log4j 和log4j2配置差异

最新推荐文章于 2024-08-10 11:09:18 发布

原创最新推荐文章于 2024-08-10 11:09:18 发布 · 393 阅读

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文章标签：

#spring-mvc #spring #log4j #log4j2

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本文对比了Log4j与Log4j2的日志配置方式，包括代码和web.xml中的配置差异。Log4j2简化了命名空间的使用，并在web.xml中采用过滤器而非监听器。

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代码差异

log4j

ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
Resource resource = resolver.getResource("classpath:log4j.xml");
String path = resource.getURL().getPath();
DOMConfigurator.configure(log4jPath);

log4j2

ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
Resource resource = resolver.getResource("classpath:log4j2.xml");
String path = resource.getURL().getPath();
ConfigurationSource configurationSource = new ConfigurationSource(new FileInputStream(path));
Configurator.initialize(null, configurationSource);

配置差异

log4j2.xml 文件中不需要声明命名空间

特性

web.xml 配置差异

log4j

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

log4j2

<context-param>
    <param-name>log4jConfigLocation</param-name>
    <param-value>/WEB-INF/log4j.xml</param-value>
</context-param>
<filter>
       <filter-name>log4jServletFilter</filter-name>
       <filter-class>org.apache.logging.log4j.web.Log4jServletFilter</filter-class>
</filter>
<filter-mapping>
       <filter-name>log4jServletFilter</filter-name>
       <url-pattern>/*</url-pattern>
</filter-mapping>