打开Tomcat目录conflogging.properties，修改如下，所有日志输出到tomcat开头的文件中

 1catalina.org.apache.juli.FileHandler.level = FINE

1catalina.org.apache.juli.FileHandler.directory = ${catalina.base}/logs

# 1catalina.org.apache.juli.FileHandler.prefix = catalina.

1catalina.org.apache.juli.FileHandler.prefix = tomcat.

2localhost.org.apache.juli.FileHandler.level = FINE

2localhost.org.apache.juli.FileHandler.directory = ${catalina.base}/logs

# 2localhost.org.apache.juli.FileHandler.prefix = localhost.

2localhost.org.apache.juli.FileHandler.prefix = tomcat.

3manager.org.apache.juli.FileHandler.level = FINE

3manager.org.apache.juli.FileHandler.directory = ${catalina.base}/logs

# 3manager.org.apache.juli.FileHandler.prefix = manager.

3manager.org.apache.juli.FileHandler.prefix = tomcat.

4host-manager.org.apache.juli.FileHandler.level = FINE

4host-manager.org.apache.juli.FileHandler.directory = ${catalina.base}/logs

# 4host-manager.org.apache.juli.FileHandler.prefix = host-manager.

4host-manager.org.apache.juli.FileHandler.prefix = tomcat.

修改Tomcat运行日志的等级

3.1  日志类型与级别

Tomcat 日志分?下面５类：

catalina 、 localhost 、 manager 、 admin 、 host-manager

每类日志的级别分为如下 7 种：

SEVERE (highest value) > WARNING > INFO > CONFIG > FINE > FINER > FINEST (lowest value)

3.2  日志级别的设定方法

修改 conf/logging.properties 中的内容，设定某类日志的级别

示例：

设置 catalina 日志的级别为： FINE

1catalina.org.apache.juli.FileHandler.level = FINE

禁用 catalina 日志的输出：

1catalina.org.apache.juli.FileHandler.level = OFF

输出 catalina 所有的日志消息均输出：

1catalina.org.apache.juli.FileHandler.level = ALL