nested exception is org.springframework.

SEVERE: Servlet.service() for servlet [dispatcherServlet] in context with path [/neiquan-owner-web] threw exception [Request processing failed; nested exception is org.springframework.orm.hibernate5.HibernateSystemException: IllegalArgumentException occurred while calling setter for property [com.neiquan.owner.home.vo.DemandVO.projectNo (expected type = java.lang.String)]; target = [com.neiquan.owner.home.vo.DemandVO@58a108d1], property value = [1000002] setter of com.neiquan.owner.home.vo.DemandVO.projectNo; nested exception is IllegalArgumentException occurred while calling setter for property [com.neiquan.owner.home.vo.DemandVO.projectNo (expected type = java.lang.String)]; target = [com.neiquan.owner.home.vo.DemandVO@58a108d1], property value = [1000002]] with root cause
java.lang.IllegalArgumentException: argument type mismatch

向方法传递了一个不合法或不正确的参数

java.lang.IllegalArgumentException: argument type mismatch 类型出错。
http://blog.csdn.net/avinegar/article/details/8132375