JSP（java server page）是由SunMicrosyst

JSP (java server page) is a dynamic technical standard established in 1999 by SunMicrosystems, which was jointly established by a number of companies. JSP is a new generation of dynamic content programming technology, which inherits the "write once, run anywhere" feature of Java technology, separating the development and maintenance of developers from the platform [3]. By the technologies of HTML, DHTML and XML, etc., the information-rich and dynamic Web pages are formed. It makes it easy and fast for web developers to build web platforms and build powerful web sites. JSP can separate the user interface from the content hierarchy, allowing Web developers to avoid modifying the underlying dynamic content when modifying the overall layout. <br>The Java program segment inserted into JSP can be operated. When a JSP page on the server is executed for the first time, the JSP engine on the server first translates the JSP page file into a Java file, and then compiles the Java file to generate bytecode The file, and then respond to the client's request by executing the bytecode file, and when the JSP is requested to be executed again, the JSP engine will directly execute the bytecode file to respond to the client, which is also a reason why JSP is faster than ASP. In addition, JSP has made improvements in many other aspects. It has the advantages of separating dynamic pages from static pages, being able to escape the constraints of the hardware platform, and running after compilation. It completely overcomes the shortcomings of ASP script-level execution.

JSP（java server page）是由SunMicrosystems公司倡导，多家公司共同参与合作于1999年建立的一种动态技术标准。JSP是新一代的动态内容编程技术，它继承Java技术的“一次编写，随处运行”的特性，将开发人员的开发和维护与平台相分离[3]。由HTML，DHTML和XML等技术，组成了信息丰富动态的Web页面。它使得Web开发人员搭建网络平台变得简单快捷，建立了功能强大的Web网站。JSP可以把用户界面从内容层次中分离出来，使得Web开发人员修改整体布局的时候避开了对底层动态内容的修改。<br>插入JSP的Java程序段可以操作当服务器上的一个JSP 页面被第一次请求执行时，服务器上的JSP 引擎首先将JSP 页面文件转译成一个Java 文件，再将这个Java文件编译生成字节码文件，然后通过执行字节码文件响应客户的请求，而当这个JSP再次被请求执行时，JSP引擎将直接执行这个字节码文件来响应客户，这也是JSP比ASP 速度快的一个原因。另外，JSP又在其它许多方面做了改进，具有动态页面与静态页面相分离，能够脱离硬件平台的束缚，以及编译后运行等优点，完全克服了ASP的脚本级执行的缺点。

JSP (Java server page) is a dynamic technical standard initiated by Sun Microsystems and established in 1999 by many companies. JSP is a new generation of dynamic content programming technology. It inherits the characteristics of "write once, run anywhere" of Java technology, and separates the development and maintenance of developers from the platform [3]. It consists of HTML, DHTML, XML and other technologies to form a dynamic web page with rich information. It makes it easy for web developers to build a network platform and build a powerful web site. JSP can separate the user interface from the content level, which makes web developers avoid the modification of the underlying dynamic content when modifying the overall layout.<br>When a JSP page on the server is requested to execute for the first time, the JSP engine on the server first translates the JSP page file into Java File, and then compile the java file to generate a bytecode file, and then respond to the customer's request by executing the bytecode file. When the JSP is requested to execute again, the JSP engine will directly execute the bytecode file to respond to the customer, which is one of the reasons why JSP is faster than ASP. In addition, JSP has been improved in many other aspects. It has the advantages of separating dynamic page from static page, breaking away from the shackles of hardware platform, and running after compilation. It completely overcomes the shortcomings of ASP script level execution.