At last,I finished UML model of fileSharing system with ArgoUML.Struts+Hibernate were taken.After finishing this model,I felt there are some diagrams seemed redundant.And,maybe,this software engineering process isn't proper for a framework and component based software.This will need friends to evaluate this model.
At this point,ArgoUML there are only basic UML function(the sequence diagram was imported in not long ago and doesn't work well.)But,I think learning UML with it is enough.And,according to the status of it,I think it will grow to a useful UML tool at last.