ActionErrors是ActionMessages的子类你可以这样写:
ActionMessages errors=new ActionMessages();
errors.add("userName",new ActionMessage("error.userName"))
ActionMessages errors=new ActionMessages();
errors.add("userName",new ActionMessage("error.userName"))
errors.add("key", new ActionMessage("errors: name must be input<br>",
false));
ActionErrors errors = new ActionErrors();
errors.add("userName",new ActionError("error.userName"))