SpringMVC配置log4j

谁践踏了优雅 2022-06-11 09:44 156阅读 0赞

[log4j教程][log4j]    [http://www.yiibai.com/log4j/][log4j]

本教程工具

IDE为[IntelliJ IDEA][IntelliJ_IDEA] 2017.2

JDK环境为1.8

maven版本为maven3

Tomcat版本为8.5

### 一、添加log4j依赖 ###

<dependency>
    			<groupId>org.slf4j</groupId>
    			<artifactId>slf4j-api</artifactId>
    			<version>1.6.6</version>
    		</dependency>
    		<dependency>
    			<groupId>org.slf4j</groupId>
    			<artifactId>jcl-over-slf4j</artifactId>
    			<version>1.6.6</version>
    			<scope>runtime</scope>
    		</dependency>
    		<dependency>
    			<groupId>org.slf4j</groupId>
    			<artifactId>slf4j-log4j12</artifactId>
    			<version>1.6.6</version>
    			<scope>runtime</scope>
    		</dependency>
    		<dependency>
    			<groupId>log4j</groupId>
    			<artifactId>log4j</artifactId>
    			<version>1.2.14</version>
    		</dependency>

### 二、创建log4j.xml ###

在resource目录下创建log4j.xml，内容如下：

<?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE log4j:configuration PUBLIC "-//APACHE//DTD LOG4J 1.2//EN" "log4j.dtd">
    <log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
    
        
        <appender name="console" class="org.apache.log4j.ConsoleAppender">
            <param name="encoding" value="UTF-8"/>
            <param name="target" value="System.out"/>
            <layout class="org.apache.log4j.PatternLayout">
                <param name="ConversionPattern" value="%-5p %c{2} - %m%n"/>
            </layout>
        </appender>
    
        
        <appender name="DEFAULT-APPENDER" class="org.apache.log4j.DailyRollingFileAppender">
            <param name="File" value="${catalina.base}/logs/schedule.log"/>
            <param name="Append" value="true"/>
            <param name="encoding" value="UTF-8"/>
            <param name="DatePattern" value="'.'yyyy-MM-dd'.log'"/>
            <layout class="org.apache.log4j.PatternLayout">
                <param name="ConversionPattern" value="%d %-5p %c{2} - %m%n"/>
            </layout>
        </appender>
    
        
        <appender name="ERROR-APPENDER" class="org.apache.log4j.DailyRollingFileAppender">
            <param name="File" value="${catalina.base}/logs/common-error.log"/>
            <param name="Append" value="true"/>
            <param name="encoding" value="UTF-8"/>
            <param name="threshold" value="error"/>
            <param name="DatePattern" value="'.'yyyy-MM-dd'.log'"/>
            <layout class="org.apache.log4j.PatternLayout">
                <param name="ConversionPattern" value="%d %-5p %c{2} - %m%n"/>
            </layout>
        </appender>
    
        
        <appender name="COMPONENT-APPENDER"
                  class="org.apache.log4j.DailyRollingFileAppender">
            <param name="File" value="${catalina.base}/logs/logistics-component.log"/>
            <param name="Append" value="true"/>
            <param name="encoding" value="UTF-8"/>
            <param name="DatePattern" value="'.'yyyy-MM-dd'.log'"/>
            <layout class="org.apache.log4j.PatternLayout">
                <param name="ConversionPattern" value="%d %-5p %c{2} - %m%n"/>
            </layout>
        </appender>
    
        
        <logger name="LOGISTICS-COMPONENT">
            <level value="debug"/>
            <appender-ref ref="COMPONENT-APPENDER"/>
            <appender-ref ref="ERROR-APPENDER"/>
        </logger>
    
        
        <root>
            <level value="debug"></level>
            <appender-ref ref="DEFAULT-APPENDER"/>
            <appender-ref ref="ERROR-APPENDER"/>
        </root>
    </log4j:configuration>

### 三、修改web.xml ###

在web.xml文件的<web-app>节点下，添加如下信息：

<context-param>
            <param-name>log4jConfigLocation</param-name>
            <param-value>classpath:log4j.xml</param-value>
        </context-param>
        
        <listener>
            <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
        </listener>
    
        
        <context-param>
            <param-name>rootLevel</param-name>
            <param-value>DEBUG</param-value>
        </context-param>
    
        <context-param>
            <param-name>loggingLevel</param-name>
            <param-value>INFO</param-value>
        </context-param>

#### 注意点： ####

Log4j.xml指定错误日志输出的部分：

<param name="File" value="$\{catalina.base\}/logs/common-error.log"/>

Value不要指定工程的相对路径。一般是按上面的方式部署到tomcat目录下logs文件夹下。

[log4j]: http://www.yiibai.com/log4j/
[IntelliJ_IDEA]: http://www.baidu.com/link?url=CpXNb7QUvqqxzesT0eotVfCkILXMLl63-Q0UbHprAq7waJHvwX4tACntn68K4FZS