日期:2014-05-17  浏览次数:20830 次

JSP 网上商城产品添加为什么会报错??
Java code

<%
    request.setCharacterEncoding("GBK");

    int categoryId = -1;
    String strCategoryId = request.getParameter("categoryId");
    if(strCategoryId != null && !strCategoryId.trim().equals("")) {
        categoryId = Integer.parseInt(strCategoryId);
    
}


String action = request.getParameter("action");

if(action != null && action.trim().equals("add")) {
    String name = request.getParameter("name");
    double normalPrice = Double.parseDouble(request.getParameter("normalPrice"));
    double memberPrice = Double.parseDouble(request.getParameter("memberPrice"));
    String descr = request.getParameter("descr");
    
    Product p = new Product();
    p.setName(name);
    p.setNormalPrice(normalPrice);
    p.setMemberPrice(memberPrice);
    p.setDescr(descr);
    p.setCategoryId(categoryId);
    p.setPdate(new Date());
    ProductMgr.getInstance().add(p);
%>
<script type="text/javascript">

        parent.main.location.reload();    
    //-->
    </script>
<%
    }
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
    <head>
        <title>添加产品</title>
    </head>
    <center>
        产品添加
    </center>
    <body>
        <form action="ProductAdd.jsp" name="productadd" method="post">
            <table border="1" align="center">
                <input type="hidden" name="action" value="add" />
                <tr>
                    <td>
                        产品名称:
                    </td>
                    <td>
                        <input name="name" size="25" maxlength="25" type="text">
                </tr>

                <tr>
                    <td>
                        市场价格:
                    </td>
                    <td>
                        <input name="normalPrice" size="25" type="text">
                    </td>
                </tr>
                <tr>
                    <td>
                        会员价格:
                    </td>
                    <td>
                        <input name="memberPrice" size="25" type="text">
                    </td>
                </tr>

                <tr>
                    <td>
                        所属类别
                    </td>
                    <td>
                        <select name="categoryId">
                            <%
                                List<Category> categories = CategoryService.getInstance().getCategories();
                                for (Iterator<Category> it = categories.iterator(); it.hasNext();) {
                                    Category c = it.next();
                                    String selected = "";
                                    if (c.getId() == categoryId)
                                        selected = "selected";
                                    String preStr = "";
                                    for (int i = 1; i < c.getGrade(); i++)
                                        preStr += "--";
                            %>
                            <option value="<%=c.getId()%>|<%=c.getGrade()%>" <%=selected%>><%=preStr + c.getName()%></option>
                            <%
                                }