-计算机专业开题报告外文文献及中文翻译.doc

1、-计算机专业开题报告外文文献及中文翻译DEVELOPMENT HISTORY OF JSPBy:Kathy Sierra and Bert BatesSource: Servlet&JSPThe Java Server Pages( JSP)is a kind of according to web of the script plait distance technique, similar carries the script language of Java in the server of the scape pany of server- side JavaScript( SSJS)

2、and the Active Server Pages(ASP)of the Microsoft、 JSP pares the SSJS and ASP to have better can expand sex, and it is no more exclusive than any factory or some one particular server of Web、 Though the norm of JSP is to be draw up by the Sun pany of, any factory can carry out the JSP on own system、

3、The After Sun release the JS P( the Java Server Pages)formally, the this kind of new Web application development technique very quickly caused the peoples concern、 JSP provided a special development environment for the Web application that establishes the high dynamic state、 According to the Sun par

4、lance, the JSP can adapt to include the Apache WebServer, IIS4、0 on the market at inside of85% server product、This chapter will introduce the related knowledge of JSP and Databases, and JavaBean related contents, is all certainly rougher introduction among them basic contents, say perhaps to is a Gu

5、ide only, if the reader needs the more detailed information, pleasing the book of consult the homologous JSP、1、1 GENER ALIZEThe JSP(Java Server Pages)is from the pany of Sun Microsystems initiate, the many panies the participate to the build up the together of the a kind the of dynamic the state web

6、 the page technique standard, the it have the it in the construction the of the dynamic state the web page the strong but the do not the especially of the function、 JSP and the technique of ASP of the Microsoft is very alike、 Both all provide the ability that mixes with a certain procedure code and

7、is explain by the language engine to carry out the procedure code in the code of 、 Underneath we are simple of carry on the introduction to it、JSP pages are translated into servlets、 So, fundamentally, any task JSP pages can perform could also be acplished by servlets、 However, this underlying equiv

8、alence does not mean that servlets and JSP pages are equally appropriate in all scenarios、 The issue is not the power of the technology, it is the convenience, productivity, and maintainability of one or the other、 After all, anything you can do on a particular puter platform in the Java programming

9、 language you could also do in assembly language、 But it still matters which you choose、JSP provides the following benefits over servlets alone: It is easier to write and maintain the 、 Your static code is ordinary : no extra backslashes, no double es, and no lurking Java syntax、 You can use standar

10、d Web-site development tools、 Even tools that know nothing about JSP can be used because they simply ignore the JSP tags、 You can divide up your development team、 The Java programmers can work on the dynamic code、 The Web developers can concentrate on the presentation layer、 On large projects, this

11、division is very important、 Depending on the size of your team and the plexity of your project, you can enforce a weaker or stronger separation between the static and the dynamic content、Now, this discussion is not to say that you should stop using servlets and use only JSP instead、 By no means、 Alm

12、ost all projects will use both、 For some requests in your project, you will use servlets、 For others, you will use JSP、 For still others, you will bine them with the MVC architecture 、 You want the apGFDGpropriate tool for the job, and servlets, by themselves, do not plete your toolkit、1、2 SOURCE OF

13、 JSPThe technique of JSP of the pany of Sun, making the page of Web develop the personnel can use the perhaps marking of XML to design to turn the end page with format、 Use the perhaps small script future life of marking of JSP bees the dynamic state on the page contents、( the contents changes accor

14、ding to the claim of)The Java Servlet is a technical foundation of JSP, and the large Web applies the development of the procedure to need the Java Servlet to match with with the JSP and then can plete, this name of Servlet es from the Applet, the local translation method of now is a lot of, this bo

15、ok in order not to misconstruction, decide the direct adoption Servlet but dont do any translation, if reader would like to, can call it as small service procedure、 The Servlet is similar to traditional CGI, ISAPI, NSAPI etc、 Web procedure development the function of the tool in fact, at use the Jav

16、a Servlet hereafter, the customer need not use again the lowly method of CGI of efficiency, also need not use only the ability e to born page of Web of dynamic state in the method of API that a certain fixed Web server terrace circulate、 Many servers of Web all support the Servlet, even not support

17、the Servlet server of Web directly and can also pass the additional applied server and the mold pieces to support the Servlet、 Receive benefit in the characteristic of the Java cross-platform, the Servlet is also a terrace irrelevant, actually, as long as match the norm of Java Servlet, the Servlet

18、is plete to have nothing to do with terrace and is to have nothing to do with server of Web、 Because the Java Servlet is internal to provide the service by the line distance, need not start a progress to the each claimses, and make use of the multi-threading mechanism can at the same time for severa

19、l claim service, therefore the efficiency of Java Servlet is very high、But the Java Servlet also is not to has no weakness, similar to traditional CGI, ISAPI, the NSAPI method, the Java Servlet is to make use of to output the language sentence to carry out the dynamic state web page of, if develop t

20、he whole website with the Java Servlet, the integration process of the dynamic state part and the static state page is an evil-foreboding dream simply、 For solving this kind of weakness of the Java Servlet, the SUN released the JSP、A number of years ago, Marty was invited to attend a small20-person

21、industry roundtable discussion on software technology、 Sitting in the seat next to Marty was James Gosling, inventor of the Java programming language、 Sitting several seats away was a high-level manager from a very large software pany in Redmond, Washington、 During the discussion, the moderator brou

22、ght up the subject of Jini, which at that time was a new Java technology、 The moderator asked the manager what he thought of it, and the manager responded that it was too early to tell, but that it seemed to be an excellent idea、 He went on to say that they would keep an eye on it, and if it seemed

23、to be catching on, they would follow his panys usual embrace and extend strategy、 At this point, Gosling lightheartedly interjected You mean disgrace and distend、 Now, the grievance that Gosling was airing was that he felt that this pany would take technology from other panies and suborn it for thei

24、r own purposes、 But guess what? The shoe is on the other foot here、 The Java munity did not invent the idea of designing pages as a mixture of static and dynamic code marked with special tags、 For exle, Cold Fusion did it years earlier、 Even ASP (a product from the very software pany of the aforemen

25、tioned manager)popularized this approach before JSP came along and decided to jump on the bandwagon、 In fact, JSP not only adopted the general idea, it even used many of the same special tags as ASP did、The JSP is an establishment at the model of Java servlets on of the expression layer technique, i

26、t makes the plait write the to bee more simple、Be like the SSJS, it also allows you carry the static state contents and servers the script mix to put together the born dynamic state exportation、 JSP the script language that the Java is the tacit approval, however, be like the ASP and can use other l

27、anguages( such as JavaScript and VBScript), the norm of JSP also allows to use other languages、1、3JSP CHARACTERISTICSIs a service according to the script language in some one language of the statures system this kind of discuss, the JSP should be see make is a kind of script language、 However, be a

28、kind of script language, the JSP seemed to be too strong again, almost can use all Javas in the JSP、Be a kind of according to text originally of, take manifestation as the central development technique, the JSP provided all advantages of the Java Servlet, and, when bine with a JavaBeans together, pr

29、oviding a kind of make contents and manifestation that simple way that logic separate、 Separate the contents and advantage of logical manifestations is, the personnel who renews the page external appearance need not know the code of Java, and renew the JavaBeans personnel also need not be design the

30、 web page of expert in hand, can use to take the page of JavaBeans JSP to define the template of Web, to build up a from have the alike external appearance of the website that page constitute、 JavaBeans pletes the data to provide, having no code of Java in the template thus, this means that these te

31、mplates can be written the personnel by a plait to support、 Certainly, can also make use of the Java Servlet to control the logic of the website, adjust through the Java Servlet to use the way of the document of JSP to separate website of logic and contents、Generally speaking, in actual engine of JS

32、P, the page of JSP is the edit and translate type while carry out, not explain the type of、 Explain the dynamic state web page development tool of the type, such as ASP, PHP3 etc、, because speed etc、 reason, have already cant satisfy current the large electronic merce needs appliedly, traditional de

33、velopment techniques are all at to edit and translate the executive way change, such as the ASP ASP+;PHP3 PHP4、In the JSP norm book, did not request the procedure in the JSP code part( be called the Scriptlet)and must write with the Java definitely、 Actually, have some engines of JSP are adoptive ot

34、her script languages such as the EMAC- Script, etc、, but actually this a few script languages also are to set up on the Java, edit and translate for the Servlet to carry out of、 Write according to the norm of JSP, have no Scriptlet of relation with Java also is can of, however, mainly lie in the abi

35、lity and JavaBeans, the Enterprise JavaBeanses because of the JSP strong function to work together, so even is the Scriptlet part not to use the Java, edit and translate of performance code also should is related with Java、1、4JSP MECHANISMTo prehend the JSP how unite the technical advantage that abo

36、ve various speak of, e to carry out various result easily, the customer must understand the differentiation of the module develops for the web page of the center and the page develops for the web page of the center first、 The SSJS and ASP are all in several year ago to release, the work of that time

37、 is still very young, no one knows to still have in addition to making all business, datas and the expression logic enter the original web page entirely heap what better solve the method、 This kind of model that take page as the center studies and gets the very fast development easily、 However, alon

38、g with change of time, the people know that this kind of method is unwell in set up large, the Web that can upgrade applies the procedure、 The expression logic write in the script environment was lock in the page, only passing to shear to slice and glue to stick then can drive heavy use、 Express the

39、 logic to usually mix together with business and the data logics, when this makes be the procedure member to try to change an external appearance that applies the procedure but do not want to break with its llied business logic, apply the procedure of maintenance be like to walk the similar difficul

40、ty on the eggshell、 In fact in the business enterprise, heavy use the application of the module already through very mature, no one would like to rewrite those logics for their applied procedure、 and sketch the designer handed over to the implement work of their design the Web plait the one who writ

41、e, 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 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 t

42、hat 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 customers machine/ server the realm、 JavaBeans and ActiveX were published the pany to expand to apply

43、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 th

44、e 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,

45、 provide a great deal of label and a script terraces to use to e to show in the 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 de

46、veloper 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 o

47、f the first floor JavaBeans、 See now how JSP is handle claim of 、 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 JavaBeanses hand over with each other, and the manifestation result in dynamic state bornl

48、y, mixing with the page of the static state 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 contents actually、 These codes piece was organized 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