第八周jsp
1.
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>登录界面 index.jsp</title> </head> <body> <form action="pan.jsp" name="form1"> 用户名:<input type="text" name="name"><br> <br> 密码:<input type="password" value="12345" name="password"><br> <br> <input type="button" value="登录" name="d" onclick="fu()"> </form> <script type="text/javascript"> function fu() { if (form1.name.value == "") { alert("账号不能为空"); return; } if (form1.password.value == "") { alert("密码不能为空"); return; } form1.submit(); } </script> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>界面pan.jsp</title> </head> <body> <% request.setCharacterEncoding("utf-8"); String name = request.getParameter("name"); String password = request.getParameter("password"); if (name.equals(password)) { session.setAttribute("name", name); request.getRequestDispatcher("y.jsp") .forward(request, response); } else { request.getRequestDispatcher("no.jsp").forward(request, response); } %> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>登录成功界面y.jsp</title> </head> <body> <% String name = (String) session.getAttribute("name"); if (name == null) { response.sendRedirect("index.jsp"); } %> 欢迎你<%=name%><br> <br> <form action="tui.jsp"> <input type="submit" value="退出登录"> </form> </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>登录失败界面no.jsp</title> </head> <body>登录失败! </body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>退出界面tui.jsp</title> </head> <body> <% session.invalidate(); response.setHeader("refresh", "0;url=index.jsp"); %> </body> </html>
2..
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <title>My JSP 'main.jsp' starting page</title> </head> <body> <h1>登陆成功!</h1> <% String uname = (String) session.getAttribute("uname"); if (uname == null) response.sendRedirect("login.jsp"); %> <form action="show.jsp" method="post"> 商品:<br> <br> 草莓 9.30<input type="checkbox" name="item" value="草莓">加入购物车 <br> 梨 4.25 <input type="checkbox" name="item" value="梨"> 加入购物车 <br> 香蕉 3.30<input type="checkbox" name="item" value="香蕉"> 加入购物车<br><br> <input type="submit" value="加入购物车"> </form> <form name="form1" action="logout.jsp" method="post"> <input type="submit" value="退出登录"> </form> </body></html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <title>My JSP 'show.jsp' starting page</title> </head> <body> <% request.setCharacterEncoding("utf-8"); String itemName[]=request.getParameterValues("item"); if(itemName==null){ out.print("未添加购物车"); } else{ for(int i=0;i<itemName.length;i++){ out.print("("+(i+1)+")"+itemName[i]+"<br>"); } } %> </body></html>