JSP2010-10-24
Querying Data with the JSTL in JSP
To query data with the JSTL, follow these steps:
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JSP2010-10-24
The Exception Object in JSP
The exception object is an instance of the java.lang.Throwable class. It's available in error pages only, and it represents the exception that occurred that caused control to pass
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The Application Object in JSP
The application object is an instance of a class that implements the javax.servlet.ServletContext interface, and it allows the page to obtain and to set data information about the
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The Session Object in JSP
The session object is an instance of a class that implements the javax.servlet.http.HttpSession interface. You can use it to store session state for a user, and it makes the follow
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The Out Object in JSP
The out object is an instance of the javax.servlet.jsp.JspWriter class. It's used to create the content returned to the client and has the following useful methods available.
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The Response Object in JSP
The response object is an instance of a class that implements the javax.servlet.http.HttpServletResponse interface. It represents the response to be made to the client, and it make
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JSP2010-10-24
The Request Object in JSP
The request object is an instance of a class that implements the javax.servlet.http.HttpServletRequest interface. It represents the request made by the client and makes the followi
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Tag Libraries in JSP
The syntax for using tag libraries is similar to that for the standard actions except of course that the tag names and attributes are defined in the tag library itself rather than
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Scriptlets and Expressions in JSP
Scriptlets enclose Java code (on however many lines) that's evaluated within the generated servlet's _jspService() method to generate dynamic content:
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Declarations in JSP
The following syntax allows you to declare variables and methods for the page. These are placed in the generated servlet outside the _jspService() method; in other words, variables
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The taglib, tag, include, attribute and the variable Directive in JSP
A tag library is a collection of tags used to extend a JSP container functional model. The taglib directive defines a tag library namespace for the page, mapping the uniform resour
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The page Directive in JSP
The page directive specifies attributes for the page; all the attributes are optional, and the essential ones have default values, shown in bold:
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