1. 在ActionForm中使用:
LoginForm.java
public class LoginForm extends ActionForm{
private String name;
private String password;
/*setter and getter*/
/*validate*/
public ActionErrors validate(ActionMapping mapping, HttpServletRequest request){
ActionMessages errors = new ActionMessages();
if(this.name == null || this.name.length() < 1){
ActionMessage aError = new ActionMessage("error.required");
errors.add("userName", aError);
}
return errors;
}
}
2. 在Action中使用：
LoginAction.java
public class LoginAction extends Action{
public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response){
LoginForm loginForm = (LoginForm)form;
String name = loginForm.getName();
if("camper".equals(name)){
ActionMessage errors = new ActionMessages();
ActionMessage aerror = new ActionError("error.invalid.userName");
errors.add(aerror);
this.addError(errors);
return mapping.getInputForward();
}
return mapping.findMapping("result");
}
}
