springboot log4j2 logback slf4j

曾经终败给现在 2023-03-14 10:41 13阅读 0赞

## logback介绍 ##

[https://juejin.im/post/5b51f85c5188251af91a7525][https_juejin.im_post_5b51f85c5188251af91a7525]

## log4j2的使用 ##

1.排除默认的logback

<dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-logging</artifactId>
                <exclusions>
                    <exclusion>
                        <groupId>*</groupId>
                        <artifactId>*</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>
            
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-log4j2</artifactId>
            </dependency>

2.引入log4j2配置文件

logging.config=classpath:log4j2.xml

3.log4j2.xml文件配置

<?xml version="1.0" encoding="UTF-8"?>
    
    
    <configuration monitorInterval="5">
        
    
        
        <Properties>
            
            
            <property name="LOG_PATTERN" value="%date{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n" />
            
            <property name="FILE_PATH" value="E:\mylog" />
            <property name="FILE_NAME" value="sky" />
        </Properties>
    
        <appenders>
    
            <console name="Console" target="SYSTEM_OUT">
                
                <PatternLayout pattern="${LOG_PATTERN}"/>
                
                <ThresholdFilter level="info" onMatch="ACCEPT" onMismatch="DENY"/>
            </console>
    
            
            <File name="Filelog" fileName="${FILE_PATH}/test.log" append="false">
                <PatternLayout pattern="${LOG_PATTERN}"/>
            </File>
    
            
            <RollingFile name="RollingFileInfo" fileName="${FILE_PATH}/info.log" filePattern="${FILE_PATH}/${FILE_NAME}-INFO-%d{yyyy-MM-dd}_%i.log.gz">
                
                <ThresholdFilter level="info" onMatch="ACCEPT" onMismatch="DENY"/>
                <PatternLayout pattern="${LOG_PATTERN}"/>
                <Policies>
                    
                    <TimeBasedTriggeringPolicy interval="1"/>
                    <SizeBasedTriggeringPolicy size="10MB"/>
                </Policies>
                
                <DefaultRolloverStrategy max="15"/>
            </RollingFile>
    
            
            <RollingFile name="RollingFileWarn" fileName="${FILE_PATH}/warn.log" filePattern="${FILE_PATH}/${FILE_NAME}-WARN-%d{yyyy-MM-dd}_%i.log.gz">
                
                <ThresholdFilter level="warn" onMatch="ACCEPT" onMismatch="DENY"/>
                <PatternLayout pattern="${LOG_PATTERN}"/>
                <Policies>
                    
                    <TimeBasedTriggeringPolicy interval="1"/>
                    <SizeBasedTriggeringPolicy size="10MB"/>
                </Policies>
                
                <DefaultRolloverStrategy max="15"/>
            </RollingFile>
    
            
            <RollingFile name="RollingFileError" fileName="${FILE_PATH}/error.log" filePattern="${FILE_PATH}/${FILE_NAME}-ERROR-%d{yyyy-MM-dd}_%i.log.gz">
                
                <ThresholdFilter level="error" onMatch="ACCEPT" onMismatch="DENY"/>
                <PatternLayout pattern="${LOG_PATTERN}"/>
                <Policies>
                    
                    <TimeBasedTriggeringPolicy interval="1"/>
                    <SizeBasedTriggeringPolicy size="10MB"/>
                </Policies>
                
                <DefaultRolloverStrategy max="15"/>
            </RollingFile>
    
        </appenders>
    
        
        
        <loggers>
    
            
            <logger name="org.mybatis" level="info" additivity="false">
                <AppenderRef ref="Console"/>
            </logger>
            
            
            <Logger name="org.springframework" level="info" additivity="false">
                <AppenderRef ref="Console"/>
            </Logger>
    
            <root level="info">
                <appender-ref ref="Console"/>
                <appender-ref ref="Filelog"/>
                <appender-ref ref="RollingFileInfo"/>
                <appender-ref ref="RollingFileWarn"/>
                <appender-ref ref="RollingFileError"/>
            </root>
        </loggers>
    
    </configuration>

4.使用

import lombok.extern.log4j.Log4j2;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    @RestController
    @Log4j2
    public class TestController {
    
        @GetMapping("index")
        public String index(){
            System.out.println("====================================================");
            log.trace("日志输出  trace");
            log.debug("日志输出  debug");
            log.info("日志输出  info");
            log.warn("日志输出  warn");
            log.error("日志输出  error");
            System.out.println("====================================================");
            return "ok";
        }
    }

## Slf4j ##

slfg4j是日志框架的抽象层，实现类有logback，log4j2，jcl…，使用sfl4j的时候配置文件按实现类的配置文件配置即可

import lombok.extern.slf4j.Slf4j;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    @RestController
    @Slf4j
    public class TestController {
    
        @GetMapping("index")
        public String index(){
            System.out.println("====================================================");
            log.trace("日志输出  trace");
            log.debug("日志输出  debug");
            log.info("日志输出  info");
            log.warn("日志输出  warn");
            log.error("日志输出  error");
            System.out.println("====================================================");
            return "ok";
        }
    }

[https_juejin.im_post_5b51f85c5188251af91a7525]: https://juejin.im/post/5b51f85c5188251af91a7525