DBAppender未将日志写入NIFI中的数据库

Question

下面是我添加到logback.xml的配置。我还执行了Logback源代码附带的db sql服务器脚本。

<appender name="DB" class="ch.qos.logback.classic.db.DBAppender">
<connectionSource
  class="ch.qos.logback.core.db.DataSourceConnectionSource">
  <dataSource
    class="com.mchange.v2.c3p0.ComboPooledDataSource">
    <driverClass>com.microsoft.sqlserver.jdbc.SQLServerDriver</driverClass>
        <jdbcUrl>{jdbc:sqlserver:{link db}:{port};{database}            
        </jdbcUrl>
    <user>{username}</user>
    <password>{password}</password>
  </dataSource>
 </connectionSource>
 </appender>
<logger name="org.apache.nifi.processors" level="Error">
 <appender-ref ref="DB" />`enter code here`
 <appender-ref ref="ErrorLogs" />
</logger>