How does Tomcat compile JSP?
The first time a JSP page is requested, Tomcat passes it to Jasper which parses the code and sends it to its Java compiler (JDT, a component borrowed from the Eclipse IDE project) to have the servlet elements compiled into Java bytecode classes.
How do I Precompile a JSP file?
To select precompilation, right-click the EAR or WAR file you wish to export and select Export > EAR file or Export > WAR file. In the Export dialog, select the checkbox Pre-compile JSP. Note: the pre-compile JSP option is available only to projects targeted to WebLogic Server 9.2 and 10.0 runtimes.
Can Tomcat run JSP?
you can use Tomcat(has jsp container in it) to run your jsp.
Where do I put JSP files in Tomcat?
Add a JSP extension to the file name — for example, “filename. jsp” — and click “Save.” Put it at location C:\apache-tomcat-7.0. 28\webapps\ROOT.
What is JSP compilation?
JSP compilation causes the compilation of JSP files before they are first accessed on a live server.
How do you program a JSP?
How to Run a JSP Program in Apache Tomcat (Windows)
- In your text editor, you will develop a simple JSP that creates a web page to display the current date.
- Save your file as DateJSP.
- Copy your file to CATALINA_HOME/webapps/ROOT , e.g., c:/Tomcat8/webapps/ROOT .
- Start the Tomcat server.
How do you write and run a JSP program?
Can JSP run on browser?
Browser doesn’t support JSP but can display the response generated by Java code written in JSP. You can generate dynamic data using special JSP elements(JSP tags, JSP directives etc).
Why is JSP obsolete?
JSP is really a little bit outdated. And there are some inconveniences in it. For example, JSP is a real headache for web designers. Designers cannot just open a JSP file, make some changes, and check the result in the browser, because the JSP file contains tags that are invalid for HTML.
Is it possible to pre-compile JSPS with Tomcat?
The Tomcat documentation gives recommendations for pre-compiling JSPs at build time using Ant (and a Maven plugin is also available)… but the resulting WAR contains Tomcat-specific stuff e.g. PageContextImpl.proprietaryEvaluate, so we can’t use it in Jetty.
How do I implement build-time JSP compilation?
There are a number of ways to implement build-time JSP compilation. The traditional hack is to use a modified Ant build-file to call JspC and map the servlet to “WEB-INF/web.xml”. Instructions and a sample build file for this method are available on the Apache project site.
What is a JSP build file?
This build file will find all of your webapp’s JSP files, compile them into servlet classes, and generate servlet mappings for those JSP servlet classes.
What is the purpose of the JSP pre-compiled page option?
This technique will eliminate compilation delay for the first user visiting a given pre-compiled JSP page, at the expense of a slower web-app restart cycle, and still allows you to alter the JSP as needed.