摘要：今天根据我到网上查找资料，学习servlet加载。参考来自http://www.bitscn.com/pdb/java/200807/145683.htmlservlet 加载：容器的Context对象对请求路径（URL）作出处理，去掉请求URL的上下文路径后，按路径映射规则（web.xml文件）和Servlet映射路径（<url-pattern>）做匹配，如果匹配成功，则调用这个Servlet处理请求。匹配规则：请求URL精确匹配，如果成功则调用该Servlet。 匹配最长的路径前缀，以/为路径分隔符，按路径树逐级匹配，选择最长匹配的Servlet来处理。 如果前面都没有匹配成功 阅读全文

摘要：HTTP(HyperText Transfer Protocol)是一套计算机通过网络进行通信的规则。计算机专家设计出HTTP，使HTTP客户（如Web浏览器）能够从HTTP服务器(Web服务器)请求信息和服务，HTTP目前协议的版本是1.1.HTTP是一种无状态的协议，无状态是指Web浏览器和Web服务器之间不需要建立持久的连接，这意味着当一个客户端向服务器端发出请求，然后Web服务器返回响应(response)，连接就被关闭了，在服务器端不保留连接的有关信息.HTTP遵循请求(Request)/应答(Response)模型。Web浏览器向Web服务器发送请求，Web服务器处理请求并返回适当 阅读全文

摘要：A: User clicks a link that has a URL to a servlet.B: The Container "sees" that the request is for a servlet, so the container creates two objects: 1) HttpServletsResponse 2) HttpServletRequestC: The Container finds the correct servlet based on the URL in the request, creates or allocates a 阅读全文

摘要：We know it is the Container that manages and runs the servlet,but why? Is it worth the extra overhead?Communications support: The container provides an easy way for your servlets to talk to your web server. You do not have to build a ServerSocket,listen on a port, create streams,etc. The Container k 阅读全文

摘要：What happens after we type "www.baidu.com"?First the browser creates a HTTP GET request like this:GET/index.html HTTP/1.1Host:www.baidu.comUser-Agent: GoogleChrome/.............Then the HTTP GET is sent to the server,and the server finds the page index.html of baidu. Then the sever generat 阅读全文

摘要：The total amount of characters in a GET is really limited (depending on the server).If the user types ,say. along passage into a "search" into a box,the Get might not work.The data you send with the GET is appended to the URL up in the browser bar,so whatever you send is exposed.Better not 阅读全文

摘要：What`s the content of web?The web consists of gazillions of clients(using browsers like Mozilla or IE ) and servers (using web server apps like Apache) connected through wires and wireless networks.What does your web server do ?A web server takes a client request and gives something back to the clie 阅读全文

摘要：The first thing you read this book is to prepare you brain to study.The first work you need to learn this book is to install and config Tomcat.Before I have done a few projects use MyEclipse or Eclipse, In these IDE, I never think how tomcat to start by only click an button.Now without the IDE ,befo 阅读全文