Question

当我尝试在 AIX机器上运行我的项目时，我得到 java.lang.IncompatibleClassChangeError 。

该项目使用 JAXB API（2.0）生成XML文件。
安装在 Windows XP 和中的开发环境使用JDK1.5.0 （与AIX机器相同的JDK）。
在开发环境中，项目运作良好。但是在AIX机器上它不起作用（抛出异常）。

当我尝试运行项目时，这是堆栈跟踪：

........................./build.xml:176: java.lang.IncompatibleClassChangeError
at com.sun.xml.bind.v2.model.impl.ElementPropertyInfoImpl$1.size(ElementPropertyInfoImpl.java:82)
at java.util.AbstractList$Itr.hasNext(AbstractList.java:431)
at com.sun.xml.bind.v2.model.impl.ModelBuilder.getClassInfo(ModelBuilder.java:260)
at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.getClassInfo(RuntimeModelBuilder.java:104)
at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.getClassInfo(RuntimeModelBuilder.java:85)
at com.sun.xml.bind.v2.model.impl.ModelBuilder.getClassInfo(ModelBuilder.java:214)
at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.getClassInfo(RuntimeModelBuilder.java:99)
at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.getClassInfo(RuntimeModelBuilder.java:85)
at com.sun.xml.bind.v2.model.impl.ModelBuilder.getTypeInfo(ModelBuilder.java:320)
at com.sun.xml.bind.v2.model.impl.RegistryInfoImpl.<init>(RegistryInfoImpl.java:103)
at com.sun.xml.bind.v2.model.impl.ModelBuilder.addRegistry(ModelBuilder.java:362)
at com.sun.xml.bind.v2.model.impl.ModelBuilder.getTypeInfo(ModelBuilder.java:332)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl.getTypeInfoSet(JAXBContextImpl.java:460)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:298)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:141)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl$JAXBContextBuilder.build(JAXBContextImpl.java:1163)
at com.sun.xml.bind.v2.ContextFactory.createContext(ContextFactory.java:145)
at com.sun.xml.bind.v2.ContextFactory.createContext(ContextFactory.java:236)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:615)
at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:186)
at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:146)
at javax.xml.bind.ContextFinder.find(ContextFinder.java:348)
at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:446)
at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:409)
at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:313)
at gen.utils.Util.unmarshalling(Unknown Source)
at gen.utils.Util.mvtConfig(Unknown Source)
at gen.utils.Util.mvtGenConfig(Unknown Source)
at gen.start.StartGen.mvtGeneration(Unknown Source)
at gen.start.StartGen.start(Unknown Source)
at gen.start.StartGen.main(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:615)
at org.apache.tools.ant.taskdefs.ExecuteJava.run(ExecuteJava.java:217)
at org.apache.tools.ant.taskdefs.ExecuteJava.execute(ExecuteJava.java:152)
at org.apache.tools.ant.taskdefs.Java.run(Java.java:771)
at org.apache.tools.ant.taskdefs.Java.executeJava(Java.java:221)
at org.apache.tools.ant.taskdefs.Java.executeJava(Java.java:135)
at org.apache.tools.ant.taskdefs.Java.execute(Java.java:108)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:615)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:390)
at org.apache.tools.ant.Target.performTasks(Target.java:411)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)
at org.apache.tools.ant.Project.executeTarget(Project.java:1368)
at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at org.apache.tools.ant.Project.executeTargets(Project.java:1251)
at org.apache.tools.ant.Main.runBuild(Main.java:809)
at org.apache.tools.ant.Main.startAnt(Main.java:217)
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:280)
at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109)

请帮忙。感谢。

Answer 1

检查AIX上的类路径，确保使用的是兼容版本的jaxb-api和jaxb-impl库。当只有次要版本相差一个增量时（例如2.2.5对2.2.6），我遇到了IncompatibleClassChangeError。

要检查您正在使用的每个库的版本以及兼容性所需的版本，请查看位于每个jar文件中META-INF目录中的清单文件。 jaxb-impl清单声明了（除了它自己的版本）规范版本，它是它需要的jaxb-api jar的版本。从v2.2.2开始，jaxb-api和jaxb-impl的兼容实例的版本号不再匹配：例如jaxb-impl v2.2.4与jaxb-api v2.2.3兼容

我只有使用JAXB的Sun实现（com.sun.xml.bind）的经验，所以如果您使用不同的实现，这可能不适用。

在Unix AIX上运行JAXB时出现IncompatibleClassChangeError

1 个答案: