1、继承UnsynchronizedAppenderBase

package com.xf.config;

import java.util.Map;

import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.util.StringUtils;

import com.alibaba.fastjson.JSONObject;

import ch.qos.logback.classic.spi.LoggingEvent;
import ch.qos.logback.core.UnsynchronizedAppenderBase;
import cn.hutool.extra.spring.SpringUtil;
import lombok.Data;

@Data
public class MongoDBAppender extends UnsynchronizedAppenderBase<LoggingEvent> {

    private MongoTemplate mongoTemplate;

    String appName;
    String collectionName;

    @Override
    protected void append(LoggingEvent e) {
        if (mongoTemplate == null)
            mongoTemplate = SpringUtil.getBean(MongoTemplate.class);
        JSONObject obj = new JSONObject();
        obj.put("appName", appName);
        obj.put("Level", e.getLevel().toString());
        obj.put("Message", e.getFormattedMessage());
        obj.put("TimeStamp", e.getTimeStamp());
        obj.put("Class", e.getCallerData()[0].toString());
        Map<String, String> map = e.getMDCPropertyMap();
        map.forEach((k, v) -> {
            obj.put(k, v);
        });
        if (StringUtils.isEmpty(collectionName))
            mongoTemplate.save(obj, "wjflog");
        else
            mongoTemplate.save(obj, collectionName);
    }
}

2、xml配置

    <appender name="MONGODB" class="com.xf.config.MongoDBAppender">
        <appName>odvapi</appName>
        <collectionName>mylog</collectionName>
    </appender>

3、mongdb配置

spring:
  data:
    mongodb:
      database: test
      port: 27017
      host: 127.0.0.1