priceincreaseformcontroller.java

朱冰-springmvc

package web;

import org.springframework.web.servlet.mvc.SimpleFormController;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.view.RedirectView;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;

import java.util.Map;
import java.util.HashMap;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import bus.ProductManager;
import bus.PriceIncrease;

public class PriceIncreaseFormController extends SimpleFormController {

    /** Logger for this class and subclasses */
    protected final Log logger = LogFactory.getLog(getClass());

    private ProductManager prodMan;

    public ModelAndView onSubmit(Object command)
            throws ServletException {

        int increase = ((PriceIncrease) command).getPercentage();
        logger.info("Increasing prices by " + increase + "%.");

        prodMan.increasePrice(increase);

        String now = (new java.util.Date()).toString();
        logger.info("returning from PriceIncreaseForm view to " + getSuccessView() +
                    " with " + now);

        Map myModel = new HashMap();
        myModel.put("now", now);
        myModel.put("products", getProductManager().getProducts());

        return new ModelAndView(new RedirectView(getSuccessView()));
    }

    protected Object formBackingObject(HttpServletRequest request) throws ServletException {

        PriceIncrease priceIncrease = new PriceIncrease();
        priceIncrease.setPercentage(20);

        return priceIncrease;

    }

    public void setProductManager(ProductManager pm) {
        prodMan = pm;
    }

    public ProductManager getProductManager() {
        return prodMan;
    }

}