搞定!
String userName = (request.getParameter("userName")==null? ("emptyUserName") : (request.getParameter("userName")));
String password =(request.getParameter("password")==null? ("emptyPassword") : (request.getParameter("password")));只问剩下的问题了
String userName = (request.getParameter("userName")==null? ("emptyUserName") : (request.getParameter("userName")));
String password =(request.getParameter("password")==null? ("emptyPassword") : (request.getParameter("password")));只问剩下的问题了
可以看看资料去