springboot+logback日志使用

一时失言乱红尘 2023-07-25 05:26 93阅读 0赞

项目的开发中，日志是必不可少的组件，所以也会相应的在项目中实现和构建我们所需要的日志框架。  
logback是Springboot推荐并且默认使用的日志系统。  
官方推荐使用的xml名字的格式为：logback-spring.xml  
在resource下创建logback-spring.xml文件

<?xml version="1.0" encoding="UTF-8"?>
    
    <configuration>
    
        
        <property name="LOG_PATH" value="C:/log/mybatis"/>
    
        
        <conversionRule conversionWord="clr" converterClass="org.springframework.boot.logging.logback.ColorConverter"/>
        <conversionRule conversionWord="wex" converterClass="org.springframework.boot.logging.logback.WhitespaceThrowableProxyConverter"/>
        <conversionRule conversionWord="wEx" converterClass="org.springframework.boot.logging.logback.ExtendedWhitespaceThrowableProxyConverter"/>
        
        <property name="CONSOLE_LOG_PATTERN" value="${CONSOLE_LOG_PATTERN:-%clr(%d{yyyy-MM-dd HH:mm:ss.SSS}){faint} %clr(${LOG_LEVEL_PATTERN:-%5p}) %clr(${PID:- }){magenta} %clr(---){faint} %clr([%15.15t]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n${LOG_EXCEPTION_CONVERSION_WORD:-%wEx}}"/>
    
        
        <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
            <encoder>
                <Pattern>${CONSOLE_LOG_PATTERN}</Pattern>
                
                <charset>UTF-8</charset>
            </encoder>
        </appender>
    
        
        <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
            
            <file>${LOG_PATH}/mybatis.log</file>
            <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
                
                <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}/mybatis-%d{yyyy-MM-dd}.%i.log</fileNamePattern>
                
                <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                    <maxFileSize>10MB</maxFileSize>
                </timeBasedFileNamingAndTriggeringPolicy>
                
                <maxHistory>30</maxHistory>
            </rollingPolicy>
        </appender>
    
        
        <logger name="org.springframework" level="INFO"/>
        <logger name="org.apache" level="INFO"/>
        <logger name="com.zaxxer.hikari" level="WARN"/>
    
        
        <root level="INFO">
            <appender-ref ref="CONSOLE"/>
            <appender-ref ref="FILE"/>
        </root>
    
        
        
        
    </configuration>

将此文件放到[SpringBoot Mybatis多数据源配置][SpringBoot Mybatis]这篇文章项目的resource目录下，开发环境可以在application.properties添加配置

logging.level.com.example.mybatis.mapper=debug

com.example.mybatis.mapper为你的dao层/mapper层路径  
TestService.java改变控制台输出方式，代码如下

package com.example.mybatis.service;
    
    import com.example.mybatis.entity.Test1;
    import com.example.mybatis.entity.Test2;
    import com.example.mybatis.mapper.test1.Test1Mapper;
    import com.example.mybatis.mapper.test2.Test2Mapper;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    
    import java.util.List;
    
    @Service
    public class TestService { 
        private static final Logger log = LoggerFactory.getLogger(TestService.class);
    
        @Autowired
        private Test1Mapper test1Mapper;
    
        @Autowired
        private Test2Mapper test2Mapper;
    
        public void getStudents() { 
            List<Test1> test1 = test1Mapper.getAll();
            List<Test2> test2 = test2Mapper.getAll();
    
            log.info("数据源DB1:" + test1);
            log.info("数据源DB2:" + test2);
        }
    }

然后启动项目访问http://localhost:8080/test  
![在这里插入图片描述][20200412224100599.png]  
可以看到控制台日志输出  
查看目录C:\\log\\mybatis也有文件日志。  
项目已上传至[项目源码地址点击此处查看][Link 1]

[SpringBoot Mybatis]: https://blog.csdn.net/qq_40548741/article/details/104362580
[20200412224100599.png]: /images/20230528/56302d7fdbc6451ca069a38fcf1e8de2.png
[Link 1]: https://gitee.com/hehedabiao/springboot-series.git