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九個內(nèi)置對象，其作用域是對象上的應(yīng)用程序。九種類型的內(nèi)置請求對象javax.servlet.servlet請求作用域請求響應(yīng)對象類型javax.servlet.SrvletResponse作用域頁上下文頁上下文對象類型javax.servlet.jsp. pagecontext作用域頁會話對象類型javax.servlet.http. httpsession scopesession應(yīng)用程序?qū)ο箢愋蚸avax.servlet.ServletContext范圍應(yīng)用程序輸出對象類型javax.servlet.jsp. jspwriter作用域頁配置對象類型javax.servlet.ServletConfig作用域頁對象類型javax.lang.Object對象作用域頁異常對象類型javax.lang.Throwable可丟棄范圍頁