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HttpSession session = request.getSession();
//ÕâÒ»²½¾ÍÊÇ´ÓsessionÖлñÈ¡¹ºÎï³µ.
Vector car = (Vector) session.getAttribute("car");
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IndexForm inf = (IndexForm) form;
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String[] choice = inf.getChoice();
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for (int i = 0; i < choice.length; i++) {
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boolean f = false;
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productBean pb = pdo.showproductByid(Integer
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