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<Context path="/wap"
docBase="D:\IDE\MyEclipse\wap\WebRoot" reloadable="false" >
request.getContextPath(); -==> /wap
this.getServletContext().getRealPath("") ;// D:\IDE\MyEclipse\wap\WebRoot
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<jsp:useBean id="order" class="com.entity.Order" scope="request" />
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Order order=(Order)request.getAttribute("order");
if(order==null)
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<c:if
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<form action="b.jsp">
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</form>
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