此篇主要介绍的是接受前台ajax的数据，判断输入的验证码是否正确：
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% //从session里面获取图片验证码 String inputCode = request.getParameter("inputCode"); String numrand = (String)request.getSession().getAttribute("numrand"); if(numrand.equals(inputCode)){ out.print("true"); }else{ out.print("false"); } %>
