SSH三大架構經常發生的異常以及解決方案

1. java.lang.IllegalArgumentException: attempt to create saveOrUpdate event with null entity異常

2. @Namespace("/")
   @SuppressWarnings("serial")
   @Controller("regeditAction")
   @Scope("prototype")
   public class RegeditAction extends ActionSupport {
   @Resource
   private Regedit regedit;      

3. public Regedit getRegedit(){
   
     return regedit;