SpringBoot使用Log4j的知识点整理

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

public class TestSlf4j {
 //Logger和LoggerFactory导入的是org.slf4j包
 private final static Logger logger = LoggerFactory.getLogger(TestSlf4j.class);
}

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
 
public class TestLog4j {
 // Logger和LogManager导入的是org.apache.logging包
 private static final Logger LOG = LogManager.getLogger(TestLog4j.class); 
}

<dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-web</artifactId>
 <exclusions>
  <exclusion>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-logging</artifactId>
  </exclusion>
 </exclusions>
</dependency>

<dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-log4j2</artifactId>
</dependency>

<dependency>
 <groupId>org.springframework.boot</groupId>
 <artifactId>spring-boot-starter-log4j</artifactId>
 <version>1.3.8.RELEASE</version>
</dependency>

<context-param> 
 <param-name>log4jConfiguration</param-name> 
 <param-value>/WEB-INF/conf/log4j2.xml</param-value> 
</context-param> 
 
<listener> 
 <listener-class>org.apache.logging.log4j.web.Log4jServletContextListener</listener-class> 
</listener>

public static void main(String[] args) throws IOException { 
 File file = new File("D:/log4j2.xml"); 
 BufferedInputStream in = new BufferedInputStream(new FileInputStream(file)); 
 final ConfigurationSource source = new ConfigurationSource(in); 
 Configurator.initialize(null, source); 
 
 Logger logger = LogManager.getLogger("myLogger"); 
}