e0306243c69b001b15bbdb9313669cc1

用jsf实现cd商店的程序

package com.tangjun.web.vo;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;

import javax.faces.model.DataModel;
import javax.faces.model.ListDataModel;

import com.tangjun.model.exception.MyException;
import com.tangjun.web.pojo.CD;
import javax.faces.context.FacesContext;

public class CDBean extends CDBaseBean
{
	private CD						cd		= new CD();

	private DataModel				cds		= new ListDataModel();

	private StoreManageDelegate		store	= new StoreManageDelegate();

	private List<Map<String,CD>>	items	= new ArrayList<Map<String,CD>>();

	private Map<String,CD>			itemMap	= new TreeMap<String,CD>();

	public Collection getItems()
	{
		return items;
	}

	public DataModel getCds() throws MyException
	{
		//store.findTitleAsc()
		//this.getCdService().browse()
		cds.setWrappedData(store.findTitleAsc());
		return cds;
	}

	public void setCds(DataModel cds)
	{
		this.cds = cds;
	}

	/**
	 * 为客户保存购物车信息
	 * @return
	 */
	public String clientAdd()
	{
		FacesContext context = FacesContext.getCurrentInstance();
		Map map = context.getExternalContext().getRequestParameterMap();

		String specialTitle = (String)map.get("specialTitle");
		String artist = (String)map.get("artist");
		float price = Float.parseFloat((String)map.get("price"));
		CD cd = new CD(specialTitle,artist,price);
		itemMap.put(cd.getSpecialTitle(),cd);
		items.add(itemMap);
		return "add";
	}

	public String remove()
	{
		FacesContext context = FacesContext.getCurrentInstance();
		Map map = context.getExternalContext().getRequestParameterMap();

		String specialTitle = (String)map.get("specialTitle");
		CD cd = (CD)itemMap.get(specialTitle);
		itemMap.remove(cd.getSpecialTitle());
		items.remove(itemMap);
		return "remove";
	}

	/**
	 * 以下代码是页面操作
	 */
	public String logoutAction()
	{
		this.setCds(null);
		return "Logout";
	}

	public void add()
	{
		store.addCD((CD)this.cds.getRowData());
	}

	public void delete()
	{
		store.delCD(((CD)this.cds.getRowData()).getId());
	}

	public void update()
	{
		store.updateCD((CD)this.cds.getRowData());
	}

	public void browse()
	{
		cds.setWrappedData(store.findTitleAsc());
	}

	/**
	 * 以下代码为排序代码
	 * @return String
	 */
	public String sortTitleAsc()
	{
		cds.setWrappedData(store.findTitleAsc());
		return "asc";
	}

	public String sortTitleDesc()
	{
		cds.setWrappedData(store.findTitleDesc());
		return "asc";
	}

	public String sortArtistAsc()
	{
		cds.setWrappedData(store.findArtistAsc());
		return "asc";
	}

	public String sortArtistDesc()
	{
		cds.setWrappedData(store.findArtistDesc());
		return "asc";
	}

	public CD getCd()
	{
		return cd;
	}

	public void setCd(CD cd)
	{
		this.cd = cd;
	}
}