method                                                                                                     no. traversal steps        no. intersection tests baseline :                                                                                  …

方法一:网址重写 通过在url地址后面添加若干的token作为查询字符串来实现.token的值一般为 键=值 url?key1=value1&key2=value2&...&keyn=valuen url与token之间需要用?分开,两个token之间则是需要用一个&符号隔开. 此方法适用于token不需要在多个页面中使用时使用. 缺点是 a.在某些浏览器当中url长度有限制 b.url中的信息是可见的,安全性差 c.某些字符需要进行编码 package com.Sessi…

package app02a;import java.io.IOException;import java.io.PrintWriter;import java.util.ArrayList;import java.util.List;import javax.servlet.ServletException;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import javax.…

会话可以简单的理解为客户端用户打开一个浏览器,点击多个超链接,访问服务器多个web资源,然后关闭浏览器的整个过程称为一个会话.即一个客户端用户和服务器端进行通讯的过程,也是客户端和服务器端之间的数据传输过程. HTTP协议的无状态性导致web服务器无法区分一个HTTP请求是否为第一次访问,因此需要程序必须能管理会话,并为每个用户保存其与服务器交互过程中产生的数据. 会话管理就是管理浏览器客户端和服务器端之间会话过程中产生的数据. Servlet有4中不同的状态保持技术: -- URL重写(tok…

CHAPTER 25 The Greatest Show on Earth 第25章 地球上最壮观的演出 Go for a walk in the countryside and you will find yourself among trees, flowers, mammals, birds and insects that belong in your part of the world. Go to a zoo and you will find exotic plants and a…

Delphi for Android (aka Delphi XE5 aka RAD Studio XE5) has appeared   Blimey, that took me by surprise (again)! I figured it was coming fairly soon, but I didn’t realise quite that soon. Anyway, Delphi XE5 is here (as is RAD Studio XE5 and siblings),…

<span style="font-size:18px;">/** * Top10 * author:杨鑫 */ package servlet; import java.io.IOException; import java.io.PrintWriter; import java.util.ArrayList; import java.util.List; import javax.servlet.ServletConfig; import javax.servlet.S…

CHAPTER 24 History of Our Planet 第24章 我们行星的历史 Uncovering the bones of ancient beasts is only part of the story. Walking in the country, you must have noticed that a valley often has a river or stream running down the middle of it. Hills and mountains…

Astronaut Sounds Alarm on Asteroids If a big asteroid with Earth's name on it were to reach us unimpeded, well, we could go the way of the dinosaurs. So a group of astronauts is advising the U.N. on a plan to protect the planet.This is taking respons…

很高兴看到有这么多人想了解我们的体育设施.It's good to see that there are so many people wanting to find out about our sports facilities.这所大学的所有学生都有资格成为体育中心的成员,年费9.50英镑. All students of the college are entitled to become members of the Sports Centre, for an annual fee of…