logback 配置文件解读

浅浅的花香味﹌ 2023-05-22 22:01 230阅读 0赞

>  *  Grep Console：[https://yuanyu.blog.csdn.net/article/details/104656085][https_yuanyu.blog.csdn.net_article_details_104656085] 
>  *  混乱的JAVA日志体系：[https://yuanyu.blog.csdn.net/article/details/105579356][https_yuanyu.blog.csdn.net_article_details_105579356]

>  *  官网：[http://logback.qos.ch/access.html][http_logback.qos.ch_access.html] 
>  *  pattern文档：[https://logback.qos.ch/manual/layouts.html][https_logback.qos.ch_manual_layouts.html]

--------------------

# 1 项目依赖  #

<dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>1.7.30</version>
    </dependency>
    
    
    <dependency>
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-classic</artifactId>
        <version>1.2.3</version>
        <scope>test</scope>
    </dependency>
    
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>1.18.12</version>
        <scope>provided</scope>
    </dependency>

@Slf4j
    public class LogbackTest {
        @Test
        public void testQuick() {
            log.error("error...");
            log.warn("wring...");
            log.info("info...");
            log.debug("debug...");
            log.trace("trace...");
        }
    
        @Test
        public void testSplit() {
            for (int i = 0; i < 100000; i++) {
                log.error("error");
                log.warn("wring");
                log.info("info");
                log.debug("debug");
                log.trace("trace");
            }
        }

--------------------

# 2 输出到控制台 #

> logback.xml

<?xml version="1.0" encoding="UTF-8"?>
    <configuration>
        
        <property name="pattern" value="[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} %c %M %L [%thread] %m%n"/>
        
        <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
            
            <target>System.err</target>
            
            <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
                <pattern>${pattern}</pattern>
            </encoder>
        </appender>
        
        <root level="ALL">
            <appender-ref ref="console"/>
        </root>
    </configuration>

<table> 
 <thead> 
  <tr> 
   <th>格式</th> 
   <th>&nbsp;</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>%-5level</td> 
   <td>日志级别（5个字符 不足左对齐）</td> 
  </tr> 
  <tr> 
   <td>%d{yyyy-MM-dd HH:mm:ss.SSS}</td> 
   <td>日期</td> 
  </tr> 
  <tr> 
   <td>%c</td> 
   <td>全限定类名</td> 
  </tr> 
  <tr> 
   <td>%M</td> 
   <td>method</td> 
  </tr> 
  <tr> 
   <td>%L</td> 
   <td>行号</td> 
  </tr> 
  <tr> 
   <td>%thread</td> 
   <td>线程名称</td> 
  </tr> 
  <tr> 
   <td>%m或者%msg</td> 
   <td>信息</td> 
  </tr> 
  <tr> 
   <td>%n</td> 
   <td>换行</td> 
  </tr> 
 </tbody> 
</table>

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwNzk0OTcz_size_16_color_FFFFFF_t_70][]

--------------------

# 2 输出到文件 #

<?xml version="1.0" encoding="UTF-8"?>
    <configuration>
        <property name="pattern" value="[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} %c %M %L [%thread] %m%n"/>
        
        <property name="log_dir" value="/logs"/>
        
        <appender name="file" class="ch.qos.logback.core.FileAppender">
            
            <file>${log_dir}/logback.log</file>
            
            <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
                <pattern>${pattern}</pattern>
            </encoder>
        </appender>
        
        <root level="ALL">
            <appender-ref ref="file"/>
        </root>
    </configuration>

![20200418135906352.png][]

<?xml version="1.0" encoding="UTF-8"?>
    <configuration>
        <property name="pattern" value="[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} %c %M %L [%thread] %m%n"/>
        <property name="log_dir" value="/logs"/>
        <appender name="file" class="ch.qos.logback.core.FileAppender">
            <file>${log_dir}/logback.log</file>
            <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
                <pattern>${pattern}</pattern>
            </encoder>
            
            <filter class="ch.qos.logback.classic.filter.LevelFilter">
                
                <level>WARN</level>
                
                <onMatch>ACCEPT</onMatch>
                
                <onMismatch>DENY</onMismatch>
            </filter>
        </appender>
        <root level="ALL">
            <appender-ref ref="file"/>
        </root>
    </configuration>

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwNzk0OTcz_size_16_color_FFFFFF_t_70 1][]

--------------------

# 3 输出格式为html #

<?xml version="1.0" encoding="UTF-8"?>
    <configuration>
        
        <property name="log_dir" value="/logs"/>
        
        <appender name="htmlFile" class="ch.qos.logback.core.FileAppender">
            
            <file>${log_dir}/logback.html</file>
            
            <encoder class="ch.qos.logback.core.encoder.LayoutWrappingEncoder">
                <layout class="ch.qos.logback.classic.html.HTMLLayout">
                    <pattern>%-5level%d{yyyy-MM-dd HH:mm:ss.SSS}%c%M%L%thread%m</pattern>
                </layout>
            </encoder>
        </appender>
        
        <root level="ALL">
            <appender-ref ref="htmlFile"/>
        </root>
    </configuration>

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwNzk0OTcz_size_16_color_FFFFFF_t_70 2][]

--------------------

# 4 输出日志进行拆分与压缩 #

<?xml version="1.0" encoding="UTF-8"?>
    <configuration>
        <property name="pattern" value="[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} %c %M %L [%thread] %m%n"/>
        <property name="log_dir" value="/logs"/>
        
        <appender name="rollFile" class="ch.qos.logback.core.rolling.RollingFileAppender">
            
            <file>${log_dir}/roll_logback.log</file>
            
            <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
                <pattern>${pattern}</pattern>
            </encoder>
            
            <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
                
                
                <fileNamePattern>${log_dir}/rolling.%d{yyyy-MM-dd}.log%i.gz</fileNamePattern>
                
                <maxFileSize>1MB</maxFileSize>
            </rollingPolicy>
        </appender>
        <root level="ALL">
            <appender-ref ref="rollFile"/>
        </root>
    </configuration>

![2020041814105351.png][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwNzk0OTcz_size_16_color_FFFFFF_t_70 3][]

--------------------

# 5 异步日志 #

<?xml version="1.0" encoding="UTF-8"?>
    <configuration>
        <property name="pattern" value="[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} %c %M %L [%thread] %m%n"/>
        <property name="log_dir" value="/logs"/>
        <appender name="file" class="ch.qos.logback.core.FileAppender">
            <file>${log_dir}/logback.log</file>
            <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
                <pattern>${pattern}</pattern>
            </encoder>
        </appender>
        
        <appender name="async" class="ch.qos.logback.classic.AsyncAppender">
            
            <appender-ref ref="file"/>
        </appender>
        <root level="ALL">
            <appender-ref ref="file"/>
        </root>
    </configuration>

//ch.qos.logback.core.AsyncAppenderBase
    public class AsyncAppenderBase<E> extends UnsynchronizedAppenderBase<E> implements AppenderAttachable<E> {
        AppenderAttachableImpl<E> aai = new AppenderAttachableImpl();
        //日志队列
    	BlockingQueue<E> blockingQueue;
    	public static final int DEFAULT_QUEUE_SIZE = 256;
        int queueSize = 256;
        int appenderCount = 0;
        static final int UNDEFINED = -1;
        int discardingThreshold = -1;
        boolean neverBlock = false;

--------------------

# 6 自定义looger对象 #

<?xml version="1.0" encoding="UTF-8"?>
    <configuration>
        <property name="pattern" value="[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} %c %M %L [%thread] %m%n"/>
        <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
            <target>System.err</target>
            <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
                <pattern>${pattern}</pattern>
            </encoder>
        </appender>
        
        <logger name="com.nobug" level="info" additivity="false">
            <appender-ref ref="console"/>
        </logger>
        <root level="ALL">
            <appender-ref ref="console"/>
        </root>
    </configuration>

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwNzk0OTcz_size_16_color_FFFFFF_t_70 4][]

--------------------

# 7  log4j配置文字转换为logback #

> [http://logback.qos.ch/translator/][http_logback.qos.ch_translator]

log4j.rootLogger = debug,stdout
    ### 输出信息到控制抬 ###
    log4j.appender.stdout = org.apache.log4j.ConsoleAppender
    log4j.appender.stdout.Target = System.out
    log4j.appender.stdout.layout = org.apache.log4j.PatternLayout
    log4j.appender.stdout.layout.ConversionPattern = log4j : [%-5p] %m%n

<?xml version="1.0" encoding="UTF-8"?>
    
    
    
    
    
    
    
    <configuration>
        <appender name="stdout" class="ch.qos.logback.core.ConsoleAppender">
            <Target>System.out</Target>
            <encoder>
                <pattern>log4j : [%-5p] %m%n</pattern>
            </encoder>
        </appender>
        <root level="debug">
            <appender-ref ref="stdout"/>
        </root>
    </configuration>

[https_yuanyu.blog.csdn.net_article_details_104656085]: https://yuanyu.blog.csdn.net/article/details/104656085
[https_yuanyu.blog.csdn.net_article_details_105579356]: https://yuanyu.blog.csdn.net/article/details/105579356
[http_logback.qos.ch_access.html]: http://logback.qos.ch/access.html
[https_logback.qos.ch_manual_layouts.html]: https://logback.qos.ch/manual/layouts.html
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwNzk0OTcz_size_16_color_FFFFFF_t_70]: /images/20230521/3243dbf0139646d6a6766a5fe9a91778.png
[20200418135906352.png]: /images/20230521/16dfad17181e41579405983a79fe7b79.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwNzk0OTcz_size_16_color_FFFFFF_t_70 1]: /images/20230521/4f4368311b7f45d3bdf5714e00f98337.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwNzk0OTcz_size_16_color_FFFFFF_t_70 2]: /images/20230521/4659c9e4ec9b4ec5846eab799cced2b1.png
[2020041814105351.png]: /images/20230521/c89487f9ff2649d59fa303494049616b.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwNzk0OTcz_size_16_color_FFFFFF_t_70 3]: /images/20230521/51860f0524954ae4850a21f3702ace55.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwNzk0OTcz_size_16_color_FFFFFF_t_70 4]: /images/20230521/75912b21a3a94f0ba54c1b5fb9e6edb1.png
[http_logback.qos.ch_translator]: http://logback.qos.ch/translator/