El expression cross reference JSP built-in object table

Time:2021-10-19

El expression built-in (implicit) object

pageContext Pagecontext object in JSP page can obtain other 8 objects
pageScope Represents the data saved in the page field, the map object
requestScope Represents the data saved in the request field, the map object
sessionScope Represents the data saved in the session domain, the map object
applicationScope Represents the data saved in the application field, the map object
param Represents a map object that holds all page request parameters
paramValues Generally, a string [] array is obtained by comparing the map object of multiple selection operation on the page
header Corresponding to all HTTP request header data
headerValues Corresponding to all HTTP request header data, corresponding to string [] array
cookie Map object corresponding to cookie
initParam Save the initialization parameter map object of all web applications

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