JSP-based dynamic website development technology

With the development of Web technology and the arrival of the e-commerce era, people are no longer satisfied with the establishment of various websites for static information publishing. More often, they need to be able to interact with users, dynamic websites that provide services such as management and control of backend databases.
Dynamic website development technology
Early dynamic website development technology used CGI-BIN interfaces. Developers write separate programs related to interfaces and Web-based applications. The latter calls the former through the Web server. This development technology has a serious scalability problem-each new CGI program requires a new process to be added to the server. If multiple users access the program concurrently, these processes will exhaust all the available resources of the Web server until it crashes.
To overcome this drawback, Microsoft proposed the Active Server Pages (ASP) technology, which simplifies Web application development by using plug-ins and APIs. Compared with CGI, ASP has the advantage that it can contain HTML tags, directly access the database, and use infinitely expanded ActiveX controls. Therefore, it is more flexible in programming. However, this technology is basically limited to Microsoft's operating system platform. The main work environment is Microsoft's IIS application structure, therefore, ASP technology cannot easily implement cross-platform Web server program development.
Hypertext Preprocessor (Hyper Text Preprocessor) is similar to ASP in PHP dynamic website development technology. It is also a server-side scripting language embedded in HTML documents. Most of its syntax is similar to C, Java, Perl, and other languages, and forms its own unique style. With this language, Web programmers can quickly develop dynamic Web pages. PHP can run on most Unix platforms, GUN/Linux, and Microsoft Windows platforms. PHP has the following advantages: easy installation, simple learning process, convenient database connection, strong compatibility, strong scalability, and object-oriented programming. However, PHP also has some weaknesses, mainly because PHP is an interpreted language that does not support multi-threaded structures and has limited support for platforms and connected databases, especially in terms of supported standards, PHP is not suitable for some e-commerce applications.
Some other technologies, such as Java Servlets, can be used to easily compile interactive server-side code in Java. A Java Servlets is a Java-based program running on the server (unlike the Applet, which runs on the browser ). Developers write such Java Servlets to receive HTTP requests from Web browsers and dynamically generate responses (you may need to query the database to complete such requests ), then, send a response containing HTML or XML documents to the browser. This technology is very difficult for common page designers to easily master. In this way, the entire webpage must be created in Java Servlets. If developers or Web administrators want to adjust the page display, they have to edit and re-compile the Java Servlets.
Sun Microsystems Inc .) integration and balancing of existing Java programming environments (such as Java Servlets and JavaBeans) with extensive support and cooperation among Web servers, application servers, transaction systems, and development tool vendors) after supporting technologies and tools, a new method for developing Web applications-the assumerver Pages technology (JSP) is developed ). This dynamic website development technology has the following features: