请问：springMVC怎么使用log4j将数据写到数据库？

楼主，看下Log4j官网中关于JDBCAppender的描述是否可以满足你的需求。
链接：http://logging.apache.org/log4j/2.x/manual/appenders.html

private Logger logger = Logger.getLogger(LogUtil.class); 
     
    public void doLog(Date date,String level, String localtion,String message) { 
        MDC.put("log_date", date); 
        MDC.put("log_level", level); 
        MDC.put("location", localtion); 
        MDC.put("message", message); 
         
        logger.info(""); 
         
    } 
    public void main() { 
        LogUtil logUtil = new LogUtil(); 
        logUtil.doLog(new Date(),"testLevel","testLocation","testMessage"); 
    }