Wednesday, August 3, 2011

How to Fix Ant Build Error: "Could not load a dependent class com/jcraft/jsch/Logger. It is not enough to have Ant's optional JARs"

If you get an error message like this while running a problematic Ant build script file :

remote.flush:

BUILD FAILED
/home/ceefour/git/magento-id/build.xml:13: The following error occurred while executing this line:
/home/ceefour/git/magento-id/build.xml:22: Problem: failed to create task or type sshexec
Cause: Could not load a dependent class com/jcraft/jsch/Logger
       It is not enough to have Ant's optional JARs
       you need the JAR files that the optional tasks depend upon.
       Ant's optional task dependencies are listed in the manual.
Action: Determine what extra JAR files are needed, and place them in one of:
        -/home/opt/eclipse_web/plugins/org.apache.ant_1.8.2.v20110505-1300/lib
        -/home/ceefour/.ant/lib
        -a directory added on the command line with the -lib argument

Do not panic, this is a common problem.
The commonest cause is a missing JAR.

This is not a bug; it is a configuration problem


It means your Ant build script file using optional Ant libraries and need to tell Ant where to find them.

In my case, it needs jsch.jar aka libjsch-java package in Debian/Ubuntu Linux.

First you need to install ant-optional package for Ant optional libraries support :
sudo apt-get install ant-optional

Then the libjsch-java Debian/Ubuntu package:
sudo apt-get install libjsch-java

Then put it in correct directories so that Ant can find them :

sudo ln -s /usr/share/java/jsch.jar /usr/share/ant/lib/
mkdir -vp ~/.ant/lib
ln -s /usr/share/java/jsch.jar ~/.ant/lib/

Ubuntu's Ant look for libraries in /usr/share/ant/lib folder, while Eclipse IDE's Ant look for optional Ant libraries in $HOME/.ant/lib folder.

Note that for Eclipse IDE, you may need to refresh Eclipse Ant Plug-in's Runtime Classpath, by going to Window > Preferences > Ant > Runtime, and clicking "Restore Defaults".
Make sure that the required libraries are now listed under "Global Entries".

Ant build system is frequently used in typical Java EE 6 enterprise application development. I highly recommend The Java EE 6 Tutorial: Basic Concepts (4th Edition) for a practical guide to the Java EE 6 technology.

7 comments:

polo outlet said...

http://www.burbagssale2014.com/ Burberry Outlet
http://www.airmaxshoesfactory.com/ Air Max Shoes
http://www.coachblackfriday2014.com/ Coach Black Friday
http://www.coach-storeoutletonline.com/ Coach Black Friday
http://www.coachcoachoutlet.com/ Coach Cyber Monday
http://www.coachxfactory.com/ Coach Factory
http://www.coach-factoryoutletonline.net/ Coach Outlet Factory
http://www.coach-outletonlineusa.com/ Coach Outlet USA
http://www.coach-pursesfactory.com/ Coach Purses Factory
http://www.coachpurseusa.com/ Coach Purses USA
http://www.coach-storeoutlet.com/ Coach Store Outlet
http://www.coach-pursesonline.com/ Coach Purses On Sale
http://www.monsterbeatsbydres.com/ Monster Beats Outlet
http://www.louis-vuittonblackfriday.com/ Louis Vuitton Outlet
http://www.lv-guccishoesfactory.com/ Louis Vuitton Factory
http://www.marcjacobsonsale.com/ Marc Jacobs On Sale
http://www.mcmworldwides.com/ MCM Outlet
http://www.mcmoutlet-jp.com/ MCM 店铺
http://www.oakleysunglassesfactory.com/ cheap oakley sunglasses
http://www.michaelkorsmas.com/ Michael Kors Outlet
http://www.michaelkors.so/ Michael Kors Outlet
http://www.michaelkorsfactory-store.com/ Michael Kors Factory
http://www.michaelkorsoutletr.com/ Michael Kors Outlet
http://www.michael-korsfactoryonline.com/ Michael Kors Factory Online
http://www.newcoachfactoryoutlet.com/ Coach Factory Outlet
http://www.north-faceoutletonlines.net/ North Face Outlet Online
http://www.polo-outletstore.com/ Polo Outlet Store
http://www.ralph-laurenhome.com/ Ralph Lauren UK
http://www.saclongchamppairs.com/ Sac Longchamp Pairs
http://www.tcoachoutletonline.com/ Coach Outlet Online
http://www.the-coachfactoryoutlet.com/ Coach Factory Oultet
http://www.barbour-jacketsoutlet.com/ Barbour Jackets Outlet Online
http://www.canada-gooser.com/ Canada Goose Outlet
http://www.guccishoesuk-2014.com/ Gucci Outlet Online
http://www.michaelkorsstates.com/ Michael Kors Outlet
http://www.moncler-clearance.com/ Moncler Clearance
http://www.moncler-jacketsoutletonline.com/ Moncler Jackets Outlet Online
http://www.northsclearance.com/ North Clearace Outlet
http://www.polo-ralphlaurenonline.com/ Polo Ralph Lauren Outlet Online
http://www.woolrich-clearance.com/ Woolrich Clearance
http://www.cvshopfactory.com/ shop.coachfactory.com
http://www.mksfactoryoutlet.com/ Michael Kors Factory Outlet
http://www.zxcoachoutlet.com/ Coach Outlet Online USA
http://www.thebeatsbydre.net/ Beats by Dre
http://www.superbagsmarket.com/
http://www.newoutletonlinemall.com/ Coach Purses Outlet Online
http://www.clickmichaelkors.com/ Michael Kors USA

oakleyses said...

burberry handbags, prada outlet, ray ban sunglasses, gucci handbags, tiffany and co, louis vuitton, christian louboutin outlet, christian louboutin uk, tory burch outlet, ray ban sunglasses, polo ralph lauren outlet online, louis vuitton outlet, jordan shoes, michael kors outlet online, nike air max, christian louboutin, ray ban sunglasses, louis vuitton outlet, longchamp outlet, prada handbags, michael kors outlet online, uggs outlet, christian louboutin shoes, uggs on sale, ugg boots, louis vuitton outlet, chanel handbags, longchamp outlet, oakley sunglasses, nike outlet, louis vuitton, uggs outlet, polo outlet, michael kors outlet, burberry outlet, tiffany jewelry, michael kors outlet online, oakley sunglasses, nike air max, ugg boots, michael kors outlet online, oakley sunglasses, replica watches, nike free, michael kors outlet, replica watches, longchamp outlet, kate spade outlet

oakleyses said...

sac vanessa bruno, hollister uk, polo lacoste, vans pas cher, nike roshe run uk, nike free uk, true religion outlet, air max, polo ralph lauren, coach purses, louboutin pas cher, hollister pas cher, kate spade, lululemon canada, timberland pas cher, michael kors outlet, sac longchamp pas cher, michael kors pas cher, ray ban pas cher, true religion outlet, abercrombie and fitch uk, nike air max uk, replica handbags, nike air max uk, nike blazer pas cher, coach outlet, nike roshe, michael kors, mulberry uk, coach outlet store online, burberry pas cher, guess pas cher, nike air max, sac hermes, michael kors, north face uk, hogan outlet, north face, converse pas cher, oakley pas cher, ralph lauren uk, true religion outlet, new balance, jordan pas cher, nike free run, nike tn, longchamp pas cher, true religion jeans, nike air force, ray ban uk

oakleyses said...

hollister, north face outlet, mac cosmetics, baseball bats, nike huaraches, babyliss, new balance shoes, iphone cases, chi flat iron, louboutin, ferragamo shoes, iphone 5s cases, longchamp uk, soccer shoes, mcm handbags, nike roshe run, timberland boots, mont blanc pens, vans outlet, bottega veneta, instyler, oakley, ralph lauren, valentino shoes, giuseppe zanotti outlet, s6 case, p90x workout, celine handbags, iphone 6s plus cases, herve leger, north face outlet, nike trainers uk, ipad cases, iphone 6s cases, lululemon, wedding dresses, nike air max, abercrombie and fitch, nfl jerseys, hermes belt, insanity workout, ghd hair, asics running shoes, beats by dre, iphone 6 cases, reebok outlet, jimmy choo outlet, soccer jerseys, hollister clothing, iphone 6 plus cases

oakleyses said...

pandora jewelry, canada goose uk, canada goose, barbour, moncler, karen millen uk, swarovski crystal, replica watches, louis vuitton, canada goose, louis vuitton, juicy couture outlet, nike air max, lancel, swarovski, canada goose jackets, gucci, converse, thomas sabo, canada goose outlet, pandora charms, ugg,uggs,uggs canada, juicy couture outlet, doudoune moncler, hollister, moncler, montre pas cher, coach outlet, links of london, hollister, ugg uk, ugg, toms shoes, marc jacobs, pandora uk, vans, canada goose, moncler, canada goose outlet, moncler outlet, moncler outlet, louis vuitton, moncler, ray ban, louis vuitton, louis vuitton, converse outlet, moncler uk, ugg,ugg australia,ugg italia, supra shoes, barbour uk

Getit said...

This is amazing


Zapya for PC
Zapya free download
Zapya download
Zapya apk

Nithyanantham M said...

Thanks for sharing this post
Dailymotion video downloader

Try Dailymotion video
downloader
to download videos from dailymotion.

Post a Comment

 
Copyright 2009 Spring vs Java EE Web Dev. Powered by Blogger Blogger Templates create by Deluxe Templates. WP by Masterplan