org.apache.ibatis.builder.IncompleteElementException: Could not find parameter map cn.itcast.ssm.po.

HTTP Status 500 - Request processing failed; nested exception is org.apache.ibatis.builder.IncompleteElementException: Could not find parameter map cn.itcast.ssm.po.ItemsQueryVo

type Exception report

message Request processing failed; nested exception is org.apache.ibatis.builder.IncompleteElementException: Could not find parameter map cn.itcast.ssm.po.ItemsQueryVo

description The server encountered an internal error that prevented it from fulfilling this request.

exception

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.apache.ibatis.builder.IncompleteElementException: Could not find parameter map cn.itcast.ssm.po.ItemsQueryVo

org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:927)

org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:811)

javax.servlet.http.HttpServlet.service(HttpServlet.java:624)

org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:796)

javax.servlet.http.HttpServlet.service(HttpServlet.java:731)

root cause

org.apache.ibatis.builder.IncompleteElementException: Could not find parameter map cn.itcast.ssm.po.ItemsQueryVo

org.apache.ibatis.builder.MapperBuilderAssistant.setStatementParameterMap(MapperBuilderAssistant.java:319)

org.apache.ibatis.builder.MapperBuilderAssistant.addMappedStatement(MapperBuilderAssistant.java:283)

在网上查了好久，才发现这个原因。我把Mapper.xml中的parameterType写成了parameterMap,而mybaties中已经不再用这个属性了。