我有 log4j2.xml 文件：<Console name="Console" target="SYSTEM_OUT">   <PatternLayout            pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} %X{userId} %-5level %logger{36}: %msg%n" /></Console>并且有%X{userId}一部分允許我顯示來自 MDC（線程上下文）的內(nèi)容。我對 JDBC 有類似的配置：<JDBC name="sqlServer" tableName="dbo.application_log">        <ConnectionFactory            class="mbms.configuration.Log4j2ConnectionFactory"            method="getConnection" />        <Column name="eventDate" isEventTimestamp="true" />        <Column name="level" pattern="%level" />        <Column name="logger" pattern="%logger" />        <Column name="user" pattern="%X{userId}" />        <Column name="message" pattern="%message" />        <Column name="exception" pattern="%ex{full}" /></JDBC>而且它不起作用。當(dāng)我注釋掉用戶時(shí)，日志存儲(chǔ)在數(shù)據(jù)庫中，但是當(dāng)它存在時(shí)我得到異常：Caused by: java.sql.BatchUpdateException: Incorrect syntax near the keyword 'user'.at com.microsoft.sqlserver.jdbc.SQLServerPreparedStatement.executeBatch(SQLServerPreparedStatement.java:2065)at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeBatch(NewProxyPreparedStatement.java:2544)at org.apache.logging.log4j.core.appender.db.jdbc.JdbcDatabaseManager.commitAndClose(JdbcDatabaseManager.java:532)... 108 more你知道我如何使用%X{userId}MS SQL 數(shù)據(jù)庫存儲(chǔ)這些信息嗎？