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Grails application does not start

After installing the export plugin, I can not start the grails application and get this

java.lang.LinkageError: loader constraint violation: loader (instance of <bootloader>) previously initiated loading for a different type with name "org/xml/sax/SAXParseException"
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2427)
at java.lang.Class.getDeclaredMethods(Class.java:1791)
at java.security.AccessController.doPrivileged(Native Method)
at org.codehaus.groovy.util.LazyReference.getLocked(LazyReference.java:46)
at org.codehaus.groovy.util.LazyReference.get(LazyReference.java:33)
at grails.util.PluginBuildSettings.getPluginInfos(PluginBuildSettings.groovy:123)
at grails.util.PluginBuildSettings.getPluginInfos(PluginBuildSettings.groovy)
at grails.util.PluginBuildSettings$getPluginInfos.callCurrent(Unknown Source)
at grails.util.PluginBuildSettings.getPluginInfo(PluginBuildSettings.groovy:167)
at grails.util.PluginBuildSettings$getPluginInfo.callCurrent(Unknown Source)
at grails.util.PluginBuildSettings.getPluginInfoForSource(PluginBuildSettings.groovy:208)
at org.codehaus.groovy.transform.ASTTransformationVisitor$3.call(ASTTransformationVisitor.java:302)
at org.codehaus.groovy.control.CompilationUnit.applyToSourceUnits(CompilationUnit.java:824)
at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:521)
at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:497)
at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:474)
at _GrailsEvents_groovy.run(_GrailsEvents_groovy:54)
at _GrailsEvents_groovy$run.call(Unknown Source)
at _GrailsClean_groovy$run.call(Unknown Source)
at _GrailsClean_groovy.run(_GrailsClean_groovy:29)
at _GrailsClean_groovy$run.call(Unknown Source)
at _GrailsPlugins_groovy$run.call(Unknown Source)
at _GrailsPlugins_groovy.run(_GrailsPlugins_groovy:32)
at _GrailsPlugins_groovy$run.call(Unknown Source)
at _GrailsRun_groovy$run.call(Unknown Source)
at _GrailsRun_groovy.run(_GrailsRun_groovy:31)
at _GrailsRun_groovy$run.call(Unknown Source)
at RunApp.run(RunApp.groovy:25)
at RunApp$run.call(Unknown Source)
at gant.Gant.prepareTargets(Gant.groovy:606)
Error loading event script from file [/home/natalia/.grails/1.3.7/projects/MEM1.1/plugins/tomcat-1.3.7/scripts/_Events.groovy] loader constraint violation: loader (instance of <bootloader>) previously initiated loading for a different type with name "org/xml/sax/SAXParseException"
Error executing script RunApp: loader constraint violation: loader (instance of <bootloader>) previously initiated loading for a different type with name "org/xml/sax/SAXParseException"
java.lang.LinkageError: loader constraint violation: loader (instance of <bootloader>) previously initiated loading for a different type with name "org/xml/sax/SAXParseException"
    at java.lang.Class.getDeclaredMethods0(Native Method)
    at java.lang.Class.privateGetDeclaredMethods(Class.java:2427)
    at java.lang.Class.getDeclaredMethods(Class.java:1791)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.codehaus.groovy.util.LazyReference.getLocked(LazyReference.java:46)
    at org.codehaus.groovy.util.LazyReference.get(LazyReference.java:33)
    at grails.util.PluginBuildSettings.getPluginInfos(PluginBuildSettings.groovy:123)
    at grails.util.PluginBuildSettings.getPluginInfos(PluginBuildSettings.groovy)
    at grails.util.PluginBuildSettings$getPluginInfos.callCurrent(Unknown Source)
    at grails.util.PluginBuildSettings.getPluginInfoForName(PluginBuildSettings.groovy:180)
    at grails.util.PluginBuildSettings$getPluginInfoForName.call(Unknown Source)
    at _PluginDependencies_groovy$_run_closure1.doCall(_PluginDependencies_groovy:66)
    at _PackagePlugins_groovy$_run_closure2.doCall(_PackagePlugins_groovy:69)
    at _GrailsPackage_groovy$_run_closure2.doCall(_GrailsPackage_groovy:81)
    at RunApp$_run_closure1.doCall(RunApp.groovy:28)
    at gant.Gant$_dispatch_closure5.doCall(Gant.groovy:381)
    at gant.Gant$_dispatch_closure7.doCall(Gant.groovy:415)
    at gant.Gant$_dispatch_closure7.doCall(Gant.groovy)
    at gant.Gant.withBuildListeners(Gant.groovy:427)
    at gant.Gant.this$2$withBuildListeners(Gant.groovy)
    at gant.Gant$this$2$withBuildListeners.callCurrent(Unknown Source)
    at gant.Gant.dispatch(Gant.groovy:415)
    at gant.Gant.this$2$dispatch(Gant.groovy)
    at gant.Gant.invokeMethod(Gant.groovy)
    at gant.Gant.executeTargets(Gant.groovy:590)
    at gant.Gelpant.executeTargets(Gant.groovy:589)
Error executing script RunApp: loader constraint violation: loader (instance of <bootloader>) previously initiated loading for a different type with name "org/xml/sax/SAXParseException"

What's wrong? Please, help...

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3 answers

This seems to be the result of the addon of class path ...

Two dependencies link the same jar with different versions

Check your dependencies, identify the culprit (which seems to be Sax Parser) and delete this link in your BuildConfig.groovy

Greetings

Grooveek

+2
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Adding this to BuildConfig.groovy worked for me:

inherits("global") {
  excludes "xml-apis"
}

Source: http://arrogantprogrammer.blogspot.com.ar/2010/07/grails-linkageerror-for.html

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SaxParseException JVM, , .

Run grails "dependency-report" to find out which of the jar is causing the problem.

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