Hello, I dont know what the problem is, but I know this kind of problems. I would try the following things:
1.Check the different classpaths (e.g. there might be a different version of a jar in ANT than on the classpath of your program etc...) 2.Increase the loglevel to verbose and see what ANT tells you 3.It happens inside your code? Good: Add logs intto your code to see what happens 4.And finally: Start Ant programatically with Java in Eclipse, to use the Java debugger. (This is a bit tricky, but a short time ago, I had a lot of challenges in one of my ANT tasks, and debugging it helped a lot!) If you want to do that, I can post the Java class I use (I changed MAIN.java until it did, what I wanted). Greetings Juergen -- Jürgen Knuplesch www.icongmbh.de icon Systemhaus GmbH Tel. +49 711 806098-275 Sophienstraße 40 D-70178 Stuttgart Fax. +49 711 806098-299 Geschäftsführer: Uwe Seltmann HRB Stuttgart 17655 USt-IdNr.: DE 811944121 -----Ursprüngliche Nachricht----- Von: Rhino [mailto:[email protected]] Gesendet: Dienstag, 23. Februar 2010 18:17 An: ant-user Betreff: Logging problem using Ant Hi, I am having an odd problem using Ant. Whenever my Java program tries to create a new instance of java.util.logging.FileHandler, I get a java.io.IOException that says "Couldn't get lock for log2\baz.log.xml". The weird part of this problem is that I get this error when I am running Ant but NOT when I simply execute the program in Eclipse. I am running Eclipse 3.5.1 Galileo on Windows XP with SP 2. This version of Eclipse contains Ant 1.7.1. When I run the program from an Ant script within Eclipse OR from the Windows command line (using Ant 1.8.0), I get the error that I mentioned. However, when I run the program as a Java application from within Eclipse, it works fine and does not generate this error. I'm baffled and would appreciate some help to prevent this error. I've created a simple example and an Ant build file that illustrates the problem. My project is called Logging and it is a regular Java project in Eclipse. Within the package com.foo.baz2, which is in my src folder in the Logging project, I have the following classes: * Supremo, which is the driver program * Alpha, which is the class invoked from Supremo which actually writes to the log file Here is the source code for Supremo: ================================ package com.foo.baz2; import java.io.File; import java.io.IOException; import java.util.logging.FileHandler; import java.util.logging.Handler; import java.util.logging.Level; import java.util.logging.Logger; public class Supremo { /** * The name of this class. */ private final String CLASS_NAME = getClass().getName(); /** * The logger that will log error messages in this class. */ private Logger logger = null; /** * The file handler used by this logger. */ private Handler logFileHandler = null; /** * @param args */ public static void main(String[] args) { new Supremo(); System.out.println("=== Supremo ends ==="); } public Supremo() { configureLogger(); new Alpha(logger).writeText(); } /** * Method configureLogger() configures the logger(s) used by this program. * * <p>Additional comments about method configureLogger().</p> */ private final void configureLogger() { String METHOD_NAME = "configureLogger()"; //$NON-NLS-1$ /* Create the logger. */ this.logger = Logger.getLogger(CLASS_NAME); /* Create a file handler for the logger. */ String logFile = "log2" + File.separator + "baz.log.xml"; try { this.logFileHandler = new FileHandler(logFile); } catch (IOException io_excp) { System.err.println(this.CLASS_NAME + "." + METHOD_NAME + " - Couldn't create FileHandler for logger " + this.CLASS_NAME + " using file " + logFile + ". Error: " + io_excp); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ io_excp.printStackTrace(); return; } this.logger.addHandler(this.logFileHandler); /* Set the logging level. */ this.logger.setLevel(Level.FINEST); } } ================================ Here is the source code for Alpha: ================================ package com.foo.baz2; import java.util.logging.Logger; public class Alpha { /** * The name of this class. */ private final String CLASS_NAME = getClass().getName(); /** * The logger that will log error messages in this class. */ private Logger logger = null; public Alpha() { super(); } public Alpha(Logger logger) { super(); this.logger = logger; } public void writeText() { final String METHOD_NAME = "writeText()"; System.out.println(CLASS_NAME); logger.entering(CLASS_NAME, METHOD_NAME); } } ================================ Here is the build file, which is named build2.xml: ================================ <?xml version="1.0" ?><project name="Logging" default="buildall" basedir="."> <description>Compile and run the Baz program. </description> <property name="domain.slashes" value="com\foo" description="The domain name written as a path."/> <property name="jdkbin" value="c:\Program Files\Java\jdk1.6.0_18\bin" description="The path to the Java JDK binaries."/> <property name="workspace351" value="c:\eclipse\workspace" description="The path to the Eclipse 3.5.1 workspace."/> <property name="baz.proj" value="Logging" description="The name of the Baz project."/> <property name="baz.pkg" value="${domain.slashes}\baz2" description="The name of the package containing the Baz code."/> <property name="compiler.path" value="${jdkbin}\javac" description="The path of the Java 1.6.0_18 compiler."/> <property name="baz.src" value="${workspace351}\${baz.proj}\src" description="The path to the source files for the Baz code."/> <property name="baz.bin" value="${workspace351}\${baz.proj}\bin" description="The path to the class files for the Baz code."/> <property name="baz.output.dir" value="${workspace351}\${baz.proj}\output" description="The path to the output directory for the Baz project."/> <!--================================================================== Establish patternsets. ==================================================================--> <patternset id="ps.baz" description="The project-specific Baz code."> <include name="${baz.pkg}\*.*"/> </patternset> <!--================================================================== Compile all of the Java code, both project-specific and common. ==================================================================--> <target name="compile" description="Compile the Java code."> <javac srcdir="${baz.src}" destdir="${baz.bin}" compiler="modern" fork="yes" verbose="no" debug="on" debuglevel="lines,vars,source" deprecation="yes" executable="${compiler.path}" source="1.6" description="Compile the code in the baz packages."> <classpath> <pathelement path="${baz.bin}"/> </classpath> <patternset refid="ps.baz"/> </javac> </target> <!--================================================================== Run the program via Ant. ==================================================================--> <target name="run" description="Run the program."> <echo message="Run the program."/> <java classname="com.foo.baz2.Supremo" fork="false" description="Execute the Supremo program."> <classpath> <pathelement path="${baz.bin}"/> </classpath> </java> </target> <!--================================================================== Do the complete build. ==================================================================--> <target name="buildall" depends="compile,run" description="Tasks that make up a complete build."> <echo message="The build has ended successfully."/> </target> </project> ================================ Here is the output from the Ant build when it is run in Eclipse using Ant 1.7.1: ================================ Buildfile: C:\eclipse\workspace\Logging\xml\build2.xml compile: run: [echo] Run the program. [java] com.foo.baz2.Supremo.configureLogger() - Couldn't create FileHandler for logger com.foo.baz2.Supremo using file log2\baz.log.xml. Error: java.io.IOException: Couldn't get lock for log2\baz.log.xml [java] java.io.IOException: Couldn't get lock for log2\baz.log.xml [java] at java.util.logging.FileHandler.openFiles(Unknown Source) [java] at java.util.logging.FileHandler.<init>(Unknown Source) [java] at com.foo.baz2.Supremo.configureLogger(Supremo.java:61) [java] at com.foo.baz2.Supremo.<init>(Supremo.java:40) [java] at com.foo.baz2.Supremo.main(Supremo.java:33) [java] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [java] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) [java] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) [java] at java.lang.reflect.Method.invoke(Unknown Source) [java] at org.apache.tools.ant.taskdefs.ExecuteJava.run(ExecuteJava.java:217) [java] at org.apache.tools.ant.taskdefs.ExecuteJava.execute(ExecuteJava.java:152) [java] at org.apache.tools.ant.taskdefs.Java.run(Java.java:764) [java] at org.apache.tools.ant.taskdefs.Java.executeJava(Java.java:218) [java] at org.apache.tools.ant.taskdefs.Java.executeJava(Java.java:132) [java] at org.apache.tools.ant.taskdefs.Java.execute(Java.java:105) [java] at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288) [java] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [java] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) [java] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) [java] at java.lang.reflect.Method.invoke(Unknown Source) [java] at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) [java] at org.apache.tools.ant.Task.perform(Task.java:348) [java] at org.apache.tools.ant.Target.execute(Target.java:357) [java] at org.apache.tools.ant.Target.performTasks(Target.java:385) [java] at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1337) [java] at org.apache.tools.ant.Project.executeTarget(Project.java:1306) [java] at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41) [java] at org.eclipse.ant.internal.ui.antsupport.EclipseDefaultExecutor.executeTargets(EclipseDefaultExecutor.java:32) [java] at org.apache.tools.ant.Project.executeTargets(Project.java:1189) [java] at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.run(InternalAntRunner.java:423) [java] at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.main(InternalAntRunner.java:137) [java] com.foo.baz2.Alpha [java] com.foo.baz2.Beta [java] com.foo.baz2.Gamma [java] === Supremo ends === buildall: [echo] The build has ended successfully. BUILD SUCCESSFUL Total time: 313 milliseconds ================================ Does anyone know why I'm having this problem? -- Rhino --------------------------------------------------------------------- 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]
