Hi, All:
Refer to the instruction in Showing in Showing Process Instance (List Record) Data in a Form.
I found user just need to change the id number in the url, then he can see all the content of the forms that was applied submited by other people.
For example :
http://localhost:8080/jw/web/userview/leaveApp/userview//applicationForm?id=21162_leaveApp_applyLeaveProcesshttp://localhost:8080/jw/web/userview/leaveApp/userview//applicationForm?id=21163_leaveApp_applyLeaveProcess
...