外文翻译---JSP技术与主流JAVA+EE开源框架(SSH)技术简介

外文翻译---J S P技术与主流J A V A+E E开源

框架(S S H)技术简介-CAL-FENGHAI-(2020YEAR-YICAI)_JINGBIAN

中文3170字

本科毕业设计外文翻译

JSP technology and mainstream open-source framework for JAVA EE

院（系、部）名称：工商管理学院

专业名称：信息管理与信息系统

学生姓名：

学生学号：

指导教师：

2012年 5月 18日

JSP technology and mainstream open-source framework for

JAVAEE

1.JSP Profile

JSP (Java Server Pages) is initiated by Sun Microsystems, Inc., with many companies to participate in the establishment of a dynamic web page technical standards. JSP technology somewhat similar to ASP technology, it is in the traditional HTML web page document (*.htm, *. html) to insert the Java programming paragraph (Scriptlet) and JSP tag (tag), thus JSP documents (*.jsp). Using JSP development of the Web application is cross-platform that can run on Linux, is also available for other operating systems.

JSP technology to use the Java programming language prepared by the category of XML tags and scriptlets, to produce dynamic pages package processing logic. Page also visit by tags and scriptlets exist in the services side of the resources of logic. JSP page logic and web page design and display separation, support reusable component-based design, Web-based application development is rapid and easy.

Web server in the face of visits JSP page request, the first implementation of the procedures of, and then together with the results of the implementation of JSP documents in HTML code with the return to the customer. Insert the Java programming operation of the database can be re-oriented websites, in order to achieve the establishment of dynamic pages needed to function.JSP and Java Servlet, is in the implementation of the server, usually returned to the client is an HTML text, as long as the client browser will be able to visit.

JSP 1.0 specification of the final version is launched in September 1999, December has introduced 1.1 specifications. At present relatively new is JSP1.2 norms, JSP2.0 norms of the draft has also been introduced.

JSP pages from HTML code and Java code embedded in one of the components. The server was in the pages of client requests after the Java code and then will generate the HTML pages to return to the client browser. Java Servlet JSP is the technical foundation and large-scale Web application development needs of Java Servlet and JSP support to complete. JSP with the Java technology easy to use, fully object-oriented, and a platform-independent and secure mainly for all the characteristics of the Internet. JSP technology strength: (1) time to prepare, run everywhere. At this point Java better than PHP, in addition to systems, the code not

to make any changes.(2) the multi-platform support. Basically on all platforms of any development environment, in any environment for deployment in any environment in the expansion. Compared ASP / PHP limitations are obvious. (3) a strong scalability. From only a small Jar documents can run Servlet / JSP, to the multiple servers clustering and load balancing, to multiple Application for transaction processing, information processing, a server to numerous servers, Java shows a tremendous Vitality. (4) diver sification and powerful development tools support. This is similar to the ASP, Java already have many very good development tools, and many can be free, and many of them have been able to run on a variety of platforms under. JSP technology vulnerable：(1) and the same ASP, Java is the advantage of some of its fatal problem. It is precisely because in order to cross-platform functionality, in order to extreme stretching capacity, greatly increasing the complexity of the product. (2) Java's speed is class to complete the permanent memory, so in some cases by the use of memory compared to the number of users is indeed a "minimum cost performance." On the other hand, it also needs disk space to store a series of. Java documents and. Class, as well as the corresponding versions of documents.

2. J2EE Development Framework

Java2 Enterprise Edition middleware unified ideology played a significant role. For example, J2EE for distributed transaction management, directory services and messaging services provide a standard programming interface. J2EE-based -

Java2Standard Edition (J2SE), successfully access for Java provides a standard relational database.

But, as this article "J2EE programming of the lack of support", as mentioned,

J2EEplatform does not provide a satisfactory application programming model. Sun and some of the major application server vendors wanted to use the development tools to reduce the complexity of J2EE development, but these tools are no other outstanding JAVA development tools, which have advanced refactoring tools, and. NET platform compared, J2EE tool support appeared to be very inferior.

Many J2EE development tools automatically generate the code for the same complex as the tools themselves. In many small-scale J2EE open source community developers chose another way of development - some can be difficult to reduce the development of J2EE development framework, the more popular such as: Struts, Hibernate, and Spring Framework, J2EE project types in many of today they play an important the role.

2.1 Spring Framework

The Spring Framework is an open source application framework for the Java platform.

The first version was written by Rod Johnson who released the framework with the publication of his book Expert One-on-One J2EE Design and Development in October 2002. The framework was first released under the Apache 2.0 license in June 2003. The first milestone release, 1.0, was released in March 2004, with further milestone releases in September 2004 and March 2005. The Spring 1.2.6 framework won a Jolt productivity award and a JAX Innovation Award in 2006. Spring 2.0 was released in October 2006, and Spring 2.5 in November 2007. In December 2009 version 3.0 GA was released. The current version is 3.0.5.

The core features of the Spring Framework can be used by any Java application, but there are extensions for building web applications on top of the Java EE platform. Although the Spring Framework does not impose any specific programming model, it has become popular in the Java community as an alternative to, replacement for, or even addition to the Enterprise JavaBean (EJB) model.

Modules The Spring Framework comprises several modules that provide a range of services:

Inversion of Control container: configuration of application components and lifecycle management of Java objects

Aspect-oriented programming: enables implementation of cross-cutting routines

Data access: working with relational database management systems on the Java platform using JDBC and object-relational mapping tools

Transaction management: unifies several transaction management APIs and coordinates transactions for Java objects

Model-view-controller: an HTTP and Servlet-based framework providing hooks for extension and customization

Remote Access framework: configurative RPC-style export and import of Java objects over networks supporting RMI, CORBA and HTTP-based protocols including web services (SOAP)

Convention-over-configuration: a rapid application development solution for Spring-based enterprise applications is offered in the Spring model.

Batch processing: a framework for high-volume processing featuring reusable functions including logging/tracing, transaction management, job processing statistics, job restart, skip, and resource management

Authentication and authorization: configurable security processes that support a range of standards, protocols, tools and practices via the Spring Security sub-project (formerly Acegi Security System for Spring).

Remote Management: configurative exposure and management of Java objects for local or remote configuration via JMX

Messaging: configurative registration of message listener objects for transparent message consumption from message queues via JMS, improvement of message sending over standard JMS APIs

Testing: support classes for writing unit tests and integration tests

Inversion of Control container Central to the Spring Framework is its Inversion of Control container, which provides a consistent means of configuring and managing Java objects using callbacks. The container is responsible for managing object lifecycles: creating objects, calling initialization methods, and configuring objects by wiring them together.

Objects created by the container are also called Managed Objects or Beans. Typically, the container is configured by loading XML files containing Bean definitions which provide the information required to create the beans.

Objects can be obtained by means of Dependency lookup or Dependency injection. Dependency lookup is a pattern where a caller asks the container object for an object with a specific name or of a specific type. Dependency injection is a pattern where the container passes objects by name to other objects, via either constructors, properties, or factory methods.

In many cases it's not necessary to use the container when using other parts of the Spring Framework, although using it will likely make an application easier to configure and customize. The Spring container provides a consistent mechanism to configure applications and integrates with almost all Java environments, from small-scale applications to large enterprise applications.

The container can be turned into a partially-compliant EJB3 container by means of the Pitchfork project. The Spring Framework is criticized by some as not being standards compliant. However, Spring Source doesn't see EJB3 compliance as a