Could not find parameter map java.lang.Long

启动Mybatis报错如下：

java.lang.RuntimeException: org.apache.ibatis.builder.IncompleteElementException: Could not find parameter map java.lang.Long
org.apache.ibatis.builder.IncompleteElementException: Could not find parameter map java.lang.Long
	at org.apache.ibatis.builder.MapperBuilderAssistant.setStatementParameterMap(MapperBuilderAssistant.java:319)
	at org.apache.ibatis.builder.MapperBuilderAssistant.addMappedStatement(MapperBuilderAssistant.java:283)
	at org.apache.ibatis.builder.xml.XMLStatementBuilder.parseStatementNode(XMLStatementBuilder.java:107)
	at org.apache.ibatis.session.Configuration.buildAllStatements(Configuration.java:698)
	at org.apache.ibatis.session.Configuration.hasStatement(Configuration.java:668)
	at org.apache.ibatis.session.Configuration.hasStatement(Configuration.java:663)

经发现，找到出错原因，是Mybatis配置文件语句有问题，原语句为：

    SELECT * FROM sys_floder WHERE comId=#{comId};

原因：java.lang.Long类型不能用parameterMap修饰，改为parameterType即可，故修改后的正确语句为：

    SELECT * FROM sys_floder WHERE comId=#{comId};