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Re: [Php-java-bridge-users] PHP-Java Bridge Unsatisfied Link Error with own jar/classes
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From: <php...@li...> - 2011-01-14 18:40:55
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Hello Marc, i have another idea. Look at your error message: Fatal error: Uncaught [[o:Exception]:"java.lang. Exception: CreateInstance failed: new SolverPlatform.Problem. Cause: java.lang.UnsatisfiedLinkError: no SolverSDK in java.library.path Maybe the solversdk depends on a native library which you have to put on the library path. No, when i follow down the stacktrace it is obvious that your php code triggered the java runtime to load a native dynamic library (*.dll or *.so). (Use the *.dll files on windows and the *.so files on Linux.) Ok, so your php-java-bridge setup is actually fine and also your php script works correct. Now you must find out which library the solversdk depends on and put it in a folder which is on your library path. I have never used a native library from a web application (war-file). But this should give you some hints where to put the files: http://wiki.apache.org/tomcat/HowTo#I.27m_encountering_classloader_problems_when_using_JNI_under_Tomcat Then restart tomcat. David On Fri, Jan 14, 2011 at 5:38 PM, < php...@li...> wrote: > Hi David, > > Yes, sorry, my original email was not 100% clear on the layout of the jar > file - SolverSDK.jar file unpacks to a directory "SolverPlatform" and then > all the classes underneath including Problem.class, hence the call of just > "SolverPlatform.Problem". I can create a simple java file and instantiate > the class at the command line in the same WEB-INF/Lib directory so it must > be something with trying the same via the JavaBridge. > > Thanks, > > Marc > > On 14 Jan 2011, at 16:30, php...@li...wrote: > > > Hello, > > > > i dont know solversdk, so my infos may not be 100% correct. > > > > I think, if you want to instantiate a java class in php you will have to > use > > the fully qualified class name like this: > > > > <?php > > require_once("http://localhost:8080/JavaBridge/java/Java.inc"); > > $problem = new Java("com.solver.Problem"); > > ?> > > > > This would instantiate the class Problem from the package com.solver. > > But of course i dont know if this is the correct package name, because i > > dont know solversdk. > > > > Maybe a stupid question: Do you know how to find out the package name of > a > > java class? > > If you unpack the solversdk look for the file Problem.class. The package > > name would be the > > directories from the root of the jar contents to this file. In the above > > example it would look > > like this: > > <jar-root>/com/solver/Problem.class > > > > David > > > > > > On Fri, Jan 14, 2011 at 4:28 PM, < > > php...@li...> wrote: > > > >> Hi, > >> > >> Quick bit of support with running what I'm pretty sure is a correctly > >> installed Tomcat 7.0.5 and PHP-JavaBridge installation environment. I am > >> running on Mac OS X 10.6.6, using MAMP (PHP 5.3, Apache 2.0 on port 80 > etc) > >> and have Tomcat 7.0.5 (port 8080) installed. I can run any php code > >> successfully, the Tomcat examples all run successfully and if I deploy > >> JavaBridge.war, copy the JavaBridge directory over to my local htdocs > root > >> (as per installation instructions if you get the FASTCGI error) then I > can > >> also run all the JavaBridge examples successfully. So a vanilla install > is > >> looking good. I can run the following code php script from my htdocs > local > >> root and it works fine as an example: > >> > >> <?php > >> require_once("http://localhost:8080/JavaBridge/java/Java.inc"); > >> $i1 = new Java("java.math.BigInteger", "1"); > >> $i2 = new Java("java.math.BigInteger", "2"); > >> $i3 = $i1->add($i2); > >> echo $i3->toString() . "\n"; > >> ?> > >> > >> So I now move onto wanting to instantiate classes from my own jar file > >> called SolverSDK.jar. As per the installation instructions, I grabbed a > copy > >> of JavaBridge.war, exploded it, add in my jar file to the WEB-INF/lib > >> directory, re-create the war file using "jar -cvf JavaBridge.war *", > >> un-deploy the existing JavaBridge app in Tomcat, copy in my new one and > >> re-start Tomcat. The updated war file deploys fine and I can run the > above > >> sample script again all ok. However, when I try to run the below simple > >> script: > >> > >> <?php > >> require_once("http://localhost:8080/JavaBridge/java/Java.inc"); > >> $problem = new Java("SolverPlatform.Problem"); > >> ?> > >> > >> I get the following error: > >> > >> Fatal error: Uncaught [[o:Exception]:"java.lang.Exception: > CreateInstance > >> failed: new SolverPlatform.Problem. Cause: > java.lang.UnsatisfiedLinkError: > >> no SolverSDK in java.library.path VM: 1.6.0_22@http://www.apple.com/" > at: > >> #-36 java.lang.ClassLoader.loadLibrary(ClassLoader.java:1754) #-35 > >> java.lang.Runtime.loadLibrary0(Runtime.java:823) #-34 > >> java.lang.System.loadLibrary(System.java:1045) #-33 > >> SolverPlatform.Problem.(Unknown Source) #-32 > java.lang.Class.forName0(Native > >> Method) #-31 java.lang.Class.forName(Class.java:247) #-30 > >> php.java.bridge.Util.classForName(Util.java:1518) #-29 > >> php.java.bridge.JavaBridge.CreateObject(JavaBridge.java:445) #-28 > >> php.java.bridge.Request.handleRequest(Request.java:458) #-27 > >> php.java.bridge.Request.handleOneRequest(Request.java:510) #-26 > >> > php.java.servlet.PhpJavaServlet.handleLocalConnection(PhpJavaServlet.java:202) > >> #-25 php.java.servlet.PhpJavaServlet.handlePut(PhpJavaServlet.java:250) > #-24 > >> php.java.servlet.PhpJavaServlet.doPut(PhpJavaServlet.java:261) #-23 > >> javax.servlet.http.HttpServl in > >> http://localhost:8080/JavaBridge/java/Java.inc on line 195 > >> > >> A browser refresh then results in the good old ClassNotFound error due > >> since I would assume to the need for only one class-loader. > >> > >> The SolverSDK.jar file has the correct layout when exploded, i.e. > >> SolverPlatform directory and then all the classes etc. It relies on a > file > >> called "libSolverSDK.dylib" which is also included within the updated > war > >> file in the same directory. I have tried everything I can think of, > >> including forcing the classpath in the Tomcat config file, setenv.sh > etc. I > >> have even ensured that DYLD_LIBRARY_PATH is set in a desperate attempt > >> though I know this should have no effect within Tomcat. I am pretty > familiar > >> with Java and PHP but for the life of me, I can see no reason why I am > >> getting this simple error. I have, as per the video demo on the site, > even > >> tried using the classes rather than the jar itself, in a newly created > >> directory WEB-INF/classes but again after redeploying, I get the same > error. > >> > >> I have trawled through the mailing list archive and the web but not got > >> anywhere. Any help would be greatly appreciated. > >> > >> Regards, > >> > >> Marc > >> > >> The information contained in this E-mail is confidential. It is intended > >> only for the stated addressee(s) and access to it by any other person is > >> unauthorised. If you are not an addressee, you must not disclose, copy, > >> circulate or in any other way use or rely on the information contained > in > >> this E-mail. Such unauthorised use may be unlawful. If you have received > >> this E-mail in error, please inform us immediately and delete it and all > >> copies from your system. > >> > >> > >> > ------------------------------------------------------------------------------ > >> Protect Your Site and Customers from Malware Attacks > >> Learn about various malware tactics and how to avoid them. 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Understand > > malware threats, the impact they can have on your business, and how you > > can protect your company and customers by using code signing. > > http://p.sf.net/sfu/oracle-sfdevnl > > _______________________________________________ > > php-java-bridge-users mailing list > > php...@li... > > https://lists.sourceforge.net/lists/listinfo/php-java-bridge-users > > > Mob: +44 797 329 5617 > > The information contained in this E-mail is confidential. It is intended > only for the stated addressee(s) and access to it by any other person is > unauthorised. If you are not an addressee, you must not disclose, copy, > circulate or in any other way use or rely on the information contained in > this E-mail. Such unauthorised use may be unlawful. If you have received > this E-mail in error, please inform us immediately and delete it and all > copies from your system. > > > > ------------------------------------------------------------------------------ > Protect Your Site and Customers from Malware Attacks > Learn about various malware tactics and how to avoid them. Understand > malware threats, the impact they can have on your business, and how you > can protect your company and customers by using code signing. > http://p.sf.net/sfu/oracle-sfdevnl > _______________________________________________ > php-java-bridge-users mailing list > php...@li... > https://lists.sourceforge.net/lists/listinfo/php-java-bridge-users > |
