About JSP (Tomcat)

[Domenico]

Hello,

I installed Tomcat for a user and now he asks me about where his java classpath is.

I really don't have a clue what he is asking because we don't have any experiences with Tomcat whatsoever so I hope someone can give me the answer.

Thank you!
Domenico

 

[portman]

We just installed a few weeks ago...

I think you will get what you want if to SSH into the server (as root) and type this:

echo $CLASSPATH

Case IS important.

 

[Domenico]

Hi Portman,

I will send the output to the client and hope it will be what he needed.

Thanks for helping!
Domenico

 

[Domenico]

I just got a reply from the client and he says that this is the classpath for the Java JRE engine.

He needs all the info about WEB-INF.
Does he need to create that himself?

 

[jsteel]

Create this directory structure in his /public_html directory:

/WEB-INF/classes

Then restart Tomcat. The customer can then put his servlets in the /classes subdirectory and call them like so (assuming you added servlet support to his domain in WHM):

http://www.hisdomain.com/servlet/NameOfServlet


Jaz

 

[Domenico]

Thanks for replying.
How must I chmod the new directories?
755?

 

[jsteel]

Yes.

 

[Domenico]

I'm awaiting the clients reply on this and will let you know if it worked for him...

 

[Vital]

Here's another very important thing:

if you have installed Tomcat 4.x Plugin from CPanel, you will need to edit /scripts/gentomcatlist

find this line in it:

&Host name=&$nhost&&
&Context path=&& reloadable=&true& docBase=&$nhosts{$nhost}& debug=&1&/&
&/Host&

and change to this:

&Host name=&$nhost& appBase=&$nhosts{$nhost}&&
&Context path=&& reloadable=&true& docBase=&$nhosts{$nhost}& debug=&1&/&
&/Host&

then execute this file, and restart tomcat.

Otherwise his JSP pages will work,but he won't be able to run servlets at all.

Note to CPanel DEV. Team - would you be so kind to include this little mod by default?

 

[jsteel]

Afraid you are wrong there Vital. We don't have the appBase parameter on any of our accounts and everyone's servlets work just fine.

Jaz

 

[Vital]

Mmm... And war files too? Have you changed anything else after default installation? 'Cause it didn't worked, till i figured out this appBase parameter in server.xml...

 

[jsteel]

Haven't tried WAR files yet. Do you have them working? If so, how are you calling them from a URL? I'd like to do a test on my machine without the appBase.

Jaz

 

[Vital]

[quote:c9e135e671][i:c9e135e671]Originally posted by jsteel[/i:c9e135e671]
Haven't tried WAR files yet. Do you have them working? If so, how are you calling them from a URL? I'd like to do a test on my machine without the appBase.
[/quote:c9e135e671]

Yeah i do. Here's the deal:

you put the file into public_html, restart tomcat, and file gets unpacked into directory of it's name.

then you'll need to add mapping, like:

JkMount /warname/* ajp13

into virtualhost...

And it works just fine. )


A question to everyone: any idea, why i can't use JkMount through .htaccess? It would be extremely useful thing to have for customers.

 

[moronhead]

[quote:838b6e0e21][i:838b6e0e21]Originally posted by Vital[/i:838b6e0e21]

you put the file into public_html, restart tomcat, and file gets unpacked into directory of it's name.

......
[/quote:838b6e0e21]
Does that mean every time the client puts a new WAR file in his web root you have to restart tomcat?

 

[jsteel]

[/quote]
Does that mean every time the client puts a new WAR file in his web root you have to restart tomcat?[/quote]

Yes. Not very effective obviously. I'm also wondering what kind of effect unPack=false would have on Vital's setup. Vital, have you tried this yet? Would this allow new version to be uploaded and read without a restart?

Jaz

 

[dgbaker]

When we tried to implement that little mod to the gentomcatlist script we get the following error and Tomcat dies. Our users cannot get jsp/servlets to execute properly on a sub-domain.

Scanning httpd.conf...X..X..X.X..X..X..X..X..X...X..X..X.X...X..X.X...X.X...X.X...X
Using CATALINA_BASE: /usr/local/jakarta/jakarta-tomcat-4.0.3-src/build
Using CATALINA_HOME: /usr/local/jakarta/jakarta-tomcat-4.0.3-src/build
Using CATALINA_TMPDIR: /usr/local/jakarta/jakarta-tomcat-4.0.3-src/build/temp
Using JAVA_HOME: /usr/local/jdk
&b&ERROR reading /usr/local/jakarta/jakarta-tomcat-4.0.3-src/build/conf/server.xml
At Element type &Host& must be followed by either attribute specifications, &&& or &/&&.
&/b&
Catalina.stop: org.xml.sax.SAXException: Element type &Host& must be followed by either attribute specifications, &&& or &/&&.
org.xml.sax.SAXException: Element type &Host& must be followed by either attribute specifications, &&& or &/&&.
at org.apache.xerces.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:979)
at org.xml.sax.helpers.XMLReaderAdapter.parse(Unknown Source)
at javax.xml.parsers.SAXParser.parse(Unknown Source)
at javax.xml.parsers.SAXParser.parse(Unknown Source)
at org.apache.catalina.util.xml.XmlMapper.readXml(XmlMapper.java:228)
at org.apache.catalina.startup.Catalina.stop(Catalina.java:822)
at org.apache.catalina.startup.Catalina.execute(Catalina.java:683)
at org.apache.catalina.startup.Catalina.process(Catalina.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:243)
httpd: no process killed
Using CATALINA_BASE: /usr/local/jakarta/jakarta-tomcat-4.0.3-src/build
Using CATALINA_HOME: /usr/local/jakarta/jakarta-tomcat-4.0.3-src/build
Using CATALINA_TMPDIR: /usr/local/jakarta/jakarta-tomcat-4.0.3-src/build/temp
Using JAVA_HOME: /usr/local/jdk

 

[futuron]

(assuming you added servlet support to his domain in WHM):

Where do I enable that support?

 

[futuron]

Where do I enable that support?

I think that someone knows this.