【導(dǎo)讀】Java腳本語言——server-sideJavaScript和微軟的ActiveServer. 與SSJS和ASP相比，JSP具有更好的可擴展性，并且它不專屬于。任何一家廠商或某一特定的Web服務(wù)器。盡管JSP規(guī)范是由Sun公司制定的，Pages)之后，這種新的Web應(yīng)用開發(fā)技術(shù)很快引起了人們的關(guān)注。度動態(tài)的Web應(yīng)用提供了一個獨特的開發(fā)環(huán)境。按照Sun的說法，JSP能夠適。應(yīng)市場上包括ApacheWebServer、在內(nèi)的85%的服務(wù)器產(chǎn)品。概述JSP是由SunMicrosystems公司倡。其強大而特別的功能。HTML代碼中混合某種程序代碼、由語言引擎解釋執(zhí)行程序代碼的能力。們簡單的對它進行介紹。然而，這種底層的等同性并。不意味著servlet和JSP頁面對于所有的情況都等同適用。力，而是二者在便利性、生產(chǎn)率和可維護性上的不同。有額外的雙引號，也沒有暗含的Java語法。2）能夠使用標(biāo)準(zhǔn)的網(wǎng)站開發(fā)工具。此處的討論并不是說人們應(yīng)該放棄使用servlet而僅僅使用JSP。解決JavaServlet的這種缺點，SUN推出了JSP。JSP的特點按照腳本語言是服務(wù)于某一個子系統(tǒng)的語言這種。過于強大了，在JSP中幾乎可以使用全部的Java類。作為一種基于文本的、以

　　

【正文】 ch the designer handed over to the implement work of their design the Web plait the one who write, make they have to double work Usually is the handicraft plait to write, because have no fit tool and can carry the script and the HTML contents knot to the server to put together. Chien but speech, apply the plexity of the procedure along with the Web to promote continuously, the development method that take page as the center limits sex to bee to get up obviously. At the same time, the people always at look for the better method of build up the Web application procedure, the module spreads in customer39。s machine/ server the realm. JavaBeans and ActiveX were published the pany to expand to apply the procedure developer for Java and Windows to use to e to develop the plicated procedure quickly by the fast application procedure development( RAD) tool. These techniques make the expert in the some realm be able to write the module for the perpendicular application plait in the skill area, but the developer can go fetch the usage directly but need not control the expertise of this realm. Be a kind of take module as the central development terrace, the JSP appeared. It with the JavaBeans and Enterprise JavaBeans( EJB) module includes the model of the business and the data logic for foundation, provide a great deal of label and a script terraces to use to e to show in the HTML page from the contents of JavaBeans creation or send a present in return. Because of the property that regards the module as the center of the JSP, it can drive Java and not the developer of Java uses equally. Not the developer of Java can pass the JSP label( Tags) to use the JavaBeans that the deluxe developer of Java establish. The developer of Java not only can establish and use the JavaBeans, but also can use the language of Java to e to control more accurately in the JSP page according to the expression logic of the first floor JavaBeans. See now how JSP is handle claim of HTTP. In basic claim model, a claim directly was send to JSP page in. The code of JSP controls to carry on hour of the logic processing and module of JavaBeanses39。 hand over with each other, and the manifestation result in dynamic state bornly, mixing with the HTML page of the static state HTML code. The Beans can be JavaBeans or module of EJBs. Moreover, the more plicated claim model can see make from is request other JSP pages of the page call sign or Java Servlets. The engine of JSP wants to chase the code of Java that the label of JSP, code of Java in the JSP page even all converts into the big piece together with the static state HTML contents actually. These codes piece was anized the Java Servlet that customer can not see to go to by the engine of JSP, then the Servlet edits and translate them automatically byte code of Java. Thus, the visitant that is the website requests a JSP page, under the condition of it is not knowing, an already born, the Servlet actual full general that prepared to edit and translate pletes all works, very concealment but again and efficiently. The Servlet is to edit and translate of, so the code of JSP in the web page does not need when the every time requests that page is explain. The engine of JSP need to be edit and translate after Servlet the code end is modify only once, then this Servlet that editted and translate can be carry out. The in view of the fact JSP engine auto is born to edit and translate the Servlet also, need not procedure member begins to edit and translate the code, so the JSP can bring vivid sex that function and fast developments need that you are efficiently. Compared with the traditional CGI, the JSP has the equal advantage. First, on the speed, the traditional procedure of CGI needs to use the standard importation of the system to output the equipments to carry out the dynamic state web page born, but the JSP is direct is mutually the connection with server. And say for the CGI, each interview needs to add to add a progress to handle, the progress build up and destroy by burning constantly and will be a not small burden for calculator of be the server of Web. The next in order, the JSP is specialized to develop but design for the Web of, its purpose is for building up according to the Web applied procedure, included the norm and the tool of a the whole set. Use the technique of JSP can bine a lot of JSP pages to bee a Web application procedure very expediently.