ibatis 查询异常 Parameter index out of range

<select id="qryUser" resultClass="java.util.HashMap"  parameterClass="java.util.HashMap" >
	SELECT userId  FROM sys_user WHERE 1=1
		<isNotEmpty property="userId">
			AND userId = "#userId#"	
		</isNotEmpty>
	
</select>

以上语句报错了

SqlMapClient operation; SQL [];   \n

--- The error occurred while applying a parameter map.  \n

--- Check the roleManagerSqlMap.qryUserAuthorityIds-InlineParameterMap.  \n

--- Check the parameter mapping for the 'userId' property.  \n

--- Cause: java.sql.SQLException: Parameter index out of range (1 > number of parameters, which is 0).; nested exception is com.ibatis.common.jdbc.exception.NestedSQLException:   \n

--- The error occurred while applying a parameter map.  \n

--- Check the roleManagerSqlMap.qryUserAuthorityIds-InlineParameterMap.  \n

--- Check the parameter mapping for the 'userId' property.  \n

--- Cause: java.sql.SQLException: Parameter index out of range (1 > number of parameters, which is 0).

查了半天，原来是因为

<isNotEmpty property="userId">
			AND userId = "#userId#"	
		</isNotEmpty>

这个#userId# 外面多了 双引号， 把双引号去掉好了