更新cart item的price

            $quote = Mage::getModel('checkout/cart')->getQuote();            $_cartItems = $quote->getAllVisibleItems();                        foreach ($_cartItems as $_cartItem) {                $productId = $_cartItem->getData('product_id');                                                                         $_cartItem->setOriginalCustomPrice($newprice);            }            $quote->collectTotals();            $quote->save();

注意:如果使用sales_quote_add_item这个observer,代码如下

public function updatePrice( $observer ){        $event = $observer->getEvent();        $quote_item = $event->getQuoteItem();        $new_price = 200;        $quote_item->setOriginalCustomPrice($new_price);        $quote_item->setTotalPrice(350);}