Kerer的博客

思路：用Java代码生成一个验证码图片，将其中的随机产生的数据存在session中<%@page import="javax.imageio.ImageIO"%><%@page import="java.awt.Font"%><%@page import="java.awt.Graphics"%><%@page import="java.awt.image.BufferedImage"%><

上传、下载、列表展示，删除操作servletpublic class FileServlst extends HttpServlet{ @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOExcep

<script type="text/javascript"> function checkAll(){ // 找到所有选项 var items = document.getElementsByName("item"); // 找到全选按钮的对象 var allNode = document.getElementsByName(

普通表单提交<form action="04_images.html" method="POST"> <input type="submit" value="提交"/></form> Button表单提交 （优点：可以对按钮做修饰，提交前进行相关操作）<form action="04_images.html" method="POST"> <input type="button