【正文】 s Cookie, the use of the object request getCookies () method will be implemented in all client came to an array of Cookie objects in the form of order, to meet the need to remove the Cookie object, it is necessary to pare an array cycle Each target keywords. 。s machine. If you use IE browser to visit Web, you will see all stored on your hard drive on the Cookie. They are most often stored in places: c: \ windows \ cookies (in Window2021 is in the C: \ Documents and Settings \ your user name \ Cookies) Cookie is keyword key = value value to preserve the format of the record. 2. Targets the creation of a Cookie, Cookie object called the constructor can create a Cookie. Cookie object constructor has two string parameters: Cookie Cookie name and value. Cookie c = new Cookie ( username, john)。s hard drive section of the text. Cookie allow a Web site on the user39。s request dynamic response to the client sent the data. 三 . session object 1. What is the session: session object is a builtin objects JSP, it in the first JSP pages loaded automatically create, plete the conversation of management. From a customer to open a browser and connect to the server, to close the browser, leaving the end of this server, known as a conversation. When a customer visits a server, the server may be a few pages link between repeatedly, repeatedly refresh a page, the server should be through some kind of way to know this is the same client, which requires session object. 2. session object ID: When a customer39。 JSP Open Category: WEB, JAVA, dynamic pages, the Knowledge Network Contents ? JSP Profile ? JSP technology strength ? JSP technology vulnerable ? JSP six builtin objects: ? JSP dynamic web site development and technology JSP Profile JSP (JavaServer Pages) is initiated by Sun Microsystems, Inc., with many panies to participate in the establishment of a dynamic web page technical standards. JSP technology somewhat similar to ASP technology, it is in the traditional HTML web page document (*. htm, *. html) to insert the Java programming paragraph (Scriptlet) and JSP tag (tag), thus JSP documents (*. jsp). Using JSP development of the Web application is crossplatform that can run on Linux, is also available for other operating systems. JSP technology to use the Java programming language prepared by the category of XML tags and scriptlets, to produce dynamic pages package processing logic. Page also visit by tags and scriptlets exist in the services side of the resources of logic. JSP page logic and web page design and display separation, support reusable ponentbased design, Webbased application development is rapid and easy. Web server in the face of visits JSP page request, the first implementation of the procedures of, and then together with the results of the implementation of JSP documents in HTML code with the return to the customer. Insert the Java programming operation of the database can be reoriented websites, in order to achieve the establishment of dynamic pages needed to function. JSP and Java Servlet, is in the implementation of the server, usually returned to the client is an HTML text, as long as the client browser will be able to visit. JSP specification of the final version is launched in September 1999, December has introduced specifications. At present relatively new is norms, norms of the draft has also been introduced. JSP pages from HTML code and Java code embedded in one of the ponents. The server was in the pages of client requests after the Java code and then will generate the HTML pages to return to the client browser. Java Servlet JSP is the technical foundation and largescale Web application development needs of Java Servlet and JSP support to plete. JSP with the Java technology easy to use, fully objectoriented, and a platformindependent and secure, mainly for all the characteristics of the Inter. JSP technology strength (1) time to prepare, run everywhere. At this point Java better than PHP, in addition to systems, the code not to make any changes. (2) the multiplatform support. Basically on all platforms of any development environment, in any environment for deployment in any environment in the expansion. Compared ASP / PHP limitations are obvious. (3) a strong scalability. From only a small Jar documents can run Servlet / JSP, to the multiple servers cluster