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实际项目中比较常用的(JQuery+AJAX+MD5)，属于即时验证，亮点是验证用户是否存在的那一项，具体内容如下
具体示例
registe.jsp
<span style="font-size: large;"><%@ page pageEncoding="UTF-8"%> <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> <%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>注册验证</title> <script type="text/javascript" src="/UploadFiles/2021-04-02/md5.js">
AccountServlet.java
<span style="font-size: large;">package com.validator.test; import java.io.IOException; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class AccountServlet extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doPost(request, response); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String loginname=request.getParameter("loginname"); PrintWriter out = response.getWriter(); if(loginname.equals("abc123")){ out.println("1"); }else{ out.println("0"); } out.flush(); } }</span>以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。
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富贵资源网 Design By www.hznty.com
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