<%@ page contentType="text/htmlcharset=gb2312" %>
<%
String num = (String)request.getParameter("num")
try{
int n = Integer.parseInt(num)
if(n%2==0)
request.setAttribute("type","偶数")
else
request.setAttribute("type","奇数")
request.getRequestDispatcher("test03.jsp").forward(request,response)
}catch(Exception e){
e.printStackTrace()
}
%>
<%@ page contentType="text/htmlcharset=gb2312" %>
<% String type = (String)request.getAttribute("type")%>
<html>
<head><title>页面一</title></head>
<body>
<form action="test02.jsp" method="get">
请输入一个数字：<input type="text" name="num" />
<input type="submit" value="提交" />
</form>
${type }
</body>
</html>
Q5Action.jsp<%@page language="java" contentType="text/htmlcharset=UTF-8" pageEncoding="UTF-8" %>
<%
String cashAmount = request.getParameter("cashamount")
String taxAmount = ""
if (cashAmount != null &&cashAmount.length() >0) {
int cash = Integer.parseInt(cashAmount)
if (cash >0 &&cash <= 10000) {
taxAmount += cash * 0.0205
} else if (cash >10000 &&cash <= 30000) {
taxAmount += cash * 0.0215
} else if (cash >30000) {
taxAmount += cash * 0.0250
}
}
%>
<html>
<head>
<title>ST8016 Assignment Q5</title>
<script type="text/javascript">
function verify() {
regExp = /\d+\b/
if (!(regExp.test(thisForm.cashamount.value))) {
alert("You must enter valid amount!")
return false}
return true
}
</script>
</head>
<body>
<h1>Assignment 1 - Question 5</h1>
<b>Tax Calculation</b>
<br /><br />
<table border="1" cellpadding="3">
<tr bgcolor="#EEEEEE"><td align="center">Amount</td><td align="center">Tax Rate %</td></tr>
<tr><td align="center">1 - 10,000 </td><td align="center">2.05 % (0.0205)</td></tr>
<tr><td align="center">10,001 - 30,000 </td><td align="center">2.15 % (0.0215)</td></tr>
<tr><td align="center">>30,000 </td><td align="center">2.50 % (0.0250)</td></tr>
</table>
<form name="thisForm" action="Q5Action.jsp" method=”post”
onsubmit="return verify()">
Amount: <input name=cashamount size=10 value="<%=cashAmount%>"/><br/><br/>
<input type=submit value="Calculate Tax Amount"/>
</form>
<% if (taxAmount.length() >0) {%>
<p>Tax Amount: <b><%=taxAmount%></b></p>
<% }%>
</body>
</html>
jsp代码
<form action="" method="post">
<input type="text" name="num1">
<input type="text" name="num2">
<input type="submit" name="提交">
</form>
action 代码
HttpServletRequest request=ServletActionContext.getRequest()
int num1 =Intger.parInt(request.getParameter("num1"))
int num2 =Intger.parInt(request.getParameter("num2"))
int sum=num1+num2
request.setAttribute(sum,"sum")
jsp 代码
结果是：${sum}
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