祈雨v的博客

web.xml配置 register com.amark.servlet.RegisterServlet //一个Servlet可以映射多个URL register /servlet/RegisterServlet register /register.htm html提交表单

Servlet提供下载 public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setHeader("Content-Disposition","attachment;filename=1.gif")

添加cookie public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String username=request.getParameter("username"); String password=reque

Servlet的三个变量作用域 ServletContent 范围最大，整个应用程序都能访问 HttpSession 范围中等，回话级别，在当前浏览器都能访问 HttpServletRequest 范围最小，请求结束，变量作用域结束 添加获取request变量 request.setAttribute("username", "w