作业：修改JSP注册页面
---恢复内容开始---
表单:
userLogin.jsp:
<%-- Created by IntelliJ IDEA. User: axe Date: 2019/9/26 Time: 15:28 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>注册</title> <style> span{ color: red; } </style> </head> <body> <form action="doUserLogin.jsp"method="post"> 账号: <input type="text"name="userName"placeholder="请输入账号"><span>*</span><br/> 密码: <input type="password"name="password"placeholder="请输入密码"><span>*</span><br/> 爱好:<br/> <input type="checkbox"name="hobby"value="游泳">游泳<br/> <input type="checkbox"name="hobby"value="下棋">下棋<br/> <input type="checkbox"name="hobby"value="看妹子">看妹子<br/> <input type="submit"value="注册"> </form> </body> </html>
页面模板：（插入表单后的）
yemian.jsp:
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <meta charset="utf-8"> <script id="jqbb" src="js/jquery.min.js"></script> <style type="text/css"> body{ overflow: hidden; margin: 0; background: #333; } h1{ position: fixed; top: 50%; left: 0; width: 100%; text-align: center; transform:translateY(-50%); font-family: 'Love Ya Like A Sister', cursive; font-size: 40px; color: #c70012; padding: 0 20px; -moz-user-select:none;/*火狐*/ -webkit-user-select:none;/*webkit浏览器*/ -ms-user-select:none;/*IE10*/ -khtml-user-select:none;/*早期浏览器*/ user-select:none; } @media (min-width:1200px){ h1{ font-size: 60px; } } div{ width: 400px; height: 500px; position: absolute; left: 80px; top: 50px; line-height: 30px; } div{ margin: 300px; border: 1px solid white; height: 200px; height: 200px; background: -moz-buttonhoverface; text-align: center; /*transform:translateY(50%);!**下移元素**!*/ } </style> </head> <body> <div> <form action="doUserLogin.jsp"method="post"> 账号: <input type="text"name="userName"placeholder="请输入账号"><span>*</span><br/> 密码: <input type="password"name="password"placeholder="请输入密码"><span>*</span><br/> 爱好: <input type="checkbox"name="hobby"value="游泳">游泳 <input type="checkbox"name="hobby"value="下棋">下棋 <input type="checkbox"name="hobby"value="看妹子">看妹子 <input type="submit"value="注册"> </form> </div> <canvas></canvas> </body> <script> var canvas = document.querySelector("canvas"), ctx = canvas.getContext("2d"); var ww,wh; function onResize(){ ww = canvas.width = window.innerWidth; wh = canvas.height = window.innerHeight; } ctx.strokeStyle = "red"; ctx.shadowBlur = 25; ctx.shadowColor = "hsla(0, 100%, 60%,0.5)"; var precision = 100; var hearts = []; var mouseMoved = false; function onMove(e){ mouseMoved = true; if(e.type === "touchmove"){ hearts.push(new Heart(e.touches[0].clientX, e.touches[0].clientY)); hearts.push(new Heart(e.touches[0].clientX, e.touches[0].clientY)); } else{ hearts.push(new Heart(e.clientX, e.clientY)); hearts.push(new Heart(e.clientX, e.clientY)); } } var Heart = function(x,y){ this.x = x || Math.random()*ww; this.y = y || Math.random()*wh; this.size = Math.random()*2 + 1; this.shadowBlur = Math.random() * 10; this.speedX = (Math.random()+0.2-0.6) * 8; this.speedY = (Math.random()+0.2-0.6) * 8; this.speedSize = Math.random()*0.05 + 0.01; this.opacity = 1; this.vertices = []; for (var i = 0; i < precision; i++) { var step = (i / precision - 0.5) * (Math.PI * 2); var vector = { x : (15 * Math.pow(Math.sin(step), 3)), y : -(13 * Math.cos(step) - 5 * Math.cos(2 * step) - 2 * Math.cos(3 * step) - Math.cos(4 * step)) } this.vertices.push(vector); } } Heart.prototype.draw = function(){ this.size -= this.speedSize; this.x += this.speedX; this.y += this.speedY; ctx.save(); ctx.translate(-1000,this.y); ctx.scale(this.size, this.size); ctx.beginPath(); for (var i = 0; i < precision; i++) { var vector = this.vertices[i]; ctx.lineTo(vector.x, vector.y); } ctx.globalAlpha = this.size; ctx.shadowBlur = Math.round((3 - this.size) * 10); ctx.shadowColor = "hsla(0, 100%, 60%,0.5)"; ctx.shadowOffsetX = this.x + 1000; ctx.globalCompositeOperation = "screen" ctx.closePath(); ctx.fill() ctx.restore(); }; function render(a){ requestAnimationFrame(render); hearts.push(new Heart()) ctx.clearRect(0,0,ww,wh); for (var i = 0; i < hearts.length; i++) { hearts[i].draw(); if(hearts[i].size <= 0){ hearts.splice(i,1); i--; } } } onResize(); window.addEventListener("mousemove", onMove); window.addEventListener("touchmove", onMove); window.addEventListener("resize", onResize); requestAnimationFrame(render); </script> </html>
验证操作表单：
doUserLogin.jsp:
<%-- Created by IntelliJ IDEA. User: axe Date: 2019/9/26 Time: 15:58 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>验证注册</title> </head> <body> <% request.setCharacterEncoding("utf-8"); %> 注册成功 账号名 <% String name = request.getParameter("userName"); if(name!=null&&name!=""){ if(name.equals("admin")) { request.setAttribute("mess", "账号名已存在，注册失败"); request.getRequestDispatcher("shibai.jsp").forward(request,response); }else{ request.setAttribute("mess","账号名有效"); request.getRequestDispatcher("success.jsp").forward(request,response); } // out.println(name.toSettring()); } %> <br/> 密码: <% String password = request.getParameter("password"); if(password!=null){ out.println(password); } %> <br/> 爱好 <% // response.setCharacterEncoding("UTF-8"); String []hobbys = request.getParameterValues("hobby"); for (String hobby: hobbys){ out.print(hobby+"<br/>"); } %> </body> </html>
success.jsp:
<%-- Created by IntelliJ IDEA. User: axe Date: 2019/9/26 Time: 15:29 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> <style> h1{ color: green; } </style> </head> <body> <h1>注册成功</h1> <% String s = (String) request.getAttribute("mess"); out.println(s); Integer jishu = (Integer)application.getAttribute("jishu"); if (jishu==null){ application.setAttribute("jishu",1); }else { Integer i = (Integer) application.getAttribute("jishu"); application.setAttribute("jishu",i+1); } %> </body> </html>
shibai.jsp:
<%-- Created by IntelliJ IDEA. User: axe Date: 2019/9/26 Time: 16:01 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>失败</title> <style> h1{ color: red; } </style> </head> <body> <h1>注册失败</h1> <% String s = (String) request.getAttribute("mess"); out.println(s); %> </body> </html>
效果：
输入已存在的admin则:
输入符合要求的账号名:
