Improve Eclipse Resin Plugin 
is a free open-source (Common Public License Version 0.5) plugin developed by Improve (http://www.improve.fr - http://www.application-servers.com - http://www.improve-technologies.com).
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This plugin has 3 functionnalities:
ResinLauncher: launch resin within eclipse to let you debug jsp or servlet.
ResinProjectWizard: create default webapp directory structure and classpath. You can also convert an existing project into a resin project
ResinWarFile: create war file for you using ant.


You must have resin installed to use this plugin (http://www.caucho.com/download/)
This plugin was tested with windows NT4 SP6, jdk 1.4, eclipse F2/F3 , resin 2.1

HOW TO:
First go to Window => Preferences => Resin
Specify your resin home directory
Specify the java compiler (javac) you wish resin to use to compile jsp
You will usually find it under pathTojdk/bin/javac.
You can leave this blank is you launch resin with a jdk instead of a jre.

Create a new Resin project using the resinProjectWizard.

To start resin use the run or debug button(menu) => Run As => Resin launcher. This is it.
point your browser to http://localhost:8080/projectName

or use the run or debug button (or menu) => Run => chose resin => new
There you can chose the config File you want to use to start resin.
If you chose a file that does not exist the plugin will create a simple config file for you.
This config will have a webapp configured for your project. You should be able to access your webapp at
http://localhost:8080/projectName
You can later modify this file as you wish.

By default resin will be launched using the classpath of your eclipse project.
Add the classpath and parameter you might need and hit run or debug.
The plugin add to the paramaters: "-conf pathToYourConfigfile"

call your jsp once to let resin compile it.
refresh your project to find the compiled version of your jsp in WEB-INF/work,
set your break point and call your jsp again to debug.

Generate war file
right click on your project chose resin menu => export to war
this will generate a build.xml file to use with ant.

Convert an existing project into a resin project
right click on your project chose resin menu => convert to resin project
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To start resin within eclipse manually
add these libraries to the build path of your project
resin.jar
jsdk23.jar
jta-spec1_0_1.jar

in resin.jar run
com.caucho.server.http.HttpServer
with the argument (optional)
-conf pathToConfigFile/resin.conf

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Version 0.5
- added ResinLauncherShortcut
	in your resin project use the run or debug button => Run As => Resin launcher
	this will create a default resin config file (WEB-INF/resin.conf) that is used to launch resin immediatly.
- convert to resin project pop-up menu

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Version 0.4.1 (change made by Yori Sakakura)

- removed import org.apache.xml.utils.URI from ResinPlugin.java
- added java/@args="-g" to resin.conf so local variables show up in debugger for resin-generated classes
- changed ResinProject.addResinJarToProjectClasPath() to add all jars found in resin/lib to support JDK 1.3 (which doesn't have JAXP by default) and Resin-CMP
- ResinProject creates folders before setting source entries to avoid minor error messages on project creation
- Launch.java quotes config file name in case of spaces in path name
- commented out extension to 'org.eclipse.debug.ui.launchConfigurationShortcuts' in plugin.xml - the extension point doesn't appear to exist in F2.

NOTE  :
'org.eclipse.debug.ui.launchConfigurationShortcuts' was replaced with 'org.eclipse.debug.core.launchShortcuts' need to make some changes to have this extension point working again
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Version 0.4

- remove import of internal eclipse package 
- clean up the code

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Version 0.3

- export to war using ant
- generate config file

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Version 0.2

- Resin Launching type (resin is no more launched with an actionSet, easier to specify options: classpath, debug mode, parameters)

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Version 0.1

- Preference page for resin (home dir, config file, debug mode)
- New Project Wizard for resin (WEB-INF/src,WEB-INF/classes,WEB-INF/work)
- Action Set to start resin from eclipse

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TODO
- Automatic update of resin.conf file
- BUG : In the new Project creation wizard when selecting the java resin project
the description (at the top under Select) is not shown correctly.
the bug involve plugin.xml and plugin.properties files and I just can't find out what's wrong??


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NOTES
With the default resin parameters
If you change resin.conf resin will restart by itself
If you change your web.xml file the web-app will be reloaded.