計(jì)算機(jī)j2ee外文翻譯

1、外文原文J2EE is a completely different from the traditional application development technology infrastructure, contains many components, the major application system to simplify and standardize the development and deployment

2、, and to improve portability, security and the value of reuse. J2EE core is a group of technical specifications and guidelines, which contains various components, service structure and the technical level, have common st

3、andards and specifications for all to follow the structure of J2EE platform between the existence of good compatibility, addressing past use of the back-end enterprise information products can not be compatible with each

4、 other, resulting in internal or external interoperability difficult dilemma. In the J2EE framework, developers can follow normative basis, and develop enterprise-level applications, and J2EE different suppliers, with th

5、e support of different J2EE version of the proposed standards to ensure that different J2EE platform and compatibility between products. In other words, the structure of the plant-based J2EE applications can basically be

6、 deployed in different applications on the server, or the need to carry out only a small amount of code changes that can significantly improve application portability (Portability). J2EE from the Sun (SUN) vendors such a

7、s IBM and coordinated development of the industry from the technical specifications to enterprises is between enterprises JAVA computing-oriented development environment. J2EE architecture defines various kinds of compon

8、ents, such as Web Component, EJB Component… and so on, and various components can be reused (reuse), has completed the development of components, or is derived from procurement by the components of the market are further

9、 assembled into different systems. For developers, need only focus on the applications of the business logic and structure design, as for the bottom of the cumbersome procedures writing can be paired with different devel

10、opment platforms, in order to allow the application system development and deployment efficiency increased dramatically. J2EE standard is the core of Enterprise Java Beans (EJBs). EJB in accordance with the different cha

11、racteristics is currently divided into three, namely Session Bean, Entity Bean, as well as Message Driven Bean. Which Session Bean and EJB Entity Bean is the ancestor of the two EJB specifications in the EJB 1.x version

12、has been introduced there, and Message Driven Bean is emerging in the EJB 2.0 of the specifications. At present the industry many programmers, or web page design, more use of JSP / Servlet the convenience of the J2EE ser

13、ver on the further development of related applications, or integrate internal resources of all kinds. Java 2 Platform, in accordance with the different areas of application, is divided Web services are being improved con

14、tinuously, in a very intelligent and dynamic means to carry out. These flexible Web services can be understood in the context of the request, and in each specific circumstance generate dynamic results. These services are

15、 depending on the user's identity, location, as well as a request to change the reasons for the different treatment to produce unique, customizable options. This coordination mechanism for those who had only the end

16、result of interested users, it is completely transparent.This Web service followed by the XML standard things can improve communications performance. Developers will be able to use different platforms, products and stand

17、ards to achieve a number of possibilities. Through this standard, developers can build a system of Web services so that they offer the greatest ability to work together.This White Paper describes how to facilitate the us

18、e of Java and XML technology to achieve Web services architecture. It demonstrates that the Web services a key part of each and how to combine them. You will be based on XML Web services and how the structure and J2EE in

19、tegration, there is a more in-depth understanding of how we build Web services using J2EE start. This part will enable you on how to establish a Web services are an understanding.Concluded Generally speaking, in the affa

20、irs of different electronic communications and collaboration between there will be many obstacles. Disparate systems, security restrictions and the same data format, a lot of B2B system in their own fields or only formed

21、 in the customer base. Web services will change all this, so that the different communications into the affairs of each other may be, it is noteworthy that this will reduce the establishment of the commercial site develo

22、pment and maintenance costs.In the establishment of Web services, there are three major steps:1. Established client connectivity to allow Applets, Applications, business partners, browsers and PDAs using Web services. 2.

23、 Realization of Web services include workflow, data access, and data access and business logic. These features are hidden in Web services, and for the work of the client. 3. Connected back-office systems this system may

24、include one or more databases, the existing enterprise information systems, business partners or their own Web services system, as well as multiple systems to share data.You can use J2EE to achieve these three objectives

25、. J2EE development using Web services based on the following two technologies:XML technologies.In Web services, XML standard is very important. XML is a data format, it can be a coherent approach to performance data, and