Spring 配置日志

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参考：http://www.cnblogs.com/hapjin/p/5520547.html

添加依赖

<!-- https://mvnrepository.com/artifact/log4j/log4j -->
<dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>1.2.17</version>
</dependency>

创建log4j.properties

log4j.rootLogger=DEBUG, Console,RollingFile, DailyRollingFile

#Console
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.Threshold=DEBUG
log4j.appender.Console.ImmediateFlush=true
log4j.appender.Console.Targer=System.out
log4j.appender.Console.layout=org.apache.log4j.PatternLayout
#log4j.appender.Console.layout.ConversionPattern=%d %-5p [%c{5}] - %m%n
log4j.appender.Console.layout.ConversionPattern= [%-5p] [%-25d{yyyy-MM-dd HH:mm:sss,SSS}] [%l] %n %m %n

#RollingFileAppender
#log4j.appender.RollingFile=org.apache.log4j.RollingFileAppender
#log4j.appender.RollingFile.Threshold=DEBUG
#log4j.appender.RollingFile.File=../logs/bim/bim1.log
#log4j.appender.RollingFile.MaxFileSize=10KB
#log4j.appender.RollingFile.Appender=true
#log4j.appender.RollingFile.layout=org.apache.log4j.PatternLayout
#log4j.appender.RollingFile.layout.ConversionPattern= [%-5p] [%-25d{yyyy-MM-dd HH:mm:sss,SSS}] [%l] %n %m %n

#DailyRollingFile
log4j.appender.DailyRollingFile=org.apache.log4j.DailyRollingFileAppender
log4j.appender.RollingFile.Threshold=INFO
log4j.appender.DailyRollingFile.File=../logs/bim/bim_
log4j.appender.DailyRollingFile.Appender=true
log4j.appender.DailyRollingFile.DatePattern=yyyy-MM-dd-a'.txt'
log4j.appender.DailyRollingFile.layout=org.apache.log4j.PatternLayout
log4j.appender.DailyRollingFile.layout.ConversionPattern=[%-5p] [%-25d{yyyy-MM-dd HH:mm:sss,SSS}] [%l] %n %m %n

配置Web.xml

<!-- 加载log4j的配置文件log4j.properties -->
    <context-param>
        <param-name>log4jConfigLocation</param-name>
        <param-value>classpath:log4j.properties</param-value>
    </context-param>

    <!-- 设定刷新日志配置文件的时间间隔，这里设置为10s -->
    <context-param>
        <param-name>log4jRefreshInterval</param-name>
        <param-value>10000</param-value>
    </context-param>

    <!-- 加载Spring框架中的log4j监听器Log4jConfigListener -->
   <listener>
        <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
    </listener>

    <!-- 为避免项目间冲突，定义唯一的 webAppRootKey -->
    <context-param>
        <param-name>webAppRootKey</param-name>
        <param-value>scheduleProject</param-value>
    </context-param>

①log4jConfigLocation 指定Spring从哪个目录下加载 log4j.properties 配置文件

②log4jRefreshInterval 当修改了配置文件时，不需要重启就能加载变化了的log4j.properties 配置文件

③webAppRootKey 项目的标识，一个窗口中可能部署了多个项目，用它进行区分。当配置 日志文件的输出目录时，可能会用到它

使用Logger

import org.apache.log4j.Logger;

class  Test{

private static Logger logger = Logger.getLogger(Test.class);
//....other code

logger.info("info ");
logger.error("error");
logger.warn("warn");

.......