我已经用POI构建了Grails项目(包括poi-3.7和poi-ooxml-3.7)。我已将这2个外部库添加到项目的BuildConfig.groovy文件中的依赖关系块中。当我编译它时,没有什么奇怪的。但是,当我为该项目调用命令“run-app”时,出现以下堆栈跟踪错误:
Base Directory: <path-to-my-project>
Resolving dependencies...
Dependencies resolved in 5546ms.
Running script D:\_TOOLS\STS\grails-1.3.5\scripts\RunApp.groovy
Environment set to development
Running Grails application..
2011-05-23 18:51:01,225 [main] ERROR context.GrailsContextLoader - Error executing bootstraps: java.lang.LinkageError: loader constraint violation: loader (instance of <bootloader>) previously initiated loading for a different type with name "org/w3c/dom/DOMConfiguration"
org.codehaus.groovy.runtime.InvokerInvocationException: java.lang.LinkageError: loader constraint violation: loader (instance of <bootloader>) previously initiated loading for a different type with name "org/w3c/dom/DOMConfiguration"
at grails.spring.BeanBuilder.invokeBeanDefiningClosure(BeanBuilder.java:723)
at grails.spring.BeanBuilder.beans(BeanBuilder.java:573)
at grails.spring.BeanBuilder.invokeMethod(BeanBuilder.java:519)
at org.grails.tomcat.TomcatServer.start(TomcatServer.groovy:212)
at grails.web.container.EmbeddableServer$start.call(Unknown Source)
at RunApp$_run_closure5_closure12.doCall(RunApp:158)
at RunApp$_run_closure5_closure12.doCall(RunApp)
at _GrailsSettings_groovy$_run_closure10.doCall(_GrailsSettings_groovy:280)
at _GrailsSettings_groovy$_run_closure10.call(_GrailsSettings_groovy)
at RunApp$_run_closure5.doCall(RunApp:149)
at RunApp$_run_closure5.call(RunApp)
at RunApp.runInline(RunApp:116)
at RunApp.this$4$runInline(RunApp)
at RunApp$_run_closure1.doCall(RunApp:59)
at RunApp$_run_closure1.doCall(RunApp:33)
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.Gant.executeTargets(Gant.groovy:589)
Caused by: java.lang.LinkageError: loader constraint violation: loader (instance of <bootloader>) previously initiated loading for a different type with name "org/w3c/dom/DOMConfiguration"
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.spring.DynamicElementReader.invokeMethod(DynamicElementReader.groovy:121)
... 26 more
这是我的配置:
dependencies {
provided ('com.oracle:ojdbc6_g:11.2.0.1.0')
runtime ('org.apache.poi:poi:3.7', 'org.apache.poi:poi-ooxml:3.7')
}
我该怎么做才能解决这个问题?非常感谢!
最佳答案
这是我们经过几个小时的反复来终于解决的问题。简而言之,从poi中排除xmlbeans并创建另一个删除了有问题的类的xmlbeans jar。这是驱除邪恶的链接错误的咒语。
dependencies {
compile ('org.apache.poi:poi-ooxml:3.6') {excludes "xmlbeans"}
}
光盘〜
mkdir xmlbeantmp
cd xmlbeantmp
cp〜/.ivy2/cache/org.apache.xmlbeans/xmlbeans/jars/xmlbeans-2.3.0.jar。
jar xf xmlbeans-2.3.0.jar
光盘组织
rm -rf w3c/
cd ../
rm xmlbean-2.3.0.jar
jar cf xmlbean-2.3.0.jar *
cp xmlbean-2.3.0.jar your_grails_project/lib/。
单击向上回答箭头。 :)
关于grails - java.lang.LinkageError : loader constraint violation in Grails project,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/6097279/