Comparison between dynamic web page creation technology JSP and ASP

Comparison between dynamic web page creation technology JSP and ASP
In general, ever pagestm (JSP) and Microsoft's Active sever pages (ASP) have many technical similarities. Both of them provide technical environment support for dynamic interaction of Web Pages Based on Web applications. To the same extent, both of them can provide developers with the technology to implement logical separation of Application Programming and built-in component design web pages. Both of them can replace CGI to make website construction and development easier and quicker.
Although the ever Pages technology is similar to Microsoft's Active sever pages in many aspects, there are still many differences. The most fundamental difference is: the two come from different technical specifications, and their implementation basis: the requirements for Web server platforms are different.
I. JSP technology: open technology
There are obvious differences between JSP and ASP technologies: developers have different methods of in-depth understanding of their respective software system designs. JSP technology is independent of each other based on the platform and server. Input support is provided by developers of a wide range of specialized tool kits, server components, and database products. In contrast, ASP mainly relies on Microsoft's technical support.
1. Platform and server independence
JSP technology is attached to one write, and then can run in any environment with a javatm syntax structure. In the past, JSP technology was attached to a single platform or developer. JSP technology can run on any web server and support a variety of Toolkit provided by a number of developers.
ASP provides client and server development components based on ActiveX control technology, so ASP technology is basically limited to Microsoft's operating system platform. ASP is mainly used in Microsoft's IIS application structure. Because ActiveX objects have platform features, ASP cannot easily work on cross-platform Web servers. Although ASP technology can obtain components and services through third-party products to implement cross-platform applications, ActiveX objects must be placed on the selected platform in advance.
2. Open Development Process and open source code
Sun uses Java Community process development JSP technology. Since 1995, Sun has used this open process method in cooperation with International Java organizations to develop and modify Java technologies and specifications. For JSP products, Sun authorizes tool providers (such as Macromedia), Alliance companies (such as Apache and Netscape), end users, collaborators, and others. Recently, Sun issued the original code of the latest version of JSP and javatm servlet (JSP 1.1, Java Servlet 2.2) to Apache, In order to closely develop JSP and Apache. Apache, sun, and many other companies and individuals have publicly established a robust consulting organization so that any company or individual can obtain information for free.
The JSP application interface (API) is undoubtedly successful and will continue to be improved as the Java Organization continues to expand and expand. On the contrary, ASP technology is only driven by Microsoft itself, and its development is based on exclusive and closed development processes.
ASP technology JSP Technology
Web Server Microsoft IIS or personal Web Server any Web Server includes Apache, Netscape, and IIS
Operating System Platform Microsoft has a vast majority of popular Windows systems, including Solaris, Microsoft Windows, Mac OS, Linux, and other UNIX platform products.
Cross-platform access requires the introduction of a third-party ASP product to support different series of computer groups in the Web Information Organization environment. This ensures that users' current investments in hardware and software and human resources are fully compatible. JSP technology provides flexibility, open Choice: You can use the tools provided by a variety of tool providers to reflect the input and configuration of industrial standards.
3. From the developer's perspective: ASP and JSP technologies allow developers to create interactive, dynamic content and application web sites by clicking components on the web page. ASP only supports the component object model com, while the components provided by JSP technology are based on the javabeanstm technology or JSP tag library. It can be seen that although there are similarities between the two, the difference is obvious.
1) JSP tag scalability
Although ASP and JSP both use tag and script technology to create dynamic web pages, JSP technology allows developers to expand JSP tags for application, JSP developers can customize tag libraries, therefore, web page makers make full use of the powerful functions of the tag technology compatible with XML, greatly reducing the dependency on the scripting language. Because of the custom tag technology, web page makers can reduce the complexity of making webpages and expanding key functions to multiple webpages.
2) cross-platform reusability of JSP
JSP developers have been paying attention to reusability during the development process. JSP components (Enterprise javabeanstm, JavaBeans, or custom JSP labels) are reusable across platforms. Enterprise JavaBeans components can access traditional databases and work on UNIX and Windows platforms in Distributed System Mode. The tag scalability of JSP technology provides developers with simple, XML-compatible interfaces, that is, the packaging function of shared web pages, to completely standardize their industry.
This component-based mode effectively improves application development efficiency, because it enables developers to quickly create template applications using quick sub-components, and then integrate some additional functions for use. Such an effective method is everywhere in JSP and can be packaged into a JavaBean or an industry-standardized JavaBean Component.
Ii. Advantages of Java
JSP technology uses Java as the scripting language, while ASP Web pages use Microsoft's vbscrip or jscrip. Java is a mature, powerful, and scalable programming language, far better than the basic-based scripting language. For example, Java is more executable than VBSCRIPT or JScript. Because they use Java technology and are compiled into Java Servlets, JSP web pages provide an interface for the Java Library Unit on the server to serve HTTP applications.
Java makes the work of developers equally easy and simple in other aspects. For example, Java can effectively prevent system crashes when ASP applications are suspected to crash on Windows NT systems. By providing a method to prevent memory leakage, Java can also be used in memory management. In addition, JSP provides a robust unexpected event processing mechanism for applications.
1. Easy to maintain
JSP-based applications are easier to maintain and manage than ASP-based applications.
The scripting language can serve small applications well, but it cannot adapt to large and complex applications. Because Java is structured, it is easier to create and maintain large, componentized applications.
The prominent component technology of JSP makes it easy to modify content without affecting the logic or modifying logic without affecting the content.
Enterprise-level JavaBeans structure integrates enterprise logic, such as database access, security, transaction integrity, and independence, that is, independent from applications.
JSP technology is an open and cross-platform structure. Therefore, Web servers, platforms, and their components can be easily upgraded or switched without affecting the basic JSP applications. This feature enables JSP to adapt to the ever-changing and evolving web applications in the real world.
ASP technology JSP Technology
Reusable, cross-platform components do not have JavaBeans enterprise-level JavaBeans, custom JSP labels
Security: prevent system crashes
No/no memory leakage protection
Script language VBScript, JScript Java
Custom labels not available/available
2. Diversity of Enterprise Products
The Java2 Platform, namely, Enterprise Edition (J2EE), is a Java structure applicable to multi-enterprise applications. As a part of J2EE, JSP web pages can access all J2EE components, including JavaBeans, enterprise-level JavaBeans, and Java Servlets. JSP web pages can be fully compiled into Servlets, so they all enjoy the flexibility and provide server-side Java applications. The content of the J2EE platform includes not only the management of complex enterprise applications, but also the transaction management and pooling resource management technologies.
JSP web pages can access standard J2EE services, including:
? Java name and Directory Interface API
? Jdbctm API (communicates with the associated database)
? Javamailtm (supports classes based on Java mail and message applications)
? Javatm Message Service
Through J2EE, JSP web pages can interact with enterprise systems in many ways. J2EE supports Java IDL and RMI-IIOP. With enterprise-level JavaBeans technical support, JSP web pages access the database through advanced object ing.
In the end, because JSP technology is a Java-based open process product, it can widely support tools provided by different providers, web servers and application services, this allows users to select the best development method, the toolkit that best suits their application development, and effectively protect users' investment in code and personnel training.
ASP technology JSP Technology
Compatible with traditional databases (COM) and JDBC APIs)
The ability to integrate data sources can work in any ODBC compliant database, can work in any ODBC compliant database, and can access the JDBC compliant Database
Component COM component JavaBeans, enterprise-level JavaBeans or extended JSP labels
Supported extension tools include: