I am running GroovyConsole on a mac (to launch I just do groovyConsole from the command line). I am a newbie so not sure how I can import needed libraries (jars). For example suppose my groovy script needs apache commons httpclient.
Do I need to specify the jar names in the command line when I open groovyConsole or should I be using Grapes? If it is the latter, I am not sure, the exact syntax of the Grab command. I tried the below and it didn't work...
#Grapes([
#Grab('org.apache:commons-httpclient:3.1'),
#GrabConfig(systemClassLoader = true)])
import org.apache.commons.httpclient.Credentials
Any help would be much appreciated.
You can either do just
#Grab('org.apache:commons-httpclient:3.1')
Or you can add jars from the menu in the groovy console itself
Related
I'm trying to run a groovy script which loads data into a Postgresql database. It runs perfectly using IntelliJ but fails when run from the windows command line with the following error:
Caught: java.lang.ClassNotFoundException: org.postgresql.Driver
java.lang.ClassNotFoundException: org.postgresql.Driver
at UploadStressTestData.run(UploadStressTestData.groovy:118)
Apparently, the groovy script can't find the driver class. I need to somehow make that available or loadable from that script.
My question is, how do I do that? Do I need to use the -cp option and tell it where the postgresql driver is?
Any help vastly appreciated.
groovy -cp C:\Users\someuser\workspace\lib\postgresql-42.2.6.jre7.jar UploadStressTestData.groovy
In the simplest case you should be using #Grab to pull dependencies for your scripts:
#Grab('org.postgresql:postgresql:42.2.6')
// do your scripting stuff
I have run groovy script for a while from command line. Recently I have started to work with spock/groovy in the eclipse. I have run couple of test using Groovy Console when console was loaded from eclipse. Any way after these activities I have tried to execute groovy from command line and it failed with the following error:
Caused by: groovy.lang.GroovyRuntimeException: Conflicting module versions. Module [groovy-xml is loaded in version 2.4.3 and you are trying to load version 2.4.1
I was using gvm tool to reinstall groovy and set is a primary version but still have the problem. Something was changed from eclipse where my groovy installation gets affected and can not be fixed by by reinstalling.
I have some search done but did not find solution. most solution were mentioning this problem but they were trying to fix this withing eclipse, where in my case I am trying to fix it outside of eclipse. Also will be nice if I be able to prevent this from happening in the future. If somebody have similar experience please share.
Thanks,
Alexander
I wrote a small Scala application. I have 2 classes in one source file including the App trait runner to start the program. It works just fine when I run it in the terminal:
scalac update.scala // compiling
scala update // run it
Now I want to run it with a cron job. For this I edited sudo crontab -e and added this:
*/2 * * * * scala /usr/bin/local/update
and made the script executable but nothing happend so far. I'm not sure how to do it:
Do I have to make a jar file for this?
Do I have to add this before my classes or not?
#!/bin/sh
exec scala -savecompiled $0 $#
!#
Does anyone have some experience with this?
Thanks in advance.
I suspect scala isn't in $PATH where cron can see it.
Try the following in a shell session:
$ which scala
Which should output something like "/opt/scala/2.9.1/bin/scala" or something. Could be in /usr/local, any number of places - java and the unix filesystem don't really play together nicely.
So now you have two options:
Put the folder where scala lives in the system path (This will usually involve editing /etc/profile, but you don't specify the OS so I can't say for sure)
(Easier) Just change the the cron entry to call /full/path/to/scala rather than just "scala"
The scala command expects the name of a compiled runnable object or a file containing a scala script source (or a runnable jar file) as the thing to run.
If you have in update.scala object update extends App (and no package declaration) then after scalac update.scala (which should have produced a bunch of *.class files) scala update is the right thing to run.
If the produced class files are not in the current directory then the -classpath option should be used to tell scala where to find them, as in eg. scala -classpath /usr/bin/local update, if the class files are indeed in /usr/bin/local.
Saying scala /usr/bin/local/update would make sense if the file /usr/bin/local/update (this exact name) contained scala script source (that is more or less a sequence of scala expressions not wrapped in a class or object).
I have a script where a method is annotated with the #Grab annotation
#Grab(group='org.codehaus.groovy.modules.http-builder', module='http-builder', version='0.5.2' )
everytime i run the script groovy downloads all the required jars from internet, this makes the execution of the script very slow.
Why is it doing this? It has just downloaded all the necessary jars, i see them in .groovy/grapes
Groovy 1.8.4 on Linux
Thanks for the help
I think it's an issue with the http-builder repo itself having dependencies with a version range.
A possible workaround is here
Also, http-builder seems to have a dependency on Groovy [1.5,1.7.99] so no idea what it does when you Grab using Groovy 1.8
I'm trying to run an ant build in linux and I'm getting odd results. I can't seem to get anything to run without specifying each and every library on the classpath, so I systematically added every jar in the "lib" and "ant/dep/lib" locations to the classpath explicitly.
It runs a bit without any issues (it's a setup batch, so in the first phase of the script, it uses a lot of "input" tasks), then I receive the message that org.apache.tools.ant.taskdefs.optional.PropertyFile was not found. Looking around, I discovered it was located in ant-nodeps.jar and I had added it to the class path, but no change.
Complete failure due to missing libraries I can understand, but why would the build partially function if I was sure I was including every library (including ant-nodeps.jar)?
The script file to launch it is as follows:
#!/QOpenSys/usr/bin/bsh
ANT_HOME=dep/ant
PARAMS="-Dant.home=$ANT_HOME -Dsystem.type=as400 -Dis-as400=y"
LIBS="lib/ant-contrib-1.0b3.jar:lib/ant-launcher.jar:lib/ant.jar:lib/catalina-ant.jar:lib/catalina-deployer.jar:lib/commons-net-2.2.jar:lib/el-api.jar:lib/ganymed.jar:lib/jakarta-oro-2.0.8.jar:lib/jasper-el.jar:lib/jasper.jar:lib/jsp-api.jar:lib/log4j-1.2.16.jar:lib/mail.jar"
ANTLIBS="$ANT_HOME/lib/ant-antlr.jar:$ANT_HOME/lib/ant-jai.jar:$ANT_HOME/lib/ant-starteam.jar:$ANT_HOME/lib/ant-apache-bcel.jar:$ANT_HOME/lib/ant-javamail.jar:$ANT_HOME/lib/ant-stylebook.jar:$ANT_HOME/lib/ant-apache-bsf.jar:$ANT_HOME/lib/ant-jdepend.jar:$ANT_HOME/lib/ant-swing.jar:$ANT_HOME/lib/ant-apache-log4j.jar:$ANT_HOME/lib/ant-jmf.jar:$ANT_HOME/lib/ant-testutil.jar:$ANT_HOME/lib/ant-apache-oro.jar:$ANT_HOME/lib/ant-jsch.jar:$ANT_HOME/lib/ant-trax.jar:$ANT_HOME/lib/ant-apache-regexp.jar:$ANT_HOME/lib/ant-junit.jar:$ANT_HOME/lib/ant-weblogic.jar:$ANT_HOME/lib/ant-apache-resolver.jar:$ANT_HOME/lib/ant-launcher.jar:$ANT_HOME/lib/ant.jar:$ANT_HOME/lib/ant-commons-logging.jar:$ANT_HOME/lib/ant-netrexx.jar:$ANT_HOME/lib/xercesImpl.jar:$ANT_HOME/lib/ant-commons-net.jar:$ANT_HOME/lib/ant-nodeps.jar:$ANT_HOME/lib/xml-apis.jar"
java -classpath $LIBS:$ANTLIBS $PARAMS org.apache.tools.ant.launch.Launcher -buildfile install/install.xml
Any help would be appreciated, even if only suggestions for what to try.
EDIT: In light of oers observation, I realized that there are shell scripts for ant afterall (have pity, I'm no expert in linux), so I'm going to attempt to use it to launch ant rather than try to do the same thing myself. I'll let everyone know of my progress and/or if I was able to fix it doing it that way.
I looked into the shellscript on my machine.
There is an additional parameter set:
-Dant.library.dir=\"$ANT_LIB\"
Perhaps this is needed?
ant_exec_command="exec \"$JAVACMD\" $ANT_OPTS
-classpath \"$LOCALCLASSPATH\"
-Dant.home=\"$ANT_HOME\"
-Dant.library.dir=\"$ANT_LIB\" $ant_sys_opts
org.apache.tools.ant.launch.Launcher
$ANT_ARGS
-cp \"$CLASSPATH\"
$ant_exec_args"
Using the ant scripts to launch the setup seemed to do the trick, specifying parameter -lib as lib and -buildfile as install/install.xml.