【導讀】很快引起了人們的關注。JSP為創(chuàng)建高度動態(tài)的Web應用提供了一個獨特的開發(fā)。按照Sun的說法，JSP能夠適應市場上包括ApacheWebServer、在。內的85%的服務器產品。展仍舊很有必要。JSP與Microsoft的ASP技術非常相似。某種程序代碼、由語言引擎解釋執(zhí)行程序代碼的能力。HTML代碼主要負責描述信息的顯示樣式，而程序代碼則用來描述處理邏輯。程序代碼的執(zhí)行結果被重新嵌入到HTML代碼中，然后一。起發(fā)送給瀏覽器。要任何附加的軟件支持。者最明顯的區(qū)別。此外，ASP與JSP還有一個更為本質的區(qū)別：兩種語言引擎用。譯操作僅在對JSP頁面的第一次請求時發(fā)生。量可供修改的示例。安裝JSWDK之后，只需執(zhí)行startserver命令即可啟動服務。所有示例的源代碼均通過一個單獨的“examples”頁面提供。JSP聲明可以看成是定義類這一層次的變量和方法的。JavaServlet提供了一個在多個請求之間持續(xù)有效的會話對象，該對象允許用。這個對象在第一個JSP頁面被裝載時自動創(chuàng)建，并被關聯。第一個頁面（）僅包含一個要求輸入用戶名字的HTML表單，

　　

【正文】 g name = (String) (thename)。 % Your name is： %= name % P Your favorite food is： %= food % /BODY /HTML 3. Citing JavaBean ponents Based on a Java JavaBean is a kind of software ponent. In Web applications for the JSP integrated JavaBean ponent provides the perfect support. This support can not only shorten time (can use directly by test and trustworthy of existing ponents, to avoid the repeated development), but also for the JSP application has brought more scalability. JavaBean ponents can be used to execute plex puting tasks, or responsible and database of interaction and data extraction, etc. If we have three JavaBean, they respectively display news, stock price, weather conditions function, they create contain all these three functions of Web page only need to instantiate the three Bean, using HTML forms will be they in turn positioning is ok. To illustrate the JSP JavaBean application environment, we created a name of TaxRate Bean. It has two attributes that our Product (products) and Rate (tax). Two set separately used to set the two properties, and two the get method is used to extract the two attributes. In practical applications, this kind of Bean shall generally be from a database abstraction tax rate, here we simplify the value of this process, allows any setting rate. Below is the Bean code list: package tax。 public class TaxRate { String Product。 double Rate。 public TaxRate() { = A001。 = 5。 12 } public void setProduct (String ProductName) { = ProductName。 } public String getProduct() { return ()。 } public void setRate (double rateValue) { = rateValue。 } public double getRate () { return ()。 } } In applying the above JSP page Bean will use markup. UseBean JSP: Depend on specific use JSP engine is different, where configuration, and how to configure Bean approach can be slightly different. This paper will the Bean, scaleup files in c: JSWDK examplesWEB INFjspeans ax directory, here is a special store the tax Bean directory. Below is an example of applying the above Bean page: HTML BODY %@ page language=java % jsp:useBean id=taxbean scope=application class= / % (A002)。 (17)。 % Method of use 1： p product: %= () % br Tax rates: %= () % p % (A003)。 (3)。 % b Method of use 2 ： /b p product : jsp:getProperty name=taxbean property=Product / br Tax rates : jsp:getProperty name=taxbean property=Rate / /BODY /HTML In jsp:useBean markup within useBean JSP: defines several attribute, including id is whole the JSP page within the scope of the logo, Bean Bean property defines the attributes of the survival time, scaleup illustrate the Bean class files (from the package 13 name start). This not only the JSP page using Bean of set and the get method Settings and extraction attribute value, also used to extract Bean attribute value the second method, which USES markup. GetProperty JSP: The getProperty JSP: name attribute namely for JSP: useBean defined in the Bean id, its property attribute specified is the target attribute names. Facts prove that Java Servlet is one kind of development the Web application ideal framework. The JSP with Servlet technology as the foundation, and in many ways improved. The JSP page looks like ordinary HTML pages, but allows embedded code execution, at this point, it and the ASP technology are very similar. Using crossplatform running JavaBean ponents, JSP for separation treatments logic and display provides excellent solutions. The JSP will bee the ASP technology contender.