adduseraction.java

基于struts框架编写的在线考试系统

package examonline.struts.actions.admin;

import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionForm;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForward;
import examonline.struts.forms.UserForm;
import org.apache.struts.action.Action;
import examonline.beans.User;
import examonline.service.ManagerFactory;
import examonline.service.UserDAO;
import examonline.exceptions.*;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionError;
import examonline.utils.Constants;

public class AddUserAction
    extends BaseAction {
  public ActionForward executeTask(ActionMapping actionMapping,
                               ActionForm actionForm,
                               HttpServletRequest servletRequest,
                               HttpServletResponse servletResponse) {
    ActionErrors errors = new ActionErrors();
    UserForm userForm = (UserForm) actionForm;
    User user = userForm.getUser();
    UserDAO um = ManagerFactory.getUserManager();
    try {
      int result = um.saveUser(user);
      if(result == 0)
        errors.add(ActionErrors.GLOBAL_ERROR,new ActionError("error.user.save"));
    }
    catch (UserAreadyExistException ex) {
      errors.add(ActionErrors.GLOBAL_ERROR,
                 new ActionError("error.user.alreadyexist", user.getId()));
    }
    if(!errors.isEmpty())
    {
      this.saveErrors(servletRequest, errors);

    }
    else
      servletRequest.removeAttribute("userForm");
     return actionMapping.getInputForward();
  }
}