先建一个数据库,其中有一个表count,此表只须一条记录三个字段(good,normal,bad)
再建两个文件(select.html和diaocha.jsp)
select.html(提供选择)
--------------------------------------------
<html>
<body>
<form action="diaocha.jsp" method="get">
<font color="blue" face="黑体" size="2">本站质量调查</font><br><hr width=100 align=left>
<input type="radio" name="diaocha" value="good"><font color="#003300">好</font><br>
<input type="radio" name="diaocha" value="normal"><font color="#009933">一般</font><br>
<input type="radio" name="diaocha" value="bad"><font color="#33CC33">差</font><br>
<input type="submit" value="提交">
</form>
</body>
</html>
diaocha.jsp(用来统计调查情况,并以条形显示结果)
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<html>
<body>
<%@ page contentType="text/html;charset=gb2312"%>
<%@ page import="java.sql.*" %>
<%
String select=request.getParameter("diaocha");
byte[] t=select.getBytes("ISO8859_1");
select=new String(t);
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con=DriverManager.getConnection("Jdbc:odbc:diaocha");
Statement smt=con.createStatement();
String sql;
out.println("<font size=3 color=blue><b>"+"投票结果如下:"+"</b></font><br><hr width=140 align=left>");
if (select.equals("good"))
{
sql="update diaocha set good=good+1";
smt.executeUpdate(sql);
}
else if(select.equals("normal"))
{
sql="update diaocha set normal=normal+1";
smt.executeUpdate(sql);
}
else
{
sql="update diaocha set bad=bad+1";
smt.executeUpdate(sql);
}
sql="select * from diaocha";
ResultSet rs=smt.executeQuery(sql);
rs.next();
int good=rs.getInt(1),normal=rs.getInt(2),bad=rs.getInt(3),total=good+normal+bad;
out.println("<font size=2 color=blue>");
out.println("<font color=#003300>"+"好的:"+"</font>");
out.println("<img src=\"1.jpg\" width="+"\""+good+"\""+"height=\"13\">");
out.println(good+"人"+"<br>");
out.println("<font color=#009933>"+"一般:"+"</font>");
out.println("<img src=\"2.jpg\" width="+"\""+normal+"\""+"height=\"13\">");
out.println(normal+"人"+"<br>");
out.println("<font color=#33CC33>"+"差的:"+"</font>");
out.println("<img src=\"3.jpg\" width="+"\""+bad+"\""+"height=\"13\">");
out.println(bad+"人"+"<br><br>");
out.println("<font size=1 color=green>");
out.println("总共有"+total+"人投票"+"<br></font>");
out.println("</font>");
con.close();
%>
</body>
</html>
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