java.lang.IllegalArgumentException: No bean specified

今天使用Struts1.x + Hibernate3.2集成的时候出了个以下错误：No bean specified

不能保存外键！！！！找不到相对应得formbean！但是formbean中有对应得类！

EmployeeForm类

private Employee employee = new Employee();

public Employee getEmployee() {
return employee;
}


public void setEmployee(Employee employee) {
this.employee = employee;
}Employee.java

public class Employee implements java.io.Serializable {


// Fields


private Integer empno;
private Dept dept = new Dept(); //最后发现问题出在这里，此处没有实例化
private String username;
private String realname;
private String pass;
private Date createdate;
private Integer isdel;

//省略setter/getter方法

Hibernate: select dept0_.deptno as deptno0_, dept0_.dname as dname0_, dept0_.isdel as isdel0_ from FinancialDB.dbo.dept dept0_ where dept0_.isdel = 0

2011-11-28 22:52:57 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet action threw exception
java.lang.IllegalArgumentException: No bean specified
at org.apache.commons.beanutils.PropertyUtilsBean.getPropertyDescriptor(PropertyUtilsBean.java:751)
at org.apache.commons.beanutils.BeanUtilsBean.setProperty(BeanUtilsBean.java:937)
at org.apache.commons.beanutils.BeanUtilsBean.populate(BeanUtilsBean.java:811)
at org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:298)
at org.apache.struts.util.RequestUtils.populate(RequestUtils.java:493)
at org.apache.struts.action.RequestProcessor.processPopulate(RequestProcessor.java:816)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:203)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.xiaolong.filter.HibernateFilter.doFilter(HibernateFilter.java:32)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.xiaolong.filter.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:30)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)

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