showvote.txt

来自「企业培训过程中的记录,希望对找工作的朋友帮助.」· 文本 代码 · 共 63 行

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63
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<%@ page contentType="text/html;charset=GB2312" %>
<%@ page import="java.sql.*" %>
<%@ page import="java.io.*" %>
<HTML>
<BODY>
  <p> <font size=5> 投票情况表 </font>
  <% 
        
     //加载桥接器
     try{
          Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        }
     catch(ClassNotFoundException e)
        {}

     Connection con=null;
     Statement sql=null;
     ResultSet rs=null;
     ResultSet rs2=null;
                          
             
     //显示投票后的表中的记录
     try{

           con=DriverManager.getConnection("jdbc:odbc:grade","","");
           sql=con.createStatement();

           rs2=sql.executeQuery("select  sum(count) from candidate");
           rs2.next();
           int total=rs2.getInt(1);

           rs=sql.executeQuery("SELECT * FROM candidate "); 
           out.print("<Table Border>");
           out.print("<TR>");
           out.print("<TH width=100>"+"姓名"+"</th>");
           out.print("<TH width=100>"+"得票数"+"</th>");
           out.print("<TH width=100>"+"总票数:"+total+"</th>");
           out.print("</TR>");

           while(rs.next())
               {
                   out.print("<TR>");
                   out.print("<TD>"+rs.getString(1)+"</TD>");
                   int count=rs.getInt("count");
                   out.print("<TD>"+count+"</TD>");

                   double b=(count*100)/total; //得票的百分比。
                   out.print("<TD>"+b+"%"+"</TD>");

                   out.print("</TR>");
               }
           out.print("</Table>");
           con.close();
         }
     catch(SQLException e) 
         {}
            
  %>

</BODY>
</HTML>

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