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What is a page directive in JSP?
The page directive is used to provide instructions to the container. These instructions pertain to the current JSP page. You may code page directives anywhere in your JSP page. By convention, page directives are coded at the top of the JSP page.
Following is the basic syntax of the page directive −
<%@ page attribute = "value" %>
You can write the XML equivalent of the above syntax as follows −
<jsp:directive.page attribute = "value" />
Attributes
Following table lists out the attributes associated with the page directive −
| S.No. | Attribute & Purpose |
|---|---|
| 1 | buffer Specifies a buffering model for the output stream. |
| 2 | autoFlush Controls the behavior of the servlet output buffer. |
| 3 | contentType Defines the character encoding scheme. |
| 4 | errorPage Defines the URL of another JSP that reports on Java unchecked runtime exceptions. |
| 5 | isErrorPage Indicates if this JSP page is a URL specified by another JSP page's errorPage attribute. |
| 6 | extends Specifies a superclass that the generated servlet must extend. |
| 7 | import Specifies a list of packages or classes for use in the JSP as the Java import statement does for Java classes. |
| 8 | info Defines a string that can be accessed with the servlet's getServletInfo() method. |
| 9 | isThreadSafe Defines the threading model for the generated servlet. |
| 10 | language Defines the programming language used in the JSP page. |
| 11 | session Specifies whether or not the JSP page participates in HTTP sessions |
| 12 | isELIgnored Specifies whether or not the EL expression within the JSP page will be ignored. |
| 13 | isScriptingEnabled Determines if the scripting elements are allowed for use. |
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