1 前台業務功能
流程:首先産品頁面 裡面的購買連結 /shopping/cart.do,然後跳轉至該對應的類BuyCartAction類進行處理
用formbean收集資訊
public class BuyCartForm extends BaseForm {
private Integer productid;
private Integer styleid;
private String directUrl;
}
然後BuyCartAction類處理代碼
@Controller("/shopping/cart")
public class BuyCartAction extends Action {
@Resource ProductInfoService infoService;
@Override
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
BuyCartForm formbean = (BuyCartForm)form;
BuyCart cart = WebUtil.getBuyCart(request); //從session中取得購物車
if(cart == null ){
cart = new BuyCart();
request.getSession().setAttribute("buyCart", cart);
}
//往cookie裡面添加SessionID,這樣可以解決不同浏覽器共享Session的問題,時間和Session的生命周期一樣
WebUtil.addCookie(response, "JSESSIONID", request.getSession().getId(), request.getSession().getMaxInactiveInterval());
if(formbean.getProductid()!=null && formbean.getProductid()>0){ //往購物車裡面添加商品
ProductInfo product = infoService.find(formbean.getProductid()); //處理使用者的非法輸入
if(product!=null){//下面處理産品的樣式,隻保留使用者選擇的樣式
ProductStyle currentStyle = null;
for(ProductStyle style : product.getStyles()){
if(style.getId().equals(formbean.getStyleid())){
currentStyle = style;
break;
}
}
product.getStyles().clear();
product.addProductStyle(currentStyle);
}
BuyItem item = new BuyItem(product);//把商品添加進購物車
cart.addBuyItem(item);
}
return mapping.findForward("buyCart");
}
}
在struts.xml檔案中儲存對應的跳轉頁面
<!--購物車 -->
<action path="/shopping/cart" name="buyCartForm" scope="request">
<forward name="buyCart" path="/WEB-INF/page/shopping/cart.jsp"/>
</action>
cart.jsp顯示頁面中顯示購物項:
<!-- loop begin -->
<c:forEach items="${buyCart.items}" var="item">
<TR vAlign="top">
<TD><STRONG><A href="" target="_blank" rel="external nofollow" target="_blank">${item.product.name}</A></STRONG> <span class="h3color">[顔色/樣式:<c:forEach items="${item.product.styles}" var="style">${style.name}</c:forEach>]</span><BR><BR></TD>
<TD width="112" align="center"><SPAN class="price" title="¥${item.product.marketprice}元"><FONT color="black"><S><B>¥${item.product.marketprice}元</B></S></FONT></SPAN></TD>
<TD width="181"><P align="center"><SPAN class="price"><B>¥${item.product.sellprice} 元</B></SPAN> <BR>
為您節省:<SPAN class=price>¥${item.product.savedPrice}元 </SPAN><BR> </P></TD>
<TD align="middle" width="73"><INPUT type="text" style="WIDTH: 30px" maxLength="3" value="${item.amount}" name="amount_${item.product.id}_<c:forEach items="${item.product.styles}" var="style">${style.id}</c:forEach>" οnkeypress="javascript:InputIntNumberCheck()"></TD>
<TD align="middle" width="66"><a href="<html:rewrite action=" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" /shopping/cart/manage" />?method=delete&directUrl=${param.directUrl }&buyitemid=${item.product.id}-<c:forEach items="${item.product.styles}" var="style">${style.id}</c:forEach>"><img height="17" src="/images/buy/delete.gif" width="45" ></a></TD>
</TR>
<TR vAlign="top">
<TD colSpan="5"><IMG height=1 src="/images/buy/green-pixel.gif" width="100%" ></TD>
</TR>
</c:forEach>
<!-- loop end -->
代碼注釋
<TD align="middle" width="66"><a href="<html:rewrite action=" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" /shopping/cart/manage" />?method=delete&directUrl=${param.directUrl }&buyitemid=${item.product.id}-<c:forEach items="${item.product.styles}" var="style">${style.id}</c:forEach>"><img height="17" src="/images/buy/delete.gif" width="45" ></a></TD>
該代碼用于删除一條購物項:
對應1-1,前面表示産品ID,後面為樣式ID,用于确定一個購物項
在class BuyCartForm類中有直接方法對buyitemid進行拆開,一個參數可以儲存兩個值
public void setBuyitemid(String buyitemid) {
if(buyitemid!=null){
String[] ids = buyitemid.split("-");
if(ids.length==2){
productid = new Integer(ids[0]);
styleid = new Integer(ids[1]);
}
}
}
然後就是購物車頁面中的删除購物項,清空購物車,修改數量等等操作,對應的類為BuyCartManageAction類