Tomcat错误日志控制台不显示

谁践踏了优雅 2022-12-29 02:27 21阅读 0赞

Hello,I'm Shendi

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#  #

**目录**

问题描述

问题解决

1. Create a file called log4j.properties with the following content and save it into $CATALINA\_BASE/lib

2.Download Log4J (Tomcat requires v1.2.x).

3.Download or build tomcat-juli.jar and tomcat-juli-adapters.jar that are available as an "extras" component for Tomcat.

4.If you want to configure Tomcat to use log4j globally:

5.If you are running Tomcat with separate $CATALINA\_HOME and $CATALINA\_BASE and want to configure to use log4j in a single $CATALINA\_BASE only:

6.Delete $CATALINA\_BASE/conf/logging.properties to prevent java.util.logging generating zero length log files.

7.启动Tomcat

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# 问题描述 #

当我在Eclipse里编写好web程序后,直接在文件系统中启动Tomcat,发现没有错误日志输出了

但是在Eclipse中启动会有日志输出

直接使用命令行的方式跑catalina.bat 也没有作用

#    问题解决 #

通过查阅,发现高版本Tomcat默认是不带控制台日志输出的

解决办法就是将默认日志输出替换为 log4j

官网文档,可进入官网自行查看

[http://tomcat.apache.org/tomcat-7.0-doc/logging.html\#Using\_Log4j][http_tomcat.apache.org_tomcat-7.0-doc_logging.html_Using_Log4j]

### 1. Create a file called `log4j.properties` with the following content and save it into `$CATALINA_BASE/lib` ###

创建log4.properties到Tomcat的lib目录下

默认内容如下

log4j.rootLogger = INFO, CATALINA
    
    # Define all the appenders
    log4j.appender.CATALINA = org.apache.log4j.DailyRollingFileAppender
    log4j.appender.CATALINA.File = ${catalina.base}/logs/catalina
    log4j.appender.CATALINA.Append = true
    log4j.appender.CATALINA.Encoding = UTF-8
    # Roll-over the log once per day
    log4j.appender.CATALINA.DatePattern = '.'yyyy-MM-dd'.log'
    log4j.appender.CATALINA.layout = org.apache.log4j.PatternLayout
    log4j.appender.CATALINA.layout.ConversionPattern = %d [%t] %-5p %c- %m%n
    
    log4j.appender.LOCALHOST = org.apache.log4j.DailyRollingFileAppender
    log4j.appender.LOCALHOST.File = ${catalina.base}/logs/localhost
    log4j.appender.LOCALHOST.Append = true
    log4j.appender.LOCALHOST.Encoding = UTF-8
    log4j.appender.LOCALHOST.DatePattern = '.'yyyy-MM-dd'.log'
    log4j.appender.LOCALHOST.layout = org.apache.log4j.PatternLayout
    log4j.appender.LOCALHOST.layout.ConversionPattern = %d [%t] %-5p %c- %m%n
    
    log4j.appender.MANAGER = org.apache.log4j.DailyRollingFileAppender
    log4j.appender.MANAGER.File = ${catalina.base}/logs/manager
    log4j.appender.MANAGER.Append = true
    log4j.appender.MANAGER.Encoding = UTF-8
    log4j.appender.MANAGER.DatePattern = '.'yyyy-MM-dd'.log'
    log4j.appender.MANAGER.layout = org.apache.log4j.PatternLayout
    log4j.appender.MANAGER.layout.ConversionPattern = %d [%t] %-5p %c- %m%n
    
    log4j.appender.HOST-MANAGER = org.apache.log4j.DailyRollingFileAppender
    log4j.appender.HOST-MANAGER.File = ${catalina.base}/logs/host-manager
    log4j.appender.HOST-MANAGER.Append = true
    log4j.appender.HOST-MANAGER.Encoding = UTF-8
    log4j.appender.HOST-MANAGER.DatePattern = '.'yyyy-MM-dd'.log'
    log4j.appender.HOST-MANAGER.layout = org.apache.log4j.PatternLayout
    log4j.appender.HOST-MANAGER.layout.ConversionPattern = %d [%t] %-5p %c- %m%n
    
    log4j.appender.CONSOLE = org.apache.log4j.ConsoleAppender
    log4j.appender.CONSOLE.Encoding = UTF-8
    log4j.appender.CONSOLE.layout = org.apache.log4j.PatternLayout
    log4j.appender.CONSOLE.layout.ConversionPattern = %d [%t] %-5p %c- %m%n
    
    # Configure which loggers log to which appenders
    log4j.logger.org.apache.catalina.core.ContainerBase.[Catalina].[localhost] = INFO, LOCALHOST
    log4j.logger.org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/manager] =\
      INFO, MANAGER
    log4j.logger.org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/host-manager] =\
      INFO, HOST-MANAGER

### 2.[Download Log4J][] (Tomcat requires v1.2.x). ###

下载log4j,版本最低为1.2

这是官网提供的链接 [http://logging.apache.org/log4j][Download Log4J]

也可以直接通过此链接下载

[http://archive.apache.org/dist/logging/log4j/1.2.17/][http_archive.apache.org_dist_logging_log4j_1.2.17]

### 3.Download or build `tomcat-juli.jar` and `tomcat-juli-adapters.jar` that are available as an "extras" component for Tomcat. ###

下载 tomcat-juli.jar 和 tomcat-juli-adapters.jar

官网链接 [http://tomcat.apache.org/tomcat-7.0-doc/extras.html][http_tomcat.apache.org_tomcat-7.0-doc_extras.html]

可以在 [http://tomcat.apache.org/download-70.cgi][http_tomcat.apache.org_download-70.cgi] 下找到extras 里找到对应jar

这里直接提供地址了,不确定你是否需要的是这个版本

tomcat-juli

[https://mirrors.bfsu.edu.cn/apache/tomcat/tomcat-7/v7.0.107/bin/extras/tomcat-juli.jar][https_mirrors.bfsu.edu.cn_apache_tomcat_tomcat-7_v7.0.107_bin_extras_tomcat-juli.jar]

tomcat-juli-adapters

[https://mirrors.bfsu.edu.cn/apache/tomcat/tomcat-7/v7.0.107/bin/extras/tomcat-juli-adapters.jar][https_mirrors.bfsu.edu.cn_apache_tomcat_tomcat-7_v7.0.107_bin_extras_tomcat-juli-adapters.jar]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxODA2OTY2_size_16_color_FFFFFF_t_70][]

### 4.If you want to configure Tomcat to use log4j globally: ###

配置Tomcat全局使用log4j

*  Put `log4j.jar` and `tomcat-juli-adapters.jar` from "extras" into `$CATALINA_HOME/lib`.
 *  Replace `$CATALINA_HOME/bin/tomcat-juli.jar` with `tomcat-juli.jar` from "extras".

将log4j和tomcat-juli-adapters放到Tomcat的lib目录下

将tomcat-juli.jar放入Tomcat的bin目录下,如果有,直接替换

### 5.If you are running Tomcat with separate $CATALINA\_HOME and $CATALINA\_BASE and want to configure to use log4j in a single $CATALINA\_BASE only: ###

这一部分没啥好说的,一般都不设置自己的目录,所以我就直接用翻译软件复制过来了

如果您使用单独的$ CATALINA\_HOME和$ CATALINA\_BASE运行Tomcat，并且希望配置为仅在单个$ CATALINA\_BASE中使用log4j：

*  创建`$CATALINA_BASE/bin`和 `$CATALINA_BASE/lib`目录（如果不存在）。
 *  将`log4j.jar`与 `tomcat-juli-adapters.jar`从“临时演员”成 `$CATALINA_BASE/lib`
 *  `tomcat-juli.jar`从“ extras” 放入`$CATALINA_BASE/bin/tomcat-juli.jar`
 *  如果使用[安全管理器][Link 1]运行，则 需要编辑 `$CATALINA_BASE/conf/catalina.policy`文件以将其调整为使用tomcat-juli.jar的其他副本。

### 6.Delete `$CATALINA_BASE/conf/logging.properties` to prevent java.util.logging generating zero length log files. ###

删除conf下的loggin.properties文件

### 7.启动Tomcat ###

[http_tomcat.apache.org_tomcat-7.0-doc_logging.html_Using_Log4j]: http://tomcat.apache.org/tomcat-7.0-doc/logging.html#Using_Log4j
[Download Log4J]: http://logging.apache.org/log4j
[http_archive.apache.org_dist_logging_log4j_1.2.17]: http://archive.apache.org/dist/logging/log4j/1.2.17/
[http_tomcat.apache.org_tomcat-7.0-doc_extras.html]: http://tomcat.apache.org/tomcat-7.0-doc/extras.html
[http_tomcat.apache.org_download-70.cgi]: http://tomcat.apache.org/download-70.cgi
[https_mirrors.bfsu.edu.cn_apache_tomcat_tomcat-7_v7.0.107_bin_extras_tomcat-juli.jar]: https://mirrors.bfsu.edu.cn/apache/tomcat/tomcat-7/v7.0.107/bin/extras/tomcat-juli.jar
[https_mirrors.bfsu.edu.cn_apache_tomcat_tomcat-7_v7.0.107_bin_extras_tomcat-juli-adapters.jar]: https://mirrors.bfsu.edu.cn/apache/tomcat/tomcat-7/v7.0.107/bin/extras/tomcat-juli-adapters.jar
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxODA2OTY2_size_16_color_FFFFFF_t_70]: /images/20221120/47d48c980c084da3b1bfa19f55bcd374.png
[Link 1]: http://tomcat.apache.org/tomcat-7.0-doc/security-manager-howto.html