在日志中显示主机IP

package com.demo.conf;
import ch.qos.logback.classic.pattern.ClassicConverter;
import ch.qos.logback.classic.spi.ILoggingEvent;
import java.net.InetAddress;
import java.net.UnknownHostException;
/**
 * 配置日志中显示IP
 */
public class IPLogConfig extends ClassicConverter {
    @Override
    public String convert(ILoggingEvent event) {
        try {
            return InetAddress.getLocalHost().getHostAddress();
        } catch (UnknownHostException e) {
            e.printStackTrace();
        }
        return null;
    }
}

<!--配置规则类的位置-->
<conversionRule conversionWord="ip" converterClass="com.demo.conf.IPLogConfig" />
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%white(%d{yyyy-MM-dd HH:mm:ss}) %highlight(%lsn) %white(%ip) %green([%thread]) %highlight(%-5level) %boldMagenta(%logger{10}) - %cyan(%msg%n)</pattern>
            <charset>utf8</charset>
        </encoder>
    </appender>