📄 interest_cal.jsp
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<%@page contentType="text/html;charset=GBK"%>
<%@page language="java" import="java.sql.*"%>
<jsp:useBean id="db" class="bean.ConnDB" scope="page"/>
<html>
<body>
<table border="0" width="100%">
<tr>
<td width="100%"> <p align="center"><b><font size="5" color="#FF9900">利息计算</font></b></td>
</tr>
</table>
<HR color="#FF9900">
<p>
<%! float rate;
double amt;
double interest;
int per;
String cur;%>
<%
request.setCharacterEncoding("GBK");
amt=Double.parseDouble(request.getParameter("amount"));
per=Integer.parseInt(request.getParameter("period"));
cur=(String)(request.getParameter("currency"));
try{
String strQuery="select * from interest where currency='"+cur+"' and period="+per;
ResultSet rs=db.executeQuery(strQuery);
while(rs.next())
{
rate=rs.getFloat("rate");
}
interest=(long)(rate*amt*per/12)/100;
db.close();
}catch(Exception e){}%>
<p> 币种：<%=cur%>
<p> 本金：<%=amt%>
<p> 存期：<%=per%> (月)
<p> 利率：<%=rate%><p>
利息：<%=interest%>
<p><HR color="#FF9900">
</body>
</html>
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