Question

我编写了一个用于验证JSp页面的代码。但特殊字符验证不起作用。有人可以告诉我原因。如果我的方法有误，请用正确的方法通知我。

JSP代码

<%-- 
    Document   : LapsePeriodicFeedBack
    Created on : Dec 7, 2012, 2:50:28 PM
    Author     : Admin
--%>

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<%@ page import="java.util.*" %>
<%@page import="PeriodicFeedBack.PeriodicType"%>

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>LapsePeriodicList</title>
        <style>

        body {
            font: 11px Arial, Helvetica, sans-serif;
            background-color:#E4Eff4;
            padding: 0;
            margin: 10px;
        }
        </style>
        <script>
            function validateForm(){
                var iChars = "!@#$%^&*()+=-[]\\\';,./{}|\":<>?";
                var selectindex=document.forms["lapse"]["periodmenu"].selectedIndex;
                var whitespace = /\w+/g;
                var x= document.forms["lapse"]["lapsedays"].value;
                var textlength=document.forms["lapse"]["lapsedays"].length;
                if(x==""){
                    alert("Days Cant Be Empty");
                    return false;
                }
                if(!whitespace.test(x)){
                    alert("White Spaces are not Allowed");
                    return false;
                }
                if(selectindex==0){

                    alert("Please select Days from menu");
                }
                if(isNaN(x)){
                    alert("Only Numbers Allowed");
                    return false;
                }

        if(x.indexOf(iChars) != -1) {
        alert ("The box has special characters. \nThese are not allowed.\n");
        return false;
   }

 }




        </script>

    </head>
    <body>
        <form  method="post" name="lapse" onsubmit="return validateForm()" action="LapsePeriodicFbUpdate">
            <table width="450px" border="1" align="center" style='border-collapse: collapse;font: 13px Arial, Helvetica, sans-serif;' bordercolor='#000000'>

                <tr  style="color:'#ffffff';background-color:#CA1619;background-repeat:repeat-x;font: 13px Arial, Helvetica, sans-serif;">
                    <td colspan="4" align="center">
               <font color="#ffffff" > <b>Periodic Feedback List</b></font></td></tr>
                <tr >
                    <td align="center">
                    Periodic Feedback Days</td>
                    <td align="center">
                        <select id="periodmenu" STYLE="width: 150px" name="periodmenu">
                            <option>Select</option>
                            <%
        PeriodicType p = new PeriodicType();
        ArrayList periodicList = p.getPeriodicType();
        for (int i = 0; i < periodicList.size(); i++) {%>
        <option value="<%=periodicList.get(i)%>">

                                <% out.println(periodicList.get(i));
        }%>
                            </option>
                    </select></td>
                </tr>
                <tr>
                    <td align="center">
                    Lapse Days &nbsp;</td>
                    <td align="center">
                     <input id="lapsedays" name="lapsedays" onkeyup="nospaces(this)" style="width:145px;" type="text" />
                    </td>
                     </tr>
                     <tr>
                         <td align="right" colspan="2"><input type="submit" id="submit" value="Submit"/></td>
                     </tr>


            </table>
        </form>
        <p>
        &nbsp;</p>
    </body>
</html>

Answer 1

x.indexOf(iChars)行与x字符串匹配iChars字符串。

您可以使用正则表达式搜索，如下所示：

var iChars = "[!@#$%^&*()+=\\-\\[\\]\\\';,./{}|\":<>?]{1}";
....
if(x.search(iChars) != -1)
....

JSP特殊字符验证无效

1 个答案: