jsp的作用域范圍有幾種？Name scope application is valid in all applications session is valid in the current ses

jsp的作用域范圍有幾種？

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

JSP九個(gè)內(nèi)置對(duì)象，其作用域是對(duì)象上的應(yīng)用程序。JSP中的九個(gè)內(nèi)置對(duì)象是：request object typejavax.servlet.servlet請(qǐng)求作用域請(qǐng)求響應(yīng)對(duì)象類型javax.servlet.SrvletResponse作用域頁上下文頁上下文對(duì)象類型javax.servlet.jsp. pagecontext作用域頁會(huì)話對(duì)象類型javax.servlet.http. httpsession scopesession應(yīng)用程序?qū)ο箢愋蚸avax.servlet.ServletContext范圍應(yīng)用程序輸出對(duì)象類型javax.servlet.jsp. jspwriter作用域頁配置對(duì)象類型javax.servlet.ServletConfig作用域頁對(duì)象類型javax.lang.Object對(duì)象作用域頁異常對(duì)象類型javax.lang.Throwable可丟棄范圍頁