后端项目开发：集成日志

╰半夏微凉° 2024-03-24 21:02 18阅读 0赞

SpringBoot 默认选择的是slf4j做日志门面，logback做日志实现。由于log4j有性能问题，不建议使用。  
由于log4j2的表现性能更好，我们需要集成log4j2，同时排除旧的日志实现包。

<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>

添加log4j2.xml配置文件

<?xml version="1.0" encoding="UTF-8"?>
    
    <Configuration status="WARN" monitorInterval="600">
        <Properties>
            
            <Property name="LOG_HOME">D:\logs</Property>
        </Properties>
        <Appenders>
            
            <Console name="console_out_appender" target="SYSTEM_OUT">
                
                <ThresholdFilter level="warn" onMatch="DENY" onMismatch="ACCEPT"/>
                
                <PatternLayout pattern="%5p [%t] %d{yyyy-MM-dd HH:mm:ss} (%F:%L) %m%n"/>
            </Console>
            
            <Console name="console_err_appender" target="SYSTEM_ERR">
                
                <ThresholdFilter level="warn" onMatch="ACCEPT" onMismatch="DENY"/>
                
                <PatternLayout pattern="%5p [%t] %d{yyyy-MM-dd HH:mm:ss} (%F:%L) %m%n"/>
            </Console>
    
            
            
            <RollingRandomAccessFile name="trace_appender"
                                     immediateFlush="true" fileName="${LOG_HOME}/trace.log"
                                     filePattern="${LOG_HOME}/trace/trace - %d{yyyy-MM-dd HH_mm_ss}.log.gz">
                <PatternLayout>
                    <pattern>%5p [%t] %d{yyyy-MM-dd HH:mm:ss} (%F:%L) %m%n</pattern>
                </PatternLayout>
                <Policies>
    
                    
                    <SizeBasedTriggeringPolicy size="2MB"/>
    
                </Policies>
                <Filters>
                    
                    <ThresholdFilter level="debug" onMatch="DENY" onMismatch="NEUTRAL"/>
                    <ThresholdFilter level="trace" onMatch="ACCEPT" onMismatch="DENY"/>
                </Filters>
            </RollingRandomAccessFile>
    
            
            
            <RollingRandomAccessFile name="debug_appender"
                                     immediateFlush="true" fileName="${LOG_HOME}/debug.log"
                                     filePattern="${LOG_HOME}/debug/debug - %d{yyyy-MM-dd HH_mm_ss}.log.gz">
                <PatternLayout>
                    <pattern>%5p [%t] %d{yyyy-MM-dd HH:mm:ss} (%F:%L) %m%n</pattern>
                </PatternLayout>
                <Policies>
    
                    
                    <SizeBasedTriggeringPolicy size="2MB"/>
    
                    
                    
    
                </Policies>
                <Filters>
                    
                    <ThresholdFilter level="info" onMatch="DENY" onMismatch="NEUTRAL"/>
                    <ThresholdFilter level="debug" onMatch="ACCEPT" onMismatch="DENY"/>
                </Filters>
            </RollingRandomAccessFile>
    
            
            <RollingRandomAccessFile name="info_appender"
                                     immediateFlush="true" fileName="${LOG_HOME}/info.log"
                                     filePattern="${LOG_HOME}/info/info - %d{yyyy-MM-dd HH_mm_ss}.log.gz">
                <PatternLayout>
                    <pattern>%5p [%t] %d{yyyy-MM-dd HH:mm:ss} (%F:%L) %m%n</pattern>
                </PatternLayout>
                <Policies>
                    <SizeBasedTriggeringPolicy size="2MB"/>
                </Policies>
                <Filters>
                    <ThresholdFilter level="warn" onMatch="DENY" onMismatch="NEUTRAL"/>
                    <ThresholdFilter level="info" onMatch="ACCEPT" onMismatch="DENY"/>
                </Filters>
            </RollingRandomAccessFile>
    
            
            <RollingRandomAccessFile name="warn_appender"
                                     immediateFlush="true" fileName="${LOG_HOME}/warn.log"
                                     filePattern="${LOG_HOME}/warn/warn - %d{yyyy-MM-dd HH_mm_ss}.log.gz">
                <PatternLayout>
                    <pattern>%5p [%t] %d{yyyy-MM-dd HH:mm:ss} (%F:%L) %m%n</pattern>
                </PatternLayout>
                <Policies>
                    <SizeBasedTriggeringPolicy size="2MB"/>
                </Policies>
                <Filters>
                    <ThresholdFilter level="error" onMatch="DENY" onMismatch="NEUTRAL"/>
                    <ThresholdFilter level="warn" onMatch="ACCEPT" onMismatch="DENY"/>
                </Filters>
            </RollingRandomAccessFile>
    
            
            <RollingRandomAccessFile name="error_appender"
                                     immediateFlush="true" fileName="${LOG_HOME}/error.log"
                                     filePattern="${LOG_HOME}/error/error - %d{yyyy-MM-dd HH_mm_ss}.log.gz">
                <PatternLayout>
                    <pattern>%5p [%t] %d{yyyy-MM-dd HH:mm:ss} (%F:%L) %m%n</pattern>
                </PatternLayout>
                <Policies>
                    <SizeBasedTriggeringPolicy size="2MB"/>
                </Policies>
                <Filters>
                    <ThresholdFilter level="error" onMatch="ACCEPT" onMismatch="DENY"/>
                </Filters>
            </RollingRandomAccessFile>
        </Appenders>
    
        <Loggers>
            
            <root level="info">
                <appender-ref ref="console_out_appender"/>
                <appender-ref ref="console_err_appender"/>
                <appender-ref ref="trace_appender"/>
                <appender-ref ref="debug_appender"/>
                <appender-ref ref="info_appender"/>
                <appender-ref ref="warn_appender"/>
                <appender-ref ref="error_appender"/>
            </root>
    
            
            <logger name="org.springframework.core" level="info"/>
            <logger name="org.springframework.beans" level="info"/>
            <logger name="org.springframework.context" level="info"/>
            <logger name="org.springframework.web" level="info"/>
            <logger name="org.jboss.netty" level="warn"/>
            <logger name="org.apache.http" level="warn"/>
    
        </Loggers>
    
    </Configuration>