谷粒学苑项目-第一章统一日志处理-1.9

Dear 丶 2023-10-07 22:46 12阅读 0赞

## 一、Springboot默认logback日志 ##

springboot内部默认使用Logback作为日志实现的框架。

### 1. 配置logback日志 ###

*  **第一步 删除application.yml中的日志配置**

包括logging包(如logging.level.root=INFO)需要删除,mybatis-plus的sql日志输出也需要删除，如(mybatis-plus.configuration.log-impl=org.apache.ibatis.logging.stdout.StdOutImpl)

*  **第二步 在类路径resources下创建配置文件logback-spring.xml**

<?xml version="1.0" encoding="UTF-8"?>
    <configuration  scan="true" scanPeriod="10 seconds">
        
        
        
        
        <contextName>logback</contextName>
        
        <property name="log.path" value="F:/guli_log/edu" />
        
        
        
        
        
        
        
        <property name="CONSOLE_LOG_PATTERN"
                  value="%yellow(%date{yyyy-MM-dd HH:mm:ss}) |%highlight(%-5level) |%blue(%thread) |%blue(%file:%line) |%green(%logger) |%cyan(%msg%n)"/>
        
        <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
            
            
            <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
                <level>INFO</level>
            </filter>
            <encoder>
                <Pattern>${CONSOLE_LOG_PATTERN}</Pattern>
                
                <charset>UTF-8</charset>
            </encoder>
        </appender>
        
        
        <appender name="INFO_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
            
            <file>${log.path}/log_info.log</file>
            
            <encoder>
                <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
                <charset>UTF-8</charset>
            </encoder>
            
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
                
                <fileNamePattern>${log.path}/info/log-info-%d{yyyy-MM-dd}.%i.log</fileNamePattern>
                <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                    <maxFileSize>100MB</maxFileSize>
                </timeBasedFileNamingAndTriggeringPolicy>
                
                <maxHistory>15</maxHistory>
            </rollingPolicy>
            
            <filter class="ch.qos.logback.classic.filter.LevelFilter">
                <level>INFO</level>
                <onMatch>ACCEPT</onMatch>
                <onMismatch>DENY</onMismatch>
            </filter>
        </appender>
        
        <appender name="WARN_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
            
            <file>${log.path}/log_warn.log</file>
            
            <encoder>
                <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
                <charset>UTF-8</charset> 
            </encoder>
            
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
                <fileNamePattern>${log.path}/warn/log-warn-%d{yyyy-MM-dd}.%i.log</fileNamePattern>
                <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                    <maxFileSize>100MB</maxFileSize>
                </timeBasedFileNamingAndTriggeringPolicy>
                
                <maxHistory>15</maxHistory>
            </rollingPolicy>
            
            <filter class="ch.qos.logback.classic.filter.LevelFilter">
                <level>warn</level>
                <onMatch>ACCEPT</onMatch>
                <onMismatch>DENY</onMismatch>
            </filter>
        </appender>
        
        <appender name="ERROR_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
            
            <file>${log.path}/log_error.log</file>
            
            <encoder>
                <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
                <charset>UTF-8</charset> 
            </encoder>
            
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
                <fileNamePattern>${log.path}/error/log-error-%d{yyyy-MM-dd}.%i.log</fileNamePattern>
                <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                    <maxFileSize>100MB</maxFileSize>
                </timeBasedFileNamingAndTriggeringPolicy>
                
                <maxHistory>15</maxHistory>
            </rollingPolicy>
            
            <filter class="ch.qos.logback.classic.filter.LevelFilter">
                <level>ERROR</level>
                <onMatch>ACCEPT</onMatch>
                <onMismatch>DENY</onMismatch>
            </filter>
        </appender>
        
        
            
            
            
            <root level="DEBUG">
                <appender-ref ref="CONSOLE" />
                <appender-ref ref="INFO_FILE" />
                <appender-ref ref="WARN_FILE" />
                <appender-ref ref="ERROR_FILE" />
            </root>
    
    </configuration>

### 2. 将错误日志输出到文件 ###

GlobalExceptionHandler.java 中类上添加注解lombok包的@Slf4j注解.

@Slf4j
    public class GlobalExceptionHandler {}

@Slf4j
    public class LogExample {}
       
    相当于:
    public class LogExample {
        private static final org.slf4j.Logger log = org.slf4j.LoggerFactory.getLogger(LogExample.class);}

异常输出语句:就可以使用log对象了。

> log.error(e.getMessage())