【正文】 d probably prefer to return pure XMLpliant results, preferably in a static form. And it is in those cases that JSP technology cannot help。s the big deal? you ask. The big deal is that XML quickly is being the global standard for inter and intraapplication munication. Passing data around in an XML format lets any other application that employs basic XML datahandling facilities use your application39。 instead of the page (JSP technology) calling logic from the application, the application (Enhydra) uses methods to affect the values of the page. In the specific case of Enhydra, XMLC converts the page into a DOM tree, and uses the DOM39。s success in meeting its stated objectives is to see whether or not it is possible to achieve this goal in practice。 ()) { Actor actor = (Actor)()。ve already discussed, JSP claims to have been designed for this separation purpose, and therefore we should assume it achieves its objectives, right? Not the line between content and presentationJSP allows Java code to be inserted into the markup language page, and this rather dangerous feature allows content to be intermingled with presentation. Even worse, business logic often makes its way into JSP pages, as shown in Listing 5. class=displaycode% page import= % % page import= % % page import= % % page import= % % page import= % % page import= % % PageInfo pageInfo = (PageInfo)(PAGE_DATA) % HTML HEAD TITLE %=()% /TITLE /HEAD BODY H2 ALIGN=centerSearch Results: Actors/H2 東華理工大學(xué)畢業(yè)設(shè)計(jì) 外文翻譯 11 CENTER HR width=85% TABLE width=50% CELLPADDING=3 CELLSPACING=3 border=1 BGCOLOR=FFFFCC % // Based on user39。t usually present a vs. independenceThroughout this article, I39。s take a look at some of the vs. language lockinJSP technology locks you into a specific language. This point shouldn39。t mean you have to use it. As silly as this sounds, many developers are struggling with the JSP, or EJB, or JMS APIs, thinking if they don39。ll defer my own judgment about the goals until a later section about the problems of JSP technology. You might be a little suspicious already, however, since embedding code into a JSP page would seem to cause problems with the first goal of JSP technology, separating content from presentation. But really (ahem), I39。s features was also intentional. So JSP authors were given the option to add Java code into their an example of Java code being added to markup, the JSP snippet in Listing 4 dynamically adds rows as needed to show each item in the Vector of actors. class=displaycode% page import= % % page import= % % page import= % % page import= % % page import= % % 東華理工大學(xué)畢業(yè)設(shè)計(jì) 外文翻譯 8 PageInfo pageInfo = (PageInfo)(PAGE_DATA) Vector actors = () % HTML HEAD TITLE %=()% /TITLE /HEAD BODY H2 ALIGN=centerSearch Results: Actors/H2 CENTER HR width=85% TABLE width=50% CELLPADDING=3 CELLSPACING=3 border=1 BGCOLOR=FFFFCC % for (Iterator i = ()。s published set of goals for JSP pages. In fact, JSP design stemmed directly from the plaints of developers who were tired of typing (HTMLHEADTITLE + () + /TITLE/HEAD)。JSP39。s flexibility es into play. While it is usually simple to update the raw content being fed into the presentation layer, rarely can the graphic artists easily edit their original work. Changes to the presentation layer are mon (we39。s take a look. Segregation vs. integration The primary purpose of presentation technology is to allow a separation between content and presentation. In other words, business logic units (presumably in some programming language like C or Java) don39。s helpful to fill in some details on the situation that led to the birth of the technology. Just 10 short years ago, the term thin client was a novelty. We still lived in a world of desktop applications, powered by wimpy 286 microprocessors with 14inch monitors that we squinted at. Boy, have times changed! Now my desktop does nothing but power a Web browser, while servers from Sun, IBM, HP, Compaq, and the rest churn out putations, business logic, and content. And that little monitor? Replaced by flatscreen, plasma, whopping 21 and 25inch beauties. Why? So we can see the intricate and plex HTML displays that serve as a frontend to these powerful applications. No longer does a clunky interface suffice。 raw Web content into content wrapped in an attractive presentation layer. JavaServer Pages (JSP) technology, Sun39。 separation of logic from display。東華理工大學(xué)畢業(yè)設(shè)計(jì) 外文翻譯 1 JSP Technology（ 外文原文 ） JSP (JavaServer Pages) is a kind of based on Java script technology. In many of the advantages of JSP, one of which is it can the HTML code from Web pages in the business logic of the effectively separated. With JSP visit reusable ponents, such as Servlet, JavaBean and based on Java Web applications. JSP also support in Web page direct embedded Java code. The two methods can visit JSP files: browser to send files request, sent to the JSP Servlet request. JavaServer Pages technology is an extension of the Java Servlet technology. Servlets are platformindependent, serverside modules that fit seamlessly into a Web server framework and can be used to extend the capabilities of a Web server with minimal overhead, maintenance, and support. Unlike other scripting languages, servlets involve no platformspecific consideration or modifications。 ease of administration。s presentation model and part of the J2EE platform, has received significant attention. There are both advantages and disadvantages