Jspinit () {}: this method is called when the JSP page is initialized, and this method is only executed once during initialization, therefore, the user performs initialization parameter configuration and other one-time work here, which is created by the author.
Jspdestroy () {}: this method is called when the JSP page is disabled for some reason. This method was created by the author.
Jspservice () {}: the JSP page processing method automatically created by the JSP Container. It is created by the JSP Container.
To be accurate,JSPThe three internal methods, namely jspinit (), _ jspservice (), and jspdestroy (), can be defined by the author in jspinit () and jspdestroy, the _ jspservice () is defined by the JSP Container according to the content of the jsp pge and cannot be defined by the author.
Full text reading:Http://www.javah.net/JSP_JSF/20070428/516.html