WebRoot/dingdan/ddpjdo.jsp

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<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<%@ page import="com.util.*"%>

<%
/*
订单评价添加后台
*/
DBO db=new DBO();//初始数据库链接
request.setCharacterEncoding("gb2312");//设置字符集
ResultSet rs=null;//声明结果集
	String keyid =(String)request.getParameter("keyid");
String dd=(String)request.getParameter("dd");//变量:订单
String pj=(String)request.getParameter("pj");//变量:评价
String yh=(String)request.getParameter("yh");//变量:用户
String sj=(String)request.getParameter("sj");//变量:时间
String path = request.getContextPath();
String sql="";//声明sql

;//订单评价SQL 语句
int row=1;///定义执行结果
	int a=0;	
try{

sql="select count(1) as num from ddpj where dd='"+dd+"' and yh='"+yh+"'";
rs=db.query(sql);
if(rs.next()){
a=rs.getInt("num");
}
if(a>0){
out.println("<script>");
out.println("alert('操作失败，你已经评价过');");
out.println("window.location='"+path+"/dingdanServlet?method=list'");
out.println("</script>");
return;
}
 sql="insert into ddpj(dd,pj,yh,sj) values('"+dd+"','"+pj+"','"+yh+"','"+sj+"')";
	
		//int row =0;
		row=db.update(sql);
}catch(Exception e){
System.out.println(e.toString());}
if(row==1){
out.println("<script>");
out.println("alert('操作成功');");
out.println("window.location='"+path+"/dingdanServlet?method=list'");
out.println("</script>");
}else{
out.println("<script>");
out.println("alert('操作失败');");
out.println("window.location='ddpjadd.jsp'");
out.println("</script>");
}
db.close();
%>