WebappClassLoader won't load resource from jar file ?!?
I have a web app containing resource files in several jar files, but I am unable to access the resources at runtime unless they are exploded into the classes directory. When trying to access the resource files using ClassLoader.getResourceAsStream( /meta-inf/com/kvasar/data.xml ) I always get null returned, even though that resource does exist inside a jar file in the web app's WEB-INF/lib directory. If I extract that resource to the classes directory, so I now have WEB-INF/classes/meta-inf/com/kvasar/data.xml, then I get it fine using the exact same path and ClassLoader - it works fine. The Tomcat Class Loader HOW-TO is telling me that it should find it in the jar. I have this problem on Tomcat 4.0.1 4.1.24, Win 2K The ClassLoader instance I am using for the getResourceAsStream() calls, is one that I get from one of my classes that is deployed to my webapp in a war file. Logging a toString() on this ClassLoader is shown below. Is it meaningful that it doesn't list my jar files in it's list of repositories ?? --- WebappClassLoader available: delegate: false repositories: /WEB-INF/classes/ required: -- Parent Classloader: StandardClassLoader available: Extension[javax.mail, implementationVendor=Sun Microsystems, Inc., implementationVendorId=com.sun, implementationVer sion=1.2, specificationVendor=Sun Microsystems, Inc., specificationVersion=1.2] delegate: true repositories: file:C:\Tomcat.4.0-retired\classes\ file:C:\Tomcat.4.0-retired\lib\activation.jar file:C:\Tomcat.4.0-retired\lib\catalina.jar file:C:\Tomcat.4.0-retired\lib\jakarta-oro-2.0.2-dev-2.jar file:C:\Tomcat.4.0-retired\lib\jakarta-regexp-1.2.jar file:C:\Tomcat.4.0-retired\lib\mail.jar file:C:\Tomcat.4.0-retired\lib\mailet.jar file:C:\Tomcat.4.0-retired\lib\xml4j.jar required: -- Parent Classloader: StandardClassLoader available: Extension[javax.mail, implementationVendor=Sun Microsystems, Inc., implementationVendorId=com.sun, implementationVer sion=1.2, specificationVendor=Sun Microsystems, Inc., specificationVersion=1.2] delegate: true repositories: file:C:\Tomcat.4.0-retired\common\classes\ file:C:\Tomcat.4.0-retired\common\lib\activation.jar file:C:\Tomcat.4.0-retired\common\lib\jasper-compiler.jar file:C:\Tomcat.4.0-retired\common\lib\jasper-runtime.jar file:C:\Tomcat.4.0-retired\common\lib\jta.jar file:C:\Tomcat.4.0-retired\common\lib\mail.jar file:C:\Tomcat.4.0-retired\common\lib\naming-common.jar file:C:\Tomcat.4.0-retired\common\lib\naming-factory.jar file:C:\Tomcat.4.0-retired\common\lib\naming-resources.jar file:C:\Tomcat.4.0-retired\common\lib\pbclient.jar file:C:\Tomcat.4.0-retired\common\lib\servlet.jar file:C:\Tomcat.4.0-retired\common\lib\tools.jar file:C:\Tomcat.4.0-retired\common\lib\tyrex-0.9.7.0.jar required: -- Parent Classloader: [EMAIL PROTECTED] Help ! Thanks ! Steph - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: WebappClassLoader won't load resource from jar file ?!?
Put the JARs in the WEB-INF/lib dir! -Original Message- From: Steph Richardson [mailto:[EMAIL PROTECTED] Sent: Tuesday, November 18, 2003 11:34 AM To: Tomcat Users List Subject: WebappClassLoader won't load resource from jar file ?!? I have a web app containing resource files in several jar files, but I am unable to access the resources at runtime unless they are exploded into the classes directory. When trying to access the resource files using ClassLoader.getResourceAsStream( /meta-inf/com/kvasar/data.xml ) I always get null returned, even though that resource does exist inside a jar file in the web app's WEB-INF/lib directory. If I extract that resource to the classes directory, so I now have WEB-INF/classes/meta-inf/com/kvasar/data.xml, then I get it fine using the exact same path and ClassLoader - it works fine. The Tomcat Class Loader HOW-TO is telling me that it should find it in the jar. I have this problem on Tomcat 4.0.1 4.1.24, Win 2K The ClassLoader instance I am using for the getResourceAsStream() calls, is one that I get from one of my classes that is deployed to my webapp in a war file. Logging a toString() on this ClassLoader is shown below. Is it meaningful that it doesn't list my jar files in it's list of repositories ?? --- WebappClassLoader available: delegate: false repositories: /WEB-INF/classes/ required: -- Parent Classloader: StandardClassLoader available: Extension[javax.mail, implementationVendor=Sun Microsystems, Inc., implementationVendorId=com.sun, implementationVer sion=1.2, specificationVendor=Sun Microsystems, Inc., specificationVersion=1.2] delegate: true repositories: file:C:\Tomcat.4.0-retired\classes\ file:C:\Tomcat.4.0-retired\lib\activation.jar file:C:\Tomcat.4.0-retired\lib\catalina.jar file:C:\Tomcat.4.0-retired\lib\jakarta-oro-2.0.2-dev-2.jar file:C:\Tomcat.4.0-retired\lib\jakarta-regexp-1.2.jar file:C:\Tomcat.4.0-retired\lib\mail.jar file:C:\Tomcat.4.0-retired\lib\mailet.jar file:C:\Tomcat.4.0-retired\lib\xml4j.jar required: -- Parent Classloader: StandardClassLoader available: Extension[javax.mail, implementationVendor=Sun Microsystems, Inc., implementationVendorId=com.sun, implementationVer sion=1.2, specificationVendor=Sun Microsystems, Inc., specificationVersion=1.2] delegate: true repositories: file:C:\Tomcat.4.0-retired\common\classes\ file:C:\Tomcat.4.0-retired\common\lib\activation.jar file:C:\Tomcat.4.0-retired\common\lib\jasper-compiler.jar file:C:\Tomcat.4.0-retired\common\lib\jasper-runtime.jar file:C:\Tomcat.4.0-retired\common\lib\jta.jar file:C:\Tomcat.4.0-retired\common\lib\mail.jar file:C:\Tomcat.4.0-retired\common\lib\naming-common.jar file:C:\Tomcat.4.0-retired\common\lib\naming-factory.jar file:C:\Tomcat.4.0-retired\common\lib\naming-resources.jar file:C:\Tomcat.4.0-retired\common\lib\pbclient.jar file:C:\Tomcat.4.0-retired\common\lib\servlet.jar file:C:\Tomcat.4.0-retired\common\lib\tools.jar file:C:\Tomcat.4.0-retired\common\lib\tyrex-0.9.7.0.jar required: -- Parent Classloader: [EMAIL PROTECTED] Help ! Thanks ! Steph - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: WebappClassLoader won't load resource from jar file ?!?
Howdy, He's already doing that. I think the problem is in the argument to ClassLoader#getResourceAsStream, specifically the case of meta-inf should be all uppercase. But to be safe, put your resource in the top level of the jar and try getResourceAsStream(/data.xml). Yoav Shapira Millennium ChemInformatics -Original Message- From: Jay Garala [mailto:[EMAIL PROTECTED] Sent: Tuesday, November 18, 2003 11:40 AM To: 'Tomcat Users List' Subject: RE: WebappClassLoader won't load resource from jar file ?!? Put the JARs in the WEB-INF/lib dir! -Original Message- From: Steph Richardson [mailto:[EMAIL PROTECTED] Sent: Tuesday, November 18, 2003 11:34 AM To: Tomcat Users List Subject: WebappClassLoader won't load resource from jar file ?!? I have a web app containing resource files in several jar files, but I am unable to access the resources at runtime unless they are exploded into the classes directory. When trying to access the resource files using ClassLoader.getResourceAsStream( /meta-inf/com/kvasar/data.xml ) I always get null returned, even though that resource does exist inside a jar file in the web app's WEB-INF/lib directory. If I extract that resource to the classes directory, so I now have WEB-INF/classes/meta-inf/com/kvasar/data.xml, then I get it fine using the exact same path and ClassLoader - it works fine. The Tomcat Class Loader HOW-TO is telling me that it should find it in the jar. I have this problem on Tomcat 4.0.1 4.1.24, Win 2K The ClassLoader instance I am using for the getResourceAsStream() calls, is one that I get from one of my classes that is deployed to my webapp in a war file. Logging a toString() on this ClassLoader is shown below. Is it meaningful that it doesn't list my jar files in it's list of repositories ?? --- - --- WebappClassLoader available: delegate: false repositories: /WEB-INF/classes/ required: -- Parent Classloader: StandardClassLoader available: Extension[javax.mail, implementationVendor=Sun Microsystems, Inc., implementationVendorId=com.sun, implementationVer sion=1.2, specificationVendor=Sun Microsystems, Inc., specificationVersion=1.2] delegate: true repositories: file:C:\Tomcat.4.0-retired\classes\ file:C:\Tomcat.4.0-retired\lib\activation.jar file:C:\Tomcat.4.0-retired\lib\catalina.jar file:C:\Tomcat.4.0-retired\lib\jakarta-oro-2.0.2-dev-2.jar file:C:\Tomcat.4.0-retired\lib\jakarta-regexp-1.2.jar file:C:\Tomcat.4.0-retired\lib\mail.jar file:C:\Tomcat.4.0-retired\lib\mailet.jar file:C:\Tomcat.4.0-retired\lib\xml4j.jar required: -- Parent Classloader: StandardClassLoader available: Extension[javax.mail, implementationVendor=Sun Microsystems, Inc., implementationVendorId=com.sun, implementationVer sion=1.2, specificationVendor=Sun Microsystems, Inc., specificationVersion=1.2] delegate: true repositories: file:C:\Tomcat.4.0-retired\common\classes\ file:C:\Tomcat.4.0-retired\common\lib\activation.jar file:C:\Tomcat.4.0-retired\common\lib\jasper-compiler.jar file:C:\Tomcat.4.0-retired\common\lib\jasper-runtime.jar file:C:\Tomcat.4.0-retired\common\lib\jta.jar file:C:\Tomcat.4.0-retired\common\lib\mail.jar file:C:\Tomcat.4.0-retired\common\lib\naming-common.jar file:C:\Tomcat.4.0-retired\common\lib\naming-factory.jar file:C:\Tomcat.4.0-retired\common\lib\naming-resources.jar file:C:\Tomcat.4.0-retired\common\lib\pbclient.jar file:C:\Tomcat.4.0-retired\common\lib\servlet.jar file:C:\Tomcat.4.0-retired\common\lib\tools.jar file:C:\Tomcat.4.0-retired\common\lib\tyrex-0.9.7.0.jar required: -- Parent Classloader: [EMAIL PROTECTED] Help ! Thanks ! Steph - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
