一.   log4j.properties

1. log4j.properties放在spring工程的src/main/rescours目录下无法读取。

   测试后发现需要把log4j.properties文件放在src/main/webapp/WEB-INF目录下，

2. web.xml配置

<context-param>
    <param-name>log4jConfigLocation</param-name>
    <param-value>/WEB-INF/log4j.properties</param-value>
</context-param>

<listener>
    <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>

3. log4j.properties中日志文件路径

${webapp.root}/....  

4. 代码

private static final Log log= LogFactory.getLog("logname");

二. log4j.xml

1. log4j.xml放在spring工程的src/main/rescours目录下可以读取。

2. web.xml配置

<context-param>
    <param-name>log4jConfigLocation</param-name>
    <param-value>classpath:log4j.xml</param-value>
</context-param>

<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>

<listener>
    <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>

3. log4j.properties中日志文件路径

${webapp.root}/....  

4. 代码

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

private static final Logger log= LoggerFactory.getLogger("logname");

spring log4j.properties 没有日志的问题