springboot 整合logback(有全套的日志配置文件)

logback介紹：基於Log4j基礎上大量改良，不能單獨使用，推薦配合日志框架SLF4J來使用，可以和springboot很好的整合，也是springboot默認推薦的。

1.在resources 目錄下 創建 logback-spring.xml（推薦使用這個名字）

<?xml version="1.0" encoding="UTF-8"?>
<configuration scan="true" scanPeriod="60 seconds" debug="false">
    <contextName>logback</contextName>
    <property name="log.path" value="D:\\JAVA_LOGS\\transferservice_Logs\\" />
    <!--輸出到控制台-->
    <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
        <!--此日志appender是為開發使用，只配置最底級別，控制台輸出的日志級別是大於或等於此級別的日志信息-->
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>debug</level>
        </filter>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %contextName [%thread] %-5level %logger{36} - %msg%n</pattern>
            <charset>utf-8</charset>
        </encoder>
    </appender>

    <!--輸出到debug-->
    <appender name="debug" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>app_log/log/logback-debug-%d{yyyy-MM-dd}.log</fileNamePattern>
        </rollingPolicy>
        <append>true</append>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %contextName [%thread] %-5level %logger{36} - %msg%n</pattern>
            <charset>utf-8</charset>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.LevelFilter"><!-- 只打印DEBUG日志 -->
            <level>DEBUG</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>
    <!--輸出到info-->
    <appender name="info" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>app_log/log/logback-info-%d{yyyy-MM-dd}.log</fileNamePattern>
        </rollingPolicy>
        <append>true</append>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %contextName [%thread] %-5level %logger{36} - %msg%n</pattern>
            <charset>utf-8</charset>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.LevelFilter"><!-- 只打印INFO日志 -->
            <level>INFO</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>

    <!--輸出到error-->
    <appender name="error" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>app_log/log/logback-error-%d{yyyy-MM-dd}.log</fileNamePattern>
        </rollingPolicy>
        <append>true</append>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %contextName [%thread] %-5level %logger{36} - %msg%n</pattern>
            <charset>utf-8</charset>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.LevelFilter"><!-- 只打印ERROR日志 -->
            <level>ERROR</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>

    <!--輸出到warn-->
    <appender name="warn" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>app_log/log/logback-warn-%d{yyyy-MM-dd}.log</fileNamePattern>
        </rollingPolicy>
        <append>true</append>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %contextName [%thread] %-5level %logger{36} - %msg%n</pattern>
            <charset>utf-8</charset>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.LevelFilter"><!-- 只打印WARN日志 -->
            <level>WARN</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>

<!--用戶統計-->
    <appender name="dataApp" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>app_log/log/logback-data-%d{yyyy-MM-dd}.log</fileNamePattern>
        </rollingPolicy>
        <append>true</append>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %contextName [%thread] %-5level %logger{36} - %msg%n</pattern>
            <charset>utf-8</charset>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.LevelFilter"><!-- 只打印INFO日志 -->
            <level>INFO</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>

    <!--用於統計數據 比如某個方法執行了多少次-->
    <logger name="dataLogger">
        <level value="INFO" />
        <appender-ref ref="dataApp" />
    </logger>

    <!--分別設置對應的日志輸出節點 -->
    <root level="info">
        <appender-ref ref="console" />
        <appender-ref ref="debug" />
        <appender-ref ref="info" />
        <appender-ref ref="error" />
        <appender-ref ref="warn" />
    </root>
</configuration>

2.在需要打日志的地方，類下面加上。

private Logger logger = LoggerFactory.getLogger(this.getClass());
//用於統計使用，一般項目小項目不用可忽略
private Logger dataLogger = LoggerFactory.getLogger("dataLogger");
在方法上里加：

//這個數據會保存到統計信息的日志文件中去。
dataLogger.info("module=video_order`api=save`user_id={}`video_id={}",videoOrderDto.getUserId(),videoOrderDto.getVideoId());
//正常的日志記錄
logger.info("module=video_order`api=save`user_id={}`video_id={}",videoOrderDto.getUserId(),videoOrderDto.getVideoId());

對於：logback-spring.xml 中的配置說明=》https://blog.csdn.net/haidage/article/details/6794540