尝试在命令行中使用数据库迁移插件1.3.6时出现奇怪的错误
grails --stacktrace dbm-generate-gorm-changelog changelog.groovy
错误是
Error Error executing script DbmGenerateGormChangelog: loader constraint violation: loader (instance of <bootloader>) previously initiated loading for a different type with name "javax/management/MBeanServer" (NOTE: Stack trace has been filtered. Use --verbose to see entire trace.)
java.lang.LinkageError: loader constraint violation: loader (instance of <bootloader>) previously initiated loading for a different type with name "javax/management/MBeanServer"
仅当我尝试在测试或生产(嵌入式tomcat)模式下非执行此目标时，才会发生这种情况。
我尝试了具有相同目的的其他版本的插件。
我真的发现错误太含糊，无法确定幕后情况或如何启动Fixint，
Stacktrace如下:
Error executing script DbmGenerateGormChangelog: loader constraint violation: loader (instance of <bootloader>) previously initiated loading for a different type with name "javax/management/MBeanServer"
java.lang.LinkageError: loader constraint violation: loader (instance of <bootloader>) previously initiated loading for a different type with name "javax/management/MBeanServer"
at org.springframework.jmx.support.JmxUtils.locateMBeanServer(JmxUtils.java:111)
at org.springframework.jmx.support.JmxUtils.locateMBeanServer(JmxUtils.java:76)
at org.springframework.jmx.support.JmxUtils$locateMBeanServer.call(Unknown Source)
at grails.spring.BeanBuilder.invokeBeanDefiningClosure(BeanBuilder.java:754)
at grails.spring.BeanBuilder.beans(BeanBuilder.java:584)
at grails.spring.BeanBuilder.invokeMethod(BeanBuilder.java:527)
at _GrailsBootstrap$_run_closure2.doCall(_GrailsBootstrap.groovy:40)
at org.codehaus.gant.GantMetaClass.invokeMethod(GantMetaClass.java:133)
at org.codehaus.gant.GantBinding$_initializeGantBinding_closure5_closure16_closure18.doCall(GantBinding.groovy:185)
at org.codehaus.gant.GantBinding$_initializeGantBinding_closure5_closure16_closure18.doCall(GantBinding.groovy)
at org.codehaus.gant.GantBinding.withTargetEvent(GantBinding.groovy:90)
at org.codehaus.gant.GantBinding.this$4$withTargetEvent(GantBinding.groovy)
at org.codehaus.gant.GantBinding$_initializeGantBinding_closure5_closure16.doCall(GantBinding.groovy:185)
at org.codehaus.gant.GantBinding$_initializeGantBinding_closure5_closure16.doCall(GantBinding.groovy)
at org.codehaus.gant.GantMetaClass.invokeMethod(GantMetaClass.java:133)
at _GrailsBootstrap$_run_closure6.doCall(_GrailsBootstrap.groovy:64)
at org.codehaus.gant.GantMetaClass.invokeMethod(GantMetaClass.java:133)
at org.codehaus.gant.GantBinding$_initializeGantBinding_closure5_closure16_closure18.doCall(GantBinding.groovy:185)
at org.codehaus.gant.GantBinding$_initializeGantBinding_closure5_closure16_closure18.doCall(GantBinding.groovy)
at org.codehaus.gant.GantBinding.withTargetEvent(GantBinding.groovy:90)
at org.codehaus.gant.GantBinding.this$4$withTargetEvent(GantBinding.groovy)
at org.codehaus.gant.GantBinding$_initializeGantBinding_closure5_closure16.doCall(GantBinding.groovy:185)
at org.codehaus.gant.GantBinding$_initializeGantBinding_closure5_closure16.doCall(GantBinding.groovy)
at org.codehaus.gant.GantMetaClass.processClosure(GantMetaClass.java:81)
at org.codehaus.gant.GantMetaClass.processArgument(GantMetaClass.java:95)
at org.codehaus.gant.GantMetaClass.invokeMethod(GantMetaClass.java:128)
at _DatabaseMigrationCommon_groovy$_run_closure1.doCall(_DatabaseMigrationCommon_groovy:25)
at org.codehaus.gant.GantMetaClass.invokeMethod(GantMetaClass.java:133)
at org.codehaus.gant.GantBinding$_initializeGantBinding_closure5_closure16_closure18.doCall(GantBinding.groovy:185)
at org.codehaus.gant.GantBinding$_initializeGantBinding_closure5_closure16_closure18.doCall(GantBinding.groovy)
at org.codehaus.gant.GantBinding.withTargetEvent(GantBinding.groovy:90)
at org.codehaus.gant.GantBinding.this$4$withTargetEvent(GantBinding.groovy)
at org.codehaus.gant.GantBinding$_initializeGantBinding_closure5_closure16.doCall(GantBinding.groovy:185)
at org.codehaus.gant.GantBinding$_initializeGantBinding_closure5_closure16.doCall(GantBinding.groovy)
at org.codehaus.gant.GantMetaClass.processClosure(GantMetaClass.java:81)
at org.codehaus.gant.GantMetaClass.processArgument(GantMetaClass.java:95)
at org.codehaus.gant.GantMetaClass.invokeMethod(GantMetaClass.java:128)
at DbmGenerateGormChangelog$_run_closure1.doCall(DbmGenerateGormChangelog:23)
at org.codehaus.gant.GantMetaClass.invokeMethod(GantMetaClass.java:133)
at org.codehaus.gant.GantBinding$_initializeGantBinding_closure5_closure16_closure18.doCall(GantBinding.groovy:185)
at org.codehaus.gant.GantBinding$_initializeGantBinding_closure5_closure16_closure18.doCall(GantBinding.groovy)
at org.codehaus.gant.GantBinding.withTargetEvent(GantBinding.groovy:90)
at org.codehaus.gant.GantBinding.this$4$withTargetEvent(GantBinding.groovy)
at org.codehaus.gant.GantBinding$_initializeGantBinding_closure5_closure16.doCall(GantBinding.groovy:185)
at org.codehaus.gant.GantBinding$_initializeGantBinding_closure5_closure16.doCall(GantBinding.groovy)
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.dispatch(Gant.groovy:415)
at gant.Gant.this$2$dispatch(Gant.groovy)
at gant.Gant.invokeMethod(Gant.groovy)
at gant.Gant.executeTargets(Gant.groovy:591)
at gant.Gant.executeTargets(Gant.groovy:590)
最佳答案
仅作记录:对我来说，问题是通过jets3t-plugin将mx4j作为依赖项包括在内。 mx4j似乎带来了自己的javax/management/MBeanServer接口(interface)，该接口(interface)与通过Java SDK / JRE提供的javax/management/MBeanServer冲突。
不包括mx4j为我解决了这个问题:compile 'net.java.dev.jets3t:jets3t:0.9.3', { excludes 'mx4j'}
关于grails - 使用数据库迁移插件的LinkageError(先前为其他类型初始化的加载程序)，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/27962136/