Experimental Physics and
Industrial Control System

Claude Saunders <[email protected]> · Fri, 03 Nov 2006 10:31:06 -0600

Hi Eric,
I'm not sure what the problem is, but it seems to have something to do
with the java JDK version you have, or perhaps the CLASSPATH you have.
Both javax.crypto and javax.xml.parsers are built into the core JDK
1.4.2 (but were not in older versions of java). The javax.xml.parsers
are in rt.jar and the javax.crypto is in jce.jar, both of which are
distributed with the JDK I get from java.sun.com (for Linux). I wonder
if you have a JDK from somewhere else, or one which is missing these for
some reason. I know there was a time when javax.xml.parsers was not
distributed, and I suppose a European version of java might choose to
omit javax.crypto due to export restrictions. But I know many others in
Europe who have built IRMIS without a problem.
I don't use the environment variable CLASSPATH at all. I tested it, and
apparently ant <javac> uses both the CLASSPATH and the paths specified
by <classpath> element. I don't know what the precedence is, though.
Perhaps if you have explicitly specified a particular rt.jar in
CLASSPATH, this might cause a problem.
Although you should not have to, as a last resort you can download
xml-apis.jar and jce.jar as separate java extensions I believe. I have a
copy of xml-apis.jar in irmisBase/db/lib/java. jce.jar is available from
java.sun.com as JCE package.
In general, IRMIS builds and runs fine with 1.5.x. The only problem with
1.5.x is that there is some slightly different Swing behavior that seems
to cause minor problems with the GUI. But nothing significant.
I hope this helps.
   Regards, Claude

Lecorche Eric wrote:

Although being an Epics beginner, I would like to perform an
evaluation of the Irmis package.
When I run "ant deploy" on the db directory, I get the following
errors during the Java compilation :
compile:

[javac] Compiling 87 source files to
/home/epics1/Irmis/irmisBase/db/build/classes

[javac]
/home/epics1/Irmis/irmisBase/db/src/db/java/gov/anl/aps/irmis/persistence/DAOContext.java:18:
error: ne peut repÃ©rer

le package par dÃ©faut Â« javax.crypto Â». VÃ©rifier la variable
d'environnement CLASSPATH et l'accÃ¨s aux archives.

[javac]
/home/epics1/Irmis/irmisBase/db/src/db/java/gov/anl/aps/irmis/persistence/DAOContext.java:12:
error: Class or interfa

ce `javax.xml.parsers.ParserConfigurationException' not found in import.

[javac] import javax.xml.parsers.ParserConfigurationException;

[javac] ^

[javac]
/home/epics1/Irmis/irmisBase/db/src/db/java/gov/anl/aps/irmis/persistence/DAOContext.java:61:
error: Type `SecretKeyS

pec' not found in the declaration of the local variable `skeySpec'.

[javac] SecretKeySpec skeySpec = new
SecretKeySpec(key.getBytes(), "Blowfish");

[javac] ^

[javac]
/home/epics1/Irmis/irmisBase/db/src/db/java/gov/anl/aps/irmis/persistence/DAOContext.java:62:
error: Type `Cipher' no

t found in the declaration of the local variable `cipher'.

[javac] Cipher cipher =
Cipher.getInstance("Blowfish");

[javac] ^

[javac]
/home/epics1/Irmis/irmisBase/db/src/db/java/gov/anl/aps/irmis/persistence/DAOContext.java:64:
error: Type `CipherInpu

tStream' not found in the declaration of the local variable `cis'.

[javac] CipherInputStream cis = new
CipherInputStream(fileInputStream, cipher);

[javac] ^

[javac]
/home/epics1/Irmis/irmisBase/db/src/db/java/gov/anl/aps/irmis/persistence/DAOContext.java:71:
error: Type `DocumentBu

ilderFactory' not found in the declaration of the local variable
`docBuilderFactory'.

[javac] DocumentBuilderFactory docBuilderFactory =
DocumentBuilderFactory.newInstance();

[javac] ^

[javac]
/home/epics1/Irmis/irmisBase/db/src/db/java/gov/anl/aps/irmis/persistence/DAOContext.java:72:
error: Type `DocumentBu

ilder' not found in the declaration of the local variable `docBuilder'.

[javac] DocumentBuilder docBuilder =
docBuilderFactory.newDocumentBuilder();

[javac] ^

[javac]
/home/epics1/Irmis/irmisBase/db/src/db/java/gov/anl/aps/irmis/persistence/DAOContext.java:91:
error: Type `ParserConf

igurationException' not found in the declaration of the local variable
`pce'.

[javac] } catch (ParserConfigurationException pce) {

[javac] ^

[javac]
/home/epics1/Irmis/irmisBase/db/src/db/java/gov/anl/aps/irmis/persistence/DAOContext.java:103:
error: Type `NoSuchPad

dingException' not found in the declaration of the local variable `nspe'.

[javac] } catch (NoSuchPaddingException nspe) {

[javac] ^

[javac] 9 errors
(The first error message -in french- says that the "javax.crypto"
package can't be found and that I have to check the CLASSPATH
environment variable).
As it is the first time I am using ant, I suspect I am missing
something but I don't see what : I checked that JAVA_HOME, ANT_HOME
and PATH are correctly set ; then, I verified that if doing a standard
Java compilation (not using ant), it compiles correctly and for
example finds the missing "javax.crypto" package. I came along the ant
web site but don't see there any way to solve the problem ; finally, I
tried to understand the build.xml configuration file without finding
any clue.
By the way, when using ant, is the CLASSPATH environment variable
used, or is the classpath /only/ built from the configuration
build.xml file ?
Thanks in advance for any help
Eric Lécorché

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System