Log4j2使用案例

<dependencies>
  <dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-api</artifactId>
    <version>2.13.3</version>
  </dependency>
  <dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-core</artifactId>
    <version>2.13.3</version>
  </dependency>
</dependencies>

<?xml version="1.0" encoding="UTF-8"?>
<Configuration strict="true" status="info" monitorInterval="30">
    <Properties>
        <property name="LOG_HOME">./</property>
        <Property name="ERROR_LOG_FILE_NAME">server-error</Property>
        <Property name="ERROR_LOG_FILE_ROTATE_SIZE">100 MB</Property>
        <Property name="ERROR_LOG_FILE_MAX">20</Property>
        <Property name="COMMON_LOG_FILE_NAME">server-common</Property>
        <Property name="COMMON_LOG_FILE_ROTATE_SIZE">100 MB</Property>
        <Property name="COMMON_LOG_FILE_MAX">20</Property>
        <Property name="CONSOLE_PATTERLAYOUT">%d{yyyy-MM-dd HH:mm:ss} %highlight{%-5p %t %c{1} %L} - %m%n</Property>
        <Property name="PATTERLAYOUT">%d{yyyy-MM-dd HH:mm:ss} %-5p %t %c{1} %L - %m%n</Property>
    </Properties>
    <Appenders>
        <Appender name="console" type="console">
            <Layout type="PatternLayout" pattern="${CONSOLE_PATTERLAYOUT}" />
            <Filters>
                <Filter type="ThresholdFilter" level="info" onMatch="ACCEPT" onMismatch="DENY" />
            </Filters>
        </Appender>

        <Appender name="errorlog"
                  type="RollingRandomAccessFile"
                  fileName="${LOG_HOME}/${ERROR_LOG_FILE_NAME}.log"
                  filePattern="${LOG_HOME}/$${date:yyyy-MM}/${ERROR_LOG_FILE_NAME}-%d{yyyy-MM-dd HH-mm}-%i.log"
                  append="true">
            <Layout type="PatternLayout" pattern="${PATTERLAYOUT}" />
            <Filters>
                <Filter type="ThresholdFilter" level="error" onMatch="ACCEPT" onMismatch="DENY" />
            </Filters>
            <Policies>
                <SizeBasedTriggeringPolicy size="${ERROR_LOG_FILE_ROTATE_SIZE}" />
            </Policies>
            <DefaultRolloverStrategy max="${ERROR_LOG_FILE_MAX}" fileIndex="min" />
        </Appender>

        <Appender name="commonlog"
                  type="RollingRandomAccessFile"
                  fileName="${LOG_HOME}/${COMMON_LOG_FILE_NAME}.log"
                  filePattern="${LOG_HOME}/$${date:yyyy-MM}/${COMMON_LOG_FILE_NAME}-%d{yyyy-MM-dd HH-mm}-%i.log"
                  append="true">
            <Layout type="PatternLayout" pattern="${PATTERLAYOUT}" />
            <Filters>
                <Filter type="ThresholdFilter" level="info" onMatch="ACCEPT" onMismatch="DENY" />
            </Filters>
            <Policies>
                <SizeBasedTriggeringPolicy size="${COMMON_LOG_FILE_ROTATE_SIZE}" />
            </Policies>
            <DefaultRolloverStrategy max="${COMMON_LOG_FILE_MAX}" fileIndex="min" />
        </Appender>

    </Appenders>

    <Loggers>
        <Root level="debug">
            <AppenderRef ref="console" />
            <AppenderRef ref="errorlog" />
            <AppenderRef ref="commonlog" />
        </Root>
    </Loggers>
</Configuration>