@Action("forecart")
	public String cart() {
		User user =(User) ActionContext.getContext().getSession().get("user");
	    orderItems = orderItemService.list("user",user,"order", null);
	    for (OrderItem orderItem : orderItems) 
			productImageService.setFirstProdutImage(orderItem.getProduct());
	    return "cart.jsp";
	}

package com.how2java.tmall.action;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import org.apache.struts2.convention.annotation.Action;
import org.springframework.web.util.HtmlUtils;

import com.how2java.tmall.comparator.ProductAllComparator;
import com.how2java.tmall.comparator.ProductDateComparator;
import com.how2java.tmall.comparator.ProductPriceComparator;
import com.how2java.tmall.comparator.ProductReviewComparator;
import com.how2java.tmall.comparator.ProductSaleCountComparator;
import com.how2java.tmall.pojo.OrderItem;
import com.how2java.tmall.pojo.Product;
import com.how2java.tmall.pojo.User;
import com.how2java.tmall.service.ProductImageService;
import com.opensymphony.xwork2.ActionContext;

public class ForeAction extends Action4Result {
	@Action("forecart")
	public String cart() {
		User user =(User) ActionContext.getContext().getSession().get("user");
	    orderItems = orderItemService.list("user",user,"order", null);
	    for (OrderItem orderItem : orderItems) 
			productImageService.setFirstProdutImage(orderItem.getProduct());
	    return "cart.jsp";
	} 
	
	@Action("foreaddCart")
	public String addCart() {
        
		User user =(User) ActionContext.getContext().getSession().get("user");
        boolean found = false;
 
        List<OrderItem> ois = orderItemService.list("user",user,"order", null);
        for (OrderItem oi : ois) {
            if(oi.getProduct().getId()==product.getId()){
                oi.setNumber(oi.getNumber()+num);
                orderItemService.update(oi);
                found = true;
                break;
            }
        }       
         
        if(!found){
            OrderItem oi = new OrderItem();
            oi.setUser(user);
            oi.setNumber(num);
            oi.setProduct(product);
            orderItemService.save(oi);
        }
        return "success.jsp";
    }   	
	
	@Action("forebuy")
	public String buy() {
	    orderItems = new ArrayList<>();
	    for (int oiid : oiids) {
	        OrderItem oi= (OrderItem) orderItemService.get(oiid);
	        total +=oi.getProduct().getPromotePrice()*oi.getNumber();
	        orderItems.add(oi);
	        productImageService.setFirstProdutImage(oi.getProduct());
	    }
	     
	    ActionContext.getContext().getSession().put("orderItems", orderItems);
	    return "buy.jsp";
	}
	
	@Action("forebuyone")
	public String buyone() {
	    User user =(User) ActionContext.getContext().getSession().get("user");
	    boolean found = false;
	    List<OrderItem> ois = orderItemService.list("user",user,"order", null);
	    for (OrderItem oi : ois) {
	        if(oi.getProduct().getId()==product.getId()){
	            oi.setNumber(oi.getNumber()+num);
	            orderItemService.update(oi);
	            found = true;
	            oiid = oi.getId();
	            break;
	        }
	    }       
	 
	    if(!found){
	        OrderItem oi = new OrderItem();
	        oi.setUser(user);
	        oi.setNumber(num);
	        oi.setProduct(product);
	        orderItemService.save(oi);
	        oiid = oi.getId();
	    }
	    return "buyPage";
	}
	
	@Action("foresearch")
	public String search(){
	    products= productService.search(keyword,0,20);
	    productService.setSaleAndReviewNumber(products);
	    for (Product product : products) 
	    	productImageService.setFirstProdutImage(product);	
		
		return "searchResult.jsp";
	}	
	@Action("forecategory")
	public String category(){
	    t2p(category);
	    productService.fill(category);
	    productService.setSaleAndReviewNumber(category.getProducts());       
	     
	    if(null!=sort){
	    switch(sort){
	        case "review":
	            Collections.sort(category.getProducts(),new ProductReviewComparator());
	            break;
	        case "date" :
	            Collections.sort(category.getProducts(),new ProductDateComparator());
	            break;
	             
	        case "saleCount" :
	            Collections.sort(category.getProducts(),new ProductSaleCountComparator());
	            break;
	             
	        case "price":
	            Collections.sort(category.getProducts(),new ProductPriceComparator());
	            break;
	             
	        case "all":
	            Collections.sort(category.getProducts(),new ProductAllComparator());
	            break;
	        }
	    }
	    return "category.jsp";  		
	}
	
	@Action("foreloginAjax")
	public String loginAjax() {
		
		user.setName(HtmlUtils.htmlEscape(user.getName()));
	    User user_session = userService.get(user.getName(),user.getPassword());
	      
	    if(null==user_session)
	        return "fail.jsp"; 
	    
	    ActionContext.getContext().getSession().put("user", user_session);
	    return "success.jsp"; 		
	}	
	
	@Action("forecheckLogin")
	public String checkLogin() {
		User u =(User) ActionContext.getContext().getSession().get("user");
		if(null==u)
			return "fail.jsp";
		else
			return "success.jsp";
	}
	
	@Action("foreproduct")
	public String product() {
		t2p(product);
	     
		productImageService.setFirstProdutImage(product);
	    productSingleImages = productImageService.list("product",product,"type", ProductImageService.type_single);
	    productDetailImages = productImageService.list("product",product,"type", ProductImageService.type_detail);
	    product.setProductSingleImages(productSingleImages);
	    product.setProductDetailImages(productDetailImages);
	     
	    propertyValues = propertyValueService.listByParent(product);       
	 
	    reviews = reviewService.listByParent(product);
	    
	    productService.setSaleAndReviewNumber(product);

	    return "product.jsp";        	
	}
	
	@Action("forelogout")
	public String logout() {
		ActionContext.getContext().getSession().remove("user");
		return "homePage"; 	
	}
	
	@Action("forelogin")
	public String login() {
		user.setName(HtmlUtils.htmlEscape(user.getName()));
	    User user_session = userService.get(user.getName(),user.getPassword());
	    if(null==user_session){
	        msg= "账号密码错误";
	        return "login.jsp"; 
	    }
	    ActionContext.getContext().getSession().put("user", user_session);
	    return "homePage"; 		
	}
	
	@Action("foreregister")
	public String register() {
		user.setName(HtmlUtils.htmlEscape(user.getName()));
		boolean exist = userService.isExist(user.getName());
      
		 if(exist){
			 msg = "用户名已经被使用,不能使用";
			 return "register.jsp";  
		 }
		 userService.save(user);
		 return "registerSuccessPage";
	}	
	@Action("forehome")
	public String home() {
		categorys = categoryService.list();
		productService.fill(categorys);
		productService.fillByRow(categorys);
		return "home.jsp";
	}
}

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8" isELIgnored="false"%>

<%@include file="include/header.jsp"%>
<%@include file="include/top.jsp"%>
<%@include file="include/simpleSearch.jsp"%>
<%@include file="include/cart/cartPage.jsp"%>
<%@include file="include/footer.jsp"%>

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8" isELIgnored="false"%>
	
<script>
var deleteOrderItem = false;
var deleteOrderItemid = 0;
$(function(){

	$("a.deleteOrderItem").click(function(){
		deleteOrderItem = false;
		var oiid = $(this).attr("oiid")
		deleteOrderItemid = oiid;
		$("#deleteConfirmModal").modal('show');	   
	});
	$("button.deleteConfirmButton").click(function(){
		deleteOrderItem = true;
		$("#deleteConfirmModal").modal('hide');
	});
	
	$('#deleteConfirmModal').on('hidden.bs.modal', function (e) {
		if(deleteOrderItem){
			var page="foredeleteOrderItem";
			$.post(
				    page,
				    {"orderItem.id":deleteOrderItemid},
				    function(result){
						if("success"==result){
							$("tr.cartProductItemTR[oiid="+deleteOrderItemid+"]").hide();
						}
						else{
							location.href="login.jsp";
						}
				    }
				);
			
		}
	})	
	
	$("img.cartProductItemIfSelected").click(function(){
		var selectit = $(this).attr("selectit")
		if("selectit"==selectit){
			$(this).attr("src","img/site/cartNotSelected.png");
			$(this).attr("selectit","false")
			$(this).parents("tr.cartProductItemTR").css("background-color","#fff");
		}
		else{
			$(this).attr("src","img/site/cartSelected.png");
			$(this).attr("selectit","selectit")
			$(this).parents("tr.cartProductItemTR").css("background-color","#FFF8E1");
		}
		syncSelect();
		syncCreateOrderButton();
		calcCartSumPriceAndNumber();
	});
	$("img.selectAllItem").click(function(){
		var selectit = $(this).attr("selectit")
		if("selectit"==selectit){
			$("img.selectAllItem").attr("src","img/site/cartNotSelected.png");
			$("img.selectAllItem").attr("selectit","false")
			$(".cartProductItemIfSelected").each(function(){
				$(this).attr("src","img/site/cartNotSelected.png");
				$(this).attr("selectit","false");
				$(this).parents("tr.cartProductItemTR").css("background-color","#fff");
			});			
		}
		else{
			$("img.selectAllItem").attr("src","img/site/cartSelected.png");
			$("img.selectAllItem").attr("selectit","selectit")
			$(".cartProductItemIfSelected").each(function(){
				$(this).attr("src","img/site/cartSelected.png");
				$(this).attr("selectit","selectit");
				$(this).parents("tr.cartProductItemTR").css("background-color","#FFF8E1");
			});				
		}
		syncCreateOrderButton();
		calcCartSumPriceAndNumber();
		
	});
	
	$(".orderItemNumberSetting").keyup(function(){
		var pid=$(this).attr("pid");
		var stock= $("span.orderItemStock[pid="+pid+"]").text();
		var price= $("span.orderItemPromotePrice[pid="+pid+"]").text();
		
		var num= $(".orderItemNumberSetting[pid="+pid+"]").val();
		num = parseInt(num);
		if(isNaN(num))
			num= 1;
		if(num<=0)
			num = 1;
		if(num>stock)
			num = stock;
		
		syncPrice(pid,num,price);
	});

	$(".numberPlus").click(function(){
		
		var pid=$(this).attr("pid");
		var stock= $("span.orderItemStock[pid="+pid+"]").text();
		var price= $("span.orderItemPromotePrice[pid="+pid+"]").text();
		var num= $(".orderItemNumberSetting[pid="+pid+"]").val();

		num++;
		if(num>stock)
			num = stock;
		syncPrice(pid,num,price);
	});
	$(".numberMinus").click(function(){
		var pid=$(this).attr("pid");
		var stock= $("span.orderItemStock[pid="+pid+"]").text();
		var price= $("span.orderItemPromotePrice[pid="+pid+"]").text();
		
		var num= $(".orderItemNumberSetting[pid="+pid+"]").val();
		--num;
		if(num<=0)
			num=1;
		syncPrice(pid,num,price);
	});	
	
	$("button.createOrderButton").click(function(){
		var params = "";
		$(".cartProductItemIfSelected").each(function(){
			if("selectit"==$(this).attr("selectit")){
				var oiid = $(this).attr("oiid");
				params += "&oiids="+oiid;
			}
		});
		params = params.substring(1);
		location.href="forebuy?"+params;
	});
	
})

function syncCreateOrderButton(){
	var selectAny = false;
	$(".cartProductItemIfSelected").each(function(){
		if("selectit"==$(this).attr("selectit")){
			selectAny = true;
		}
	});
	
	if(selectAny){
		$("button.createOrderButton").css("background-color","#C40000");
		$("button.createOrderButton").removeAttr("disabled");
	}
	else{
		$("button.createOrderButton").css("background-color","#AAAAAA");
		$("button.createOrderButton").attr("disabled","disabled");		
	}
		
}
function syncSelect(){
	var selectAll = true;
	$(".cartProductItemIfSelected").each(function(){
		if("false"==$(this).attr("selectit")){
			selectAll = false;
		}
	});
	
	if(selectAll)
		$("img.selectAllItem").attr("src","img/site/cartSelected.png");
	else
		$("img.selectAllItem").attr("src","img/site/cartNotSelected.png");
	
}
function calcCartSumPriceAndNumber(){
	var sum = 0;
	var totalNumber = 0;
	$("img.cartProductItemIfSelected[selectit='selectit']").each(function(){
		var oiid = $(this).attr("oiid");
		var price =$(".cartProductItemSmallSumPrice[oiid="+oiid+"]").text();
		price = price.replace(/,/g, "");
		price = price.replace(/￥/g, "");
		sum += new Number(price);	
		
		var num =$(".orderItemNumberSetting[oiid="+oiid+"]").val();
		totalNumber += new Number(num);	
		
	});
	
	$("span.cartSumPrice").html("￥"+formatMoney(sum));
	$("span.cartTitlePrice").html("￥"+formatMoney(sum));
	$("span.cartSumNumber").html(totalNumber);
}
function syncPrice(pid,num,price){
	$(".orderItemNumberSetting[pid="+pid+"]").val(num);
	var cartProductItemSmallSumPrice = formatMoney(num*price); 
	$(".cartProductItemSmallSumPrice[pid="+pid+"]").html("￥"+cartProductItemSmallSumPrice);
	calcCartSumPriceAndNumber();
	
	var page = "forechangeOrderItem";
	$.post(
		    page,
		    {"product.id":pid,"num":num},
		    function(result){
				if("success"!=result){
					location.href="login.jsp";
				}
		    }
		);

}
</script>	

<title>购物车</title>
<div class="cartDiv">
	<div class="cartTitle pull-right">
		<span>已选商品  (不含运费)</span>
		<span class="cartTitlePrice">￥0.00</span>
		<button class="createOrderButton" disabled="disabled">结 算</button>
	</div>
	
	<div class="cartProductList">
		<table class="cartProductTable">
			<thead>
				<tr>
					<th class="selectAndImage">
							<img selectit="false" class="selectAllItem" src="img/site/cartNotSelected.png">				
					全选
					
					</th>
					<th>商品信息</th>
					<th>单价</th>
					<th>数量</th>
					<th width="120px">金额</th>
					<th class="operation">操作</th>
				</tr>
			</thead>
			<tbody>
				<c:forEach items="${orderItems }" var="oi">
					<tr oiid="${oi.id}" class="cartProductItemTR">
						<td>
							<img selectit="false" oiid="${oi.id}" class="cartProductItemIfSelected" src="img/site/cartNotSelected.png">
							<a style="display:none" href="#nowhere"><img src="img/site/cartSelected.png"></a>
							<img class="cartProductImg"  src="img/productSingle_middle/${oi.product.firstProductImage.id}.jpg">
						</td>
						<td>
							<div class="cartProductLinkOutDiv">
								<a href="foreproduct?product.id=${oi.product.id}" class="cartProductLink">${oi.product.name}</a>
								<div class="cartProductLinkInnerDiv">
									<img src="img/site/creditcard.png" title="支持信用卡支付">
									<img src="img/site/7day.png" title="消费者保障服务,承诺7天退货">
									<img src="img/site/promise.png" title="消费者保障服务,承诺如实描述">
								</div>
							</div>
							
						</td>
						<td>
							<span class="cartProductItemOringalPrice">￥${oi.product.originalPrice}</span>
							<span  class="cartProductItemPromotionPrice">￥${oi.product.promotePrice}</span>
							
						</td>
						<td>
						
							<div class="cartProductChangeNumberDiv">
								<span class="hidden orderItemStock " pid="${oi.product.id}">${oi.product.stock}</span>
								<span class="hidden orderItemPromotePrice " pid="${oi.product.id}">${oi.product.promotePrice}</span>
								<a  pid="${oi.product.id}" class="numberMinus" href="#nowhere">-</a>
								<input pid="${oi.product.id}" oiid="${oi.id}" class="orderItemNumberSetting" autocomplete="off" value="${oi.number}">
								<a  stock="${oi.product.stock}" pid="${oi.product.id}" class="numberPlus" href="#nowhere">+</a>
							</div>					
						
						 </td>
						<td >
							<span class="cartProductItemSmallSumPrice" oiid="${oi.id}" pid="${oi.product.id}" >
							￥<fmt:formatNumber type="number" value="${oi.product.promotePrice*oi.number}" minFractionDigits="2"/>
							</span>
						
						</td>
						<td>
							<a class="deleteOrderItem" oiid="${oi.id}"  href="#nowhere">删除</a>
						</td>
					</tr>
				</c:forEach>				
			</tbody>
		
		</table>
	</div>
	
	<div class="cartFoot">
		<img selectit="false" class="selectAllItem" src="img/site/cartNotSelected.png">
		<span>全选</span>
<!-- 		<a href="#">删除</a> -->
		
		<div class="pull-right">
			<span>已选商品 <span class="cartSumNumber" >0</span> 件</span>
			
			<span>合计 (不含运费): </span> 
			<span class="cartSumPrice" >￥0.00</span>
			<button class="createOrderButton" disabled="disabled" >结  算</button>
		</div>
		
	</div>
	
</div>