SpringBoot整合Log4j2

SpringBoot整合Log4j2

pom.xml修改

springboot默认是用logback的日志框架的，所以需要排除logback，不然会出现jar依赖冲突的报错。

<dependency>
    <groupId>org.springframework.bootgroupId>
    <artifactId>spring-boot-starter-webartifactId>
    
    <exclusions>
        <exclusion>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-loggingartifactId>
        exclusion>
    exclusions>
dependency>


<dependency>
    <groupId>org.springframework.bootgroupId>
    <artifactId>spring-boot-starter-log4j2artifactId>
dependency>

日志配置文件

如果自定义了文件名，需要在application.yml中配置

logging:
  config: xxxx.xml

默认名log4j2-spring.xml，就省下了在application.yml中配置

log4j是通过一个.properties的文件作为主配置文件的，而现在的log4j2则已经弃用了这种方式，采用的是.xml，.json或者.jsn这种方式来做，可能这也是技术发展的一个必然性，因为properties文件的可阅读性真的是有点差。

<configuration monitorInterval="10">
    

    
    <Properties>
        
        
        <property name="LOG_PATTERN" value="%date{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n" />
        
        <property name="FILE_PATH" value="更换为你的日志路径" />
        <property name="FILE_NAME" value="更换为你的项目名" />
    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>

测试使用

Java代码

package com.fff.controller;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.format.DateTimeFormatter;

@RestController
@RequestMapping("/test")
public class TestController {

    private static final Logger logger = LoggerFactory.getLogger(TestController.class);

    @RequestMapping(value = "/test", method = RequestMethod.GET)
    public String test(){
        logger.info(LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")) + "-接口被调用");
        return "111ds进行开发";
    }

}

输出内容：

2020-06-16 15:57:07.011  INFO 12296 --- [nio-8099-exec-2] com.faep.controller.TestController       : 2020-06-16 15:57:07-接口被调用