Spring boot logback日志系统集成

落日映苍穹つ 2021-10-14 01:24 432阅读 0赞

Spring boot默认使用的日志就是logback，我们就以logback为基础搭建公用的log系统，并将其发不成为第三方jar包给其它的系统使用。  
参考网址：  
[http://logback.qos.ch/manual/appenders.html\#ConsoleAppender][http_logback.qos.ch_manual_appenders.html_ConsoleAppender]  
[http://logback.qos.ch/manual/filters.html\#thresholdFilter][http_logback.qos.ch_manual_filters.html_thresholdFilter]

#### 1.配置日志xml文件logback-spring.xml ####

<?xml version="1.0" encoding="UTF-8"?>
    
    <configuration>
        
        <property name="log.path" value="./logs" />
        
        <property name="log.date" value="30" />
        <property name="pattern" value="[%d{yyyy-MM-dd HH:mm:ss.SSS}] [%-10.10thread] [%-5level] [%-36.36logger{36}:%-4.4line] : %msg%n"></property>
        <property name="patternMsg" value="%msg%n"></property>
        
        <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
            <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
                
                <level>INFO</level>
            </filter>
            <encoder>
                
                <pattern>${pattern}</pattern>
                
                <charset>utf8</charset>
            </encoder>
        </appender>
        
        <appender name="INFO" class="ch.qos.logback.core.rolling.RollingFileAppender">
            <filter class="ch.qos.logback.classic.filter.LevelFilter">
                
                <level>INFO</level>
                <onMatch>ACCEPT</onMatch>
                <onMismatch>DENY</onMismatch>
            </filter>
            <encoder>
                
                <pattern>${pattern}</pattern>
                
                <charset>utf8</charset>
            </encoder>
            
            <file>${log.path}/info/info.log</file>
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
                
                <fileNamePattern>${log.path}/info/info.%d{yyyy-MM-dd}.log</fileNamePattern>
                
                <maxHistory>${log.date}</maxHistory>
            </rollingPolicy>
        </appender>
        
        <appender name="TRACE" class="ch.qos.logback.core.rolling.RollingFileAppender">
            <filter class="com.yaomy.log.filter.EnhanceLevelFilter">
                
                <level>TRACE</level>
                <onMatch>ACCEPT</onMatch>
                <onMismatch>DENY</onMismatch>
            </filter>
            <encoder>
                
                <pattern>${patternMsg}</pattern>
                
                <charset>utf8</charset>
            </encoder>
            
            <file>${log.path}/user/user_action.log</file>
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
                
                <fileNamePattern>${log.path}/user/user_action.%d{yyyy-MM-dd}.log</fileNamePattern>
                
                <maxHistory>${log.date}</maxHistory>
            </rollingPolicy>
        </appender>
        
        <appender name="ERROR" class="ch.qos.logback.core.rolling.RollingFileAppender">
            <filter class="ch.qos.logback.classic.filter.LevelFilter">
                
                <level>ERROR</level>
                <onMatch>ACCEPT</onMatch>
                <onMismatch>DENY</onMismatch>
            </filter>
            <encoder>
                
                <pattern>${pattern}</pattern>
                
                <charset>utf8</charset>
            </encoder>
            
            <file>${log.path}/error/error.log</file>
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
                
                <fileNamePattern>${log.path}/error/error.%d{yyyy-MM-dd}.log</fileNamePattern>
                
                <maxHistory>${log.date}</maxHistory>
            </rollingPolicy>
        </appender>
        
        <appender name="WARN" class="ch.qos.logback.core.rolling.RollingFileAppender">
            <filter class="ch.qos.logback.classic.filter.LevelFilter">
                
                <level>WARN</level>
                <onMatch>ACCEPT</onMatch>
                <onMismatch>DENY</onMismatch>
            </filter>
            <encoder>
                
                <pattern>${pattern}</pattern>
                
                <charset>utf8</charset>
            </encoder>
            
            <file>${log.path}/warn/warn.log</file>
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
                
                <fileNamePattern>${log.path}/warn/warn.%d{yyyy-MM-dd}.log</fileNamePattern>
                
                <maxHistory>${log.date}</maxHistory>
            </rollingPolicy>
        </appender>
        
        <appender name="DEBUG" class="ch.qos.logback.core.rolling.RollingFileAppender">
            <filter class="ch.qos.logback.classic.filter.LevelFilter">
                
                <level>DEBUG</level>
                <onMatch>ACCEPT</onMatch>
                <onMismatch>DENY</onMismatch>
            </filter>
            <encoder>
                
                <pattern>${pattern}</pattern>
                
                <charset>utf8</charset>
            </encoder>
            
            <file>${log.path}/debug/debug.log</file>
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
                
                <fileNamePattern>${log.path}/debug/debug.%d{yyyy-MM-dd}.log</fileNamePattern>
                
                <maxHistory>7</maxHistory>
            </rollingPolicy>
        </appender>
        
        <root level="TRACE">
            <appender-ref ref="CONSOLE"/>
            <appender-ref ref="ERROR"/>
            <appender-ref ref="WARN"/>
            <appender-ref ref="INFO"/>
            <appender-ref ref="DEBUG"/>
            <appender-ref ref="TRACE"/>
        </root>
    </configuration>

> 上面的日志配置输出五种日志文件，并且日志文件每天自动滚动成一个文件，可以控制文件保存的有效期；其中输出控制台的日志文件使用的过滤器是阈值过滤器ThresholdFilter，  
> 其它的使用的是级别过滤器LevelFilter，有一种特殊的日志TRACE使用的是自定义的过滤器EnhanceLevelFilter，主要是用来生成用户自定义的JSON格式日志文件

#### 2.看下自定义过滤器EnhanceLevelFilter ####

package com.yaomy.log.filter;
    
    import ch.qos.logback.classic.Level;
    import ch.qos.logback.classic.filter.LevelFilter;
    import ch.qos.logback.classic.spi.ILoggingEvent;
    import ch.qos.logback.core.spi.FilterReply;
    
    public class EnhanceLevelFilter extends LevelFilter {
    
        Level level;
    
        @Override
        public FilterReply decide(ILoggingEvent event) {
            if (event.getMessage().startsWith("{")
                    && event.getMessage().endsWith("}")
                    && event.getLevel().equals(level)) {
                return FilterReply.ACCEPT;
            } else {
                return FilterReply.DENY;
            }
        }
        @Override
        public void setLevel(Level level) {
            this.level = level;
        }
        @Override
        public void start() {
            if (this.level != null) {
                super.start();
            }
        }
    }

> 自定义过滤器是LevelFilter的一个子类，是为了满足特殊需求定义的

#### 3.接下来看下我们封装的工具类 ####

package com.yaomy.log.utils;
    
    import com.fasterxml.jackson.core.JsonProcessingException;
    import com.fasterxml.jackson.databind.ObjectMapper;
    import com.yaomy.log.po.UserAction;
    import org.slf4j.LoggerFactory;
    
    /**
     * @Description: 日志工具类 日志级别总共有TARCE < DEBUG < INFO < WARN < ERROR < FATAL，且级别是逐渐提供，
     * 如果日志级别设置为INFO，则意味TRACE和DEBUG级别的日志都看不到。
     * @Version: 1.0
     */
    public class LoggerUtil {
    
        public static <T> void info(Class<T> clazz, String msg){
            LoggerFactory.getLogger(clazz).info(msg);
        }
    
        public static <T> void warn(Class<T> clazz, String msg){
            LoggerFactory.getLogger(clazz).warn(msg);
        }
    
        public static <T> void debug(Class<T> clazz, String msg){
            LoggerFactory.getLogger(clazz).debug(msg);
        }
    
        public static <T> void error(Class<T> clazz, String msg){
            LoggerFactory.getLogger(clazz).error(msg);
        }
    
        public static void user(UserAction userAction){
            try {
                ObjectMapper objectMapper = new ObjectMapper();
                LoggerFactory.getLogger(LoggerUtil.class).trace(objectMapper.writeValueAsString(userAction));
            } catch (JsonProcessingException e){
                error(LoggerUtil.class, e.toString());
                System.out.println("----------");
            }
        }
    
    }

#### 4.自定义的UserAction类 ####

package com.yaomy.log.po;
    
    
    import com.fasterxml.jackson.annotation.JsonAutoDetect;
    import com.fasterxml.jackson.annotation.JsonProperty;
    
    import java.io.Serializable;
    
    @JsonAutoDetect(fieldVisibility=JsonAutoDetect.Visibility.ANY, getterVisibility=JsonAutoDetect.Visibility.NONE)
    public class UserAction implements Serializable {
        //重命名
        @JsonProperty("NUMBER")
        private String number;
        @JsonProperty("USERNAME")
        private String username;
    
        public String getNumber() {
            return number;
        }
    
        public void setNumber(String number) {
            this.number = number;
        }
    
        public String getUsername() {
            return username;
        }
    
        public void setUsername(String username) {
            this.username = username;
        }
    }

#### 5.测试日志 ####

package com.yaomy.log;
    
    
    import com.yaomy.log.po.UserAction;
    import com.yaomy.log.utils.LoggerUtil;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    
    @SpringBootApplication
    public class LogBootStrap {
        public static void main(String[] args) {
            SpringApplication.run(LogBootStrap.class, args);
            LoggerUtil.info(LogBootStrap.class,"sfddsf-----------------");
            LoggerUtil.info(LogBootStrap.class,"{username:liming}");
            LoggerUtil.error(LogBootStrap.class,"-----------error------------");
            LoggerUtil.warn(LogBootStrap.class,"----------warn--------------");
            LoggerUtil.debug(LogBootStrap.class,"---------------debug-");
            UserAction userAction = new UserAction();
            userAction.setUsername("dsdf");
            userAction.setNumber("12");
            LoggerUtil.user(userAction);
        }
    }

> 日志配置好之后就可以单独的将其达成jar包给其它系统来使用，也可以给其它的module使用

GitHub源码：[https://github.com/mingyang66/spring-parent/tree/master/spring-boot-control-logback-service][https_github.com_mingyang66_spring-parent_tree_master_spring-boot-control-logback-service]

[http_logback.qos.ch_manual_appenders.html_ConsoleAppender]: http://logback.qos.ch/manual/appenders.html#ConsoleAppender
[http_logback.qos.ch_manual_filters.html_thresholdFilter]: http://logback.qos.ch/manual/filters.html#thresholdFilter
[https_github.com_mingyang66_spring-parent_tree_master_spring-boot-control-logback-service]: https://github.com/mingyang66/spring-parent/tree/master/spring-boot-control-logback-service