SQL Server对数据进行删除

     <table border=1px  style="width:500px;height:200px;text-align:center;margin: 0 auto">
      <tr style="background:red">
          <td>编号</td>
           <td>书名</td>
            <td>价格</td>
             <td>喜爱度</td>
              <td>作者</td>
              <td>删除</td>
              <td>修改</td>
        </tr> 
     
    <% 

          //引用连接数据库方法
         sqlServer sq=new sqlServer();
           //得到数据库连接
          Connection con = sq.getConnection();
           //编写sql语句
          String sql="select * from Dog"; 
           
           //得到数据库对象操作
           Statement st=con.createStatement();
            // 得到查询的结果
            ResultSet rs = st.executeQuery(sql);
      while(rs.next()){
         
              %> <tr>
             <td> <%out.print(rs.getInt(1) + "\t"); %></td>
             
             
              <td> <%out.print(rs.getString(2) + "\t"); %></td>
              
             
             <td> <%out.print(rs.getInt(3) + "\t"); %></td>
            
            
              <td> <%out.print(rs.getInt(4)+"%" + "\t"); %></td>
         
         
             <td> <%out.println(rs.getString(5)+ "\t"); %></td>
             
             <td> <a href="Delect.jsp?id=<%out.print(rs.getInt(1) + "\t"); %>">删除</a></td>
             <td> <a href="Update.jsp?id=<%out.print(rs.getInt(1) + "\t"); %>">修改</a></td>
              </tr><%
           }
      
      
              //释放资源
          sq.ShiFang(rs,st,con);
        
     %>
     
     
     
     </table>

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@page import="jdbc.sqlServer"%>
<%@page import="java.sql.Connection"%>
<%@page import="java.sql.PreparedStatement"%>
<%
String id = request.getParameter("id");
id = new String(id.getBytes("ISO-8859-1"),"utf-8");



   //引用连接数据库方法
  sqlServer sq=new sqlServer();
    //得到数据库连接
   Connection con = sq.getConnection();
    //编写sql语句
 String sql="delete  from  Dog  where id=" + id + "";
    
  //得到数据库操作对象

  PreparedStatement st =con.prepareStatement(sql);

     // 得到查询的结果
if(st.executeUpdate()>0){
%>
     <script type="text/javascript">
    alert("删除成功");
    
    location="showLog.jsp";
    </script>
    <% 
         
}else{
              
      %>
       <script type="text/javascript">
            alert("删除失败");
            
            location="showLog.jsp";
        </script>
   <%
             
          }
 

%>