触发器有哪三种类型 jsp的作用域范围有几种?

jsp的作用域范围有几种?Name scope application is valid in all applications session is valid in the current ses

jsp的作用域范围有几种?

Name scope application is valid in all applications session is valid in the current session request is valid in the current request page is valid in the current page

servlet/JSP中的session函数是通过scope的概念实现的,它分为四种类型:page is valid in the current page(只在JSP中使用)。请求在当前请求中有效。会话在当前会话中有效。应用程序适用于所有应用程序。