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PreparedStatement stmt = con.prepareStatement("select * from Customer where CustomerName =? and cPassword=?");
stmt.setString(1, userid);
stmt.setString(2, password);
ResultSet rs = stmt.executeQuery("");
if (rs.next()) {
out.print(rs.getString("Name");
}
<%
Statement stmt=con.createStatement();
ResultSet rs=stmt.executeQuery("select * from Customer where CustomerName ='"+userid+"' "+"and cPassword='"+password+"'");
if(rs.next()) {
out.print(rs.getString("Name");
}
out.println(("姓名为:"+rs.getString("Name"));
当然前提是你数据库表中有Name这一项