Only one servlet is executed at run time. Scriptlet variables declared in the parent page can be accessed in the included page remember, they are the same page. The included page does not need to able to be compiled as a standalone JSP.
It can be a code fragment or plain text. The included page will never be compiled as a standalone. The included page can also have any extension, though. One drawback on older containers is that changes to the include pages may not take effect until the parent page is updated. Recent versions of Tomcat will check the include pages for updates and force a recompile of the parent if they're updated.
A further drawback is that since the code is inlined directly into the service method of the generated servlet, the method can grow very large. Each included page is executed as a separate servlet at run time.
Pages can conditionally be included at run time. This is often useful for templating frameworks that build pages out of includes. The parent page can determine which page, if any, to include according to some run-time condition.
The values of scriptlet variables need to be explicitly passed to the include page. The included page must be able to be run on its own. You are less likely to run into compilation errors due to the maximum method size being exceeded in the generated servlet class.
Community Bot 1 1 1 silver badge. Darth Darth 4 4 silver badges 14 14 bronze badges. So what is the difference between using tag files and includes as it seems tag files can be used to include content in a page?
Saurabh Ande Saurabh Ande 3 3 silver badges 12 12 bronze badges. What about tagfiles, I know how inlcudes work. I'm wondering how tag files relate to includes as it seems they provide the same functionality. What is the differrence between using tagfiles and using includes? Is that restricted too? Hari Hari 1, 1 1 gold badge 10 10 silver badges 13 13 bronze badges. Did I get it right? According to: Java Revisited Resources included by include directive are loaded during jsp translation time, while resources included by include action are loaded during request time.
Include directive is static import, while include action is dynamic import. Adriano 3, 4 4 gold badges 28 28 silver badges 43 43 bronze badges. Abhijeet Ashok Muneshwar Abhijeet Ashok Muneshwar 2, 2 2 gold badges 29 29 silver badges 31 31 bronze badges. Sign up or log in Sign up using Google. The JSP include directive and action tags are two different types for translate the JSP codes into the JSP containers we can add all other extension files in the single web page for work in the navigation for web applications.
This is a guide to JSP Include. Here we discuss an introduction to JSP Include with appropriate syntax, working and examples to implement. You can also go through our other related articles to learn more —. This works pretty much like include action but the main difference between import tag and includes action is that import tag can include resources from the outside world.
If you use include directive or include action you are only limited to include the output of resources from the same project or another web application residing in the same container.
It is the most powerful and flexible way to include the content of one JSP to another. The file to be included is specified by url attribute of the import tag. The main difference between include directive and include action is that the former is static include while the latter is dynamic include. Were u able to find a solution for it? Have you tried with GlassFish Server? Where does the code goes in side servlet of both Page directive and after page parsed and servlet made by JSP container?
Always remember ,include directive inserts the file at the time the jsp page is translated into a servlet whereas include action inserts the file at the time the page is requested. So in the case of directive include ,b. But in the case of action include sometimes it will work and sometimes it will not work…. But you can resolve that problem using the concept of and you should use request.
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