点餐系统半成品，只有登陆功能

半成品，各种bug，要奔溃了，实现了简单的增删改查。 String phone=""; String password=""; phone=request.getParameter("phone"); password=request.getParameter("password"); String sql="Select Cu_Id from Customer Where Cu_Id='"+phone+"'";//查询名字 String sql1="Select Cu_PassWord from Customer Where Cu_PassWord='"+password+"'";//查询密码 //连接数据库 ResultSet rs = connDB.executeQuery(sql); ResultSet rs1 = connDB.executeQuery(sql1); if (rs.next() && rs1.next()) { request.getRequestDispatcher("CuDetails.jsp").forward(request, response); } else { request.getRequestDispatcher("fail.jsp").forward(request, response); }