailyRollingFileAppender

log4j.appender.logfile.File=${webapp.root}/logs/log.txt

log4j.appender.logfile.layout=org.apache.log4j.PatternLayout

log4j.appender.logfile.layout.ConversionPattern= %d %p [%c] - <%m>%n

log4j.appender.logfile.Threshold=INFO

log4j.appender.logfile.Encoding=UTF-8


log4j.logger.freemarker=FATAL

log4j.logger.org.springframework=WARN

log4j.logger.org.mybatis=DEBUG 

log4j.logger.net.sf.ehcache=ERROR


解决方法：把

<listener>

<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>

</listener>

移动所以

context-param 之后就行

解决后web.xml配置：

<context-param>

<param-name>webAppRootPath</param-name>

<param-value>webapp.root</param-value>

</context-param>


<context-param><!-- log4j.properties 配置 -->

<param-name>log4jConfigLocation</param-name>

<param-value>/WEB-INF/classes/log4j.properties</param-value>

</context-param>


<context-param>

<param-name>log4jRefreshInterval</param-name>

<param-value>3000</param-value>

</context-param>

<!-- Log4jConfigListener -->

<listener>

<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>

</listener>

<!-- Log4jConfigListener 就是为输出LOG准备的，可以控制台输出、文件、等很多种输出。 这些LOG可以为开发调试、发布后运行的意外调试、等 -->

    


猜想：

此问题与web.xml加载顺序有关 “context-param -> listener -> filter -> servlet” ；

特别说明 如果在web.xml中已经配置了org.springframework.web.util.Log4jConfigListener这个监听器， 

则不需要配置WebAppRootListener了。因为Log4jConfigListener已经包含了WebAppRootListener的功能。 

WebAppRootListener要在ApplicationContext的ContextLoaderListener之前， 否则ApplicationContext的bean注入根目录值时会发生无法注入异常


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是log4j.properties与tomcat的log4j重名的原因 你把/WEB-INF/classes/log4j.properties的log4j配置文件改个名字看(如:log.properties) 因为在tomcat启动是默认去找log4j.properties,但此时Listener还没有起来,tomcat就要往/WEB-INF/logs/log4j.log 写日志就找不到了 
idea java读取非本项目文件夹内的文件 java.io.FileNotFoundException: File E:/sunwukong.txt does not exist
12-05
在Java中读取非本项目文件夹内的文件时，可能会遇到`java.io.FileNotFoundException`异常。这个异常通常表示指定的文件路径不存在或者无法访问。针对你提到的路径`E:/sunwukong.txt`，以下是一些可能的原因和解决...
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