grails - LinkageError 使用数据库迁移插件(加载器先前为不同类型初始化)

Question

尝试通过命令行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)模式下执行此目标时才会发生这种情况。

我已经尝试过具有相同目的的其他版本的插件。

我真的发现这个错误太神秘了，不知道幕后发生了什么或如何开始修复这个，

堆栈跟踪如下:

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)

Answer 1

仅作记录:对我来说，问题是 mx4j 通过 jets3t-plugin 作为依赖项包含在内。 mx4j 好像自带了javax/management/MBeanServer与 javax/management/MBeanServer 冲突的接口(interface)通过 Java SDK/JRE 提供。
排除 mx4j 为我解决了这个问题:
compile 'net.java.dev.jets3t:jets3t:0.9.3', {
excludes 'mx4j'
}