Spring MVC打印出mysql语句

WEB-INF目录下的logback.xml的configuration节点新增：

	<!-- 打印SQL debug -->
	<logger name="java.sql.Connection">
		<level value="debug" />
		<appender-ref ref="sqlappender" />
	</logger>
	
	<logger name="java.sql.Statement">
		<level value="debug" />
		<appender-ref ref="sqlappender" />
	</logger>
	
	<logger name="java.sql.CallableStatement">
		<level value="debug" />
		<appender-ref ref="sqlappender" />
	</logger>
	
	<logger name="java.sql.PreparedStatement">
		<level value="debug" />
		<appender-ref ref="sqlappender" />
	</logger>