f06a2496d59b001b10338a07bc32b2be

用jsf实现cd商店的程序

package com.tangjun.web.vo;

import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
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;

import org.apache.commons.beanutils.BeanUtils;

public class CDBean extends CDBaseBean
{
	private DataModel	cds				= new ListDataModel();
	private static List	temp;
	// private List<Map<String,CD>> items = new ArrayList<Map<String,CD>>();
	// private Map<String,CD> itemMap = new TreeMap<String,CD>();
	// private CD cd = new CD();
	
	private String		sortByProperty	= "specialTitle";

	public DataModel getCds() throws MyException
	{
		if(temp==null)
		{
			temp = this.getCdService().browse();
			this.sortTitleAsc();
		}
		return cds;
	}

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

	/**
	 * 以下代码是CD操作
	 */
	public String logoutAction()
	{
		this.setCds(null);
		return "Logout";
	}
	
	//添加CD
	public void add(CD cd)
	{
		try
		{
			this.getCdService().add(cd);
		}
		catch(MyException e)
		{
			e.printStackTrace();
		}
	}

	public void update(CD cd)
	{
		try
		{
			this.getCdService().update(cd);
		}
		catch(MyException e)
		{
			e.printStackTrace();
		}
	}

	public void del(Integer id)
	{
		try
		{
			this.getCdService().delete(id);
		}
		catch(MyException e)
		{
			e.printStackTrace();
		}
	}

	// 升序排序
	private transient final Comparator	propertyAscEndingComparator	= new Comparator()
																	{
																		public int compare(
																				Object object1,
																				Object object2)
																		{

																			try
																			{
																				String property1 = BeanUtils
																						.getProperty(
																								object1,
																								CDBean.this.sortByProperty);
																				String property2 = BeanUtils
																						.getProperty(
																								object2,
																								CDBean.this.sortByProperty);
																				return property1
																						.toLowerCase()
																						.compareTo(
																								property2
																										.toLowerCase());
																			}
																			catch(IllegalAccessException e)
																			{
																				// TODO 自动生成 catch 块
																				e.printStackTrace();
																				return 0;
																			}
																			catch(InvocationTargetException e)
																			{
																				// TODO 自动生成 catch 块
																				e.printStackTrace();
																				return 0;
																			}
																			catch(NoSuchMethodException e)
																			{
																				// TODO 自动生成 catch 块
																				e.printStackTrace();
																				return 0;
																			}
																		}
																	};

	// 降序排序
	private transient final Comparator	propertyDesEndingComparator	= new Comparator()
																	{
																		public int compare(
																				Object object1,
																				Object object2)
																		{

																			try
																			{
																				String property1 = BeanUtils
																						.getProperty(
																								object1,
																								CDBean.this.sortByProperty);
																				String property2 = BeanUtils
																						.getProperty(
																								object2,
																								CDBean.this.sortByProperty);
																				return property2
																						.toLowerCase()
																						.compareTo(
																								property1
																										.toLowerCase());
																			}
																			catch(IllegalAccessException e)
																			{
																				// TODO 自动生成 catch 块
																				e.printStackTrace();
																				return 0;
																			}
																			catch(InvocationTargetException e)
																			{
																				// TODO 自动生成 catch 块
																				e.printStackTrace();
																				return 0;
																			}
																			catch(NoSuchMethodException e)
																			{
																				// TODO 自动生成 catch 块
																				e.printStackTrace();
																				return 0;
																			}
																		}
																	};

	/**
	 * 以下代码为排序代码
	 * @return String
	 */
	// 按标题升序排序
	public String sortTitleAsc()
	{
		
		sortByProperty = "specialTitle";
		cds.setWrappedData(sort(propertyAscEndingComparator));
		return null;
	}

	// 按标题降序排序
	public String sortTitleDesc()
	{
		System.out.println(((CD)temp.get(1)).getSpecialTitle());
		sortByProperty = "specialTitle";
		cds.setWrappedData(sort(propertyDesEndingComparator));
		System.out.println(((CD)temp.get(1)).getSpecialTitle());
		return null;
	}

	// 按艺术家升序排序
	public String sortArtistAsc()
	{
		sortByProperty = "artist";
		cds.setWrappedData(sort(propertyAscEndingComparator));
		return null;
	}

	// 按艺术家降序排序
	public String sortArtistDesc()
	{
		sortByProperty = "artist";
		cds.setWrappedData(sort(propertyDesEndingComparator));
		return null;
	}

	private List sort(Comparator comparator)
	{
		
		Collections.sort(temp,comparator);
		
		return temp;
	}

	/**
	 * 以下是用户操作
	 */
	//添加CD到购物车
	public String addCDtoCard()
	{
		
		return null;
	}
	/*
	 * public Collection getItems() { return items; }
	 */

	/*
	 * public CD getCd() { return cd; } public void setCd(CD cd) { this.cd = cd; }
	 */

	/**
	 * 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"; }
	 */
}