idea 配置log4j

旧城等待， 2022-12-22 13:30 273阅读 0赞

log4j配置还是挺简单的

## 1、先引入maven的依赖： 可以直接复制 ##

<dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>1.2.17</version>
    </dependency>
    
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>1.7.25</version>
    </dependency>
    
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>1.7.25</version>
      <scope>test</scope>
    </dependency>

## 2、然后在web.xml中配置去哪里找log4j的配置文件： ##

**也可以直接复制到web.xml中**  
注：我log4j的配置文件在WEB-INF下

<context-param>
      <param-name>log4jConfigLocation</param-name>
      <param-value>WEB-INF/log4j.properties</param-value>
    </context-param>
    <context-param>
      <param-name>log4jRefreshInterval</param-name>
      <param-value>3000</param-value>
    </context-param>
    <listener>
      <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
    </listener>

## 3、然后配置log4j的配置文件 ##

**不想配置的可以直接使用我的**  
*注：这个log4j的后缀是.properties*

### 设置###
    log4j.rootLogger = debug,stdout,D,E
    
    ### 输出信息到控制抬 ###
    log4j.appender.stdout = org.apache.log4j.ConsoleAppender
    log4j.appender.stdout.Target = System.out
    log4j.appender.stdout.layout = org.apache.log4j.PatternLayout
    log4j.appender.stdout.layout.ConversionPattern = [%-5p] %d{yyyy-MM-dd HH:mm:ss,SSS} method:%l%n%m%n
    
    ### 输出DEBUG 级别以上的日志到=D:/idea/log/banktansWeb.log ###
    log4j.appender.D = org.apache.log4j.DailyRollingFileAppender
    log4j.appender.D.File = D:/idea/log/banktansWeb.log
    log4j.appender.D.Append = true
    log4j.appender.D.Threshold = DEBUG 
    log4j.appender.D.layout = org.apache.log4j.PatternLayout
    log4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n
    
    ### 输出ERROR 级别以上的日志到=D:/idea/log/error.log ###
    log4j.appender.E = org.apache.log4j.DailyRollingFileAppender
    log4j.appender.E.File =D:/idea/log/error.log
    log4j.appender.E.Append = true
    log4j.appender.E.Threshold = ERROR 
    log4j.appender.E.layout = org.apache.log4j.PatternLayout
    log4j.appender.E.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n

**注：这个log4j的配置文件可以根据自己的需要配置，不是唯一的**