Jsp Study Notes (1 )! ------- Understand Jsp technology!

1. Using jsp (preferred for SUN Enterprise Applications) technology, a user can send an http request to an executable program rather than a static html file. The server will immediately run this restricted program to respond to user input, return the processing result to the client, or change the data records. This model enables effective interaction between the server and the customer.
2. The principle of jsp (preferred for SUN enterprise-level applications) technology is: Using mssql (a powerful database platform on WINDOWS), Oracle (a large-scale website database platform) massive database systems, such as data warehouses, use Servlet's high-performance server programs as the back-end Master Control Program, jsp (preferred for SUN Enterprise Applications) programs run on the front-end, Servlet accepts user input, call different jsp (preferred for SUN Enterprise Applications) programs to report information to the client. Jsp (preferred for SUN Enterprise Applications)/Servlet transmits data on the server and client through Http connections, jsp (preferred for SUN Enterprise Applications)/Servlet does not use Jdbc technology to directly access the database, instead, the parameters are passed to the prepared JavaBeans and EJB components for database operations. In this way, the data inside the system is encapsulated and protected, the JavaBeans and EJB components can also distribute transactions to another component for processing. Finally, the results returned by the database are
Jsp (the preferred choice for SUN enterprise-level applications)/Servlet is sent to the front-end for display. This mode is easy to implement distributed network computing. Many enterprise applications can be made into javaBeans components and can be reused, in this way, some key operations are encapsulated, which facilitates developers and improves development speed, website scalability, and security.