Tagsupport Pagecontext Is Null

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java - Why pagecontext in customtag cause Null Exception ...

    https://stackoverflow.com/questions/13301985/why-pagecontext-in-customtag-cause-null-exception
    In your code you are defining a separate _pageContext field that you never initialize; however, by extending TagSupport you should have access to a field pageContext that JSP initializes for you automatically. Try removing the variable declaration and calling pageContext…

[Taglibs-user] PageContext is always null with taglibs ...

    https://grokbase.com/t/tomcat/taglibs-user/029cmtn1ek/pagecontext-is-always-null-with-taglibs
    (12 replies) I am trying to write a custom taglib that extends the TagSupport class. At one point my implementation worked, but when upgrading to Tomcat 4.0.4, I keep getting a NullPointerException because the protected variable pageContext is null. Any clues? Is tomcat's servlet implementation no longer setting the PageContext? What gives? Or how do I get a handle to the request and/or ...

Class TagSupport - Apache Tomcat

    https://tomcat.apache.org/tomcat-5.5-doc/jspapi/javax/servlet/jsp/tagext/TagSupport.html
    public class TagSupport extends java.lang.Object implements IterationTag, java.io.Serializable. A base class for defining new tag handlers implementing Tag. The TagSupport class is a utility class intended to be used as the base class for new tag handlers.

Session is null in a custom TagLib extending TagSupport

    https://stackoverflow.com/questions/9001308/session-is-null-in-a-custom-taglib-extending-tagsupport
    I'm trying to use a custom taglib in a portlet application. The portlet uses Spring MVC Portlet, but I don't think that's relevant here. The tag extends TagSupport. It tries to get the HttpSession

Get pageContext in a tag file Oracle Community

    https://community.oracle.com/thread/1425319
    Jul 22, 2005 · How can I get pageContext variable in a tag file? I'm trying something like. Skip navigation. ... Now if you are coding a tag class and your tag extends TagSupport, pageContext is again a protected super class variable. ... Then I'm invoking operations requiring pageContext and looks like pageContext is null => jspContext is null. What you ...

Java Code Examples javax.servlet.jsp.tagext.TagSupport

    https://www.programcreek.com/java-api-examples/index.php?api=javax.servlet.jsp.tagext.TagSupport
    The following are top voted examples for showing how to use javax.servlet.jsp.tagext.TagSupport.These examples are extracted from open source projects. You can vote up the examples you like and your votes will be used in our system to generate more good examples.

TagSupport (Java EE 5 SDK) - Oracle

    https://docs.oracle.com/javaee/5/api/javax/servlet/jsp/tagext/TagSupport.html
    The TagSupport class is a utility class intended to be used as the base class for new tag handlers. The TagSupport class implements the Tag and IterationTag interfaces and adds additional convenience methods including getter methods for the properties in Tag.

pageContext Implicit Object in JSP with examples

    https://beginnersbook.com/2013/11/jsp-implicit-object-pagecontext-with-examples/
    If it finds the attribute it would assign it to Object obj else it would return Null. Object obj = pageContext.getAttribute("BeginnersBook", PageContext.SESSION_CONTEXT); Similarly the method can be used for other scopes too – Object obj = pageContext.getAttribute("BeginnersBook", PageContext.

How to Create JSP Custom Tag – using Tag interface or ...

    https://www.jitendrazaa.com/blog/java/how-to-create-jsp-custom-tag-using-tag-interface-or-tagsupport/
    Mar 17, 2011 · How to Create JSP Custom Tag – using Tag interface or TagSupport Author posted by Jitendra on Posted on March 17, 2011 under category Categories JAVA , JSP and tagged as Tags JSP with 2 Comments on How to Create JSP Custom Tag – using Tag interface or TagSupport

TagSupport (Java 2 Platform Ent. Ed. v1.4)

    https://docs.oracle.com/javaee/1.4/api/javax/servlet/jsp/tagext/TagSupport.html
    The TagSupport class is a utility class intended to be used as the base class for new tag handlers. The TagSupport class implements the Tag and IterationTag interfaces and adds additional convenience methods including getter methods for the properties in Tag.



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