ordersformcontroller.java

Struts数据库项目中的一个实例

package com.relationinfo.webapp.action;

import java.util.Locale;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.lang.StringUtils;
import com.relationinfo.model.Orders;
import com.relationinfo.service.Manager;
import org.springframework.validation.BindException;
import org.springframework.web.servlet.ModelAndView;

public class OrdersFormController extends BaseFormController {
    private Manager manager = null;

    public void setManager(Manager manager) {
        this.manager = manager;
    }

    protected Object formBackingObject(HttpServletRequest request)
    throws Exception {
        String orderid = request.getParameter("orderid");
        Orders orders = null;

        if (!StringUtils.isEmpty(orderid)) {
            orders = (Orders) manager.getObject(Orders.class, new String(orderid));
        } else {
            orders = new Orders();
        }

        return orders;
    }

    public ModelAndView onSubmit(HttpServletRequest request,
                                 HttpServletResponse response, Object command,
                                 BindException errors)
    throws Exception {
        if (log.isDebugEnabled()) {
            log.debug("entering 'onSubmit' method...");
        }

        Orders orders = (Orders) command;
        boolean isNew = (orders.getOrderid() == null);
        Locale locale = request.getLocale();

        if (request.getParameter("delete") != null) {
            manager.removeObject(Orders.class, orders.getOrderid());

            saveMessage(request, getText("orders.deleted", locale));
        } else {
            manager.saveObject(orders);

            String key = (isNew) ? "orders.added" : "orders.updated";
            saveMessage(request, getText(key, locale));

            if (!isNew) {
            	return new ModelAndView("redirect:editOrders.html", "orderid", orders.getOrderid());
            }
        }

        return new ModelAndView(getSuccessView());
    }
}