com.sum.xml.internal.stream.XMLInputFactoryImpl :ClassCastException不能强制转换为org.codehaus.stax2.XMLInputFactory2

Question

我正在尝试在Android Studio的一个插件中使用Woodstox解析器，这个插件是我使用gradle在IntelliJ中构建的。

当我试图获取一个XMLInputFactory2实例时，我得到了下面的错误。

XMLInputFactory2 xif = (XMLInputFactory2) XMLInputFactory.newInstance();

java.lang.ClassCastException: com.sun.xml.internal.stream.XMLInputFactoryImpl cannot be cast to org.codehaus.stax2.XMLInputFactory2
    at com.insidesecure.plugin.structure.CPSettingsConfigurable.apply(CPSettingsConfigurable.java:108)
    at com.intellij.openapi.options.ex.ConfigurableWrapper.apply(ConfigurableWrapper.java:165)
    at com.intellij.openapi.options.newEditor.ConfigurableEditor.apply(ConfigurableEditor.java:317)
    at com.intellij.openapi.options.newEditor.SettingsEditor$5.apply(SettingsEditor.java:169)
    at com.intellij.openapi.options.newEditor.ConfigurableEditor$2.actionPerformed(ConfigurableEditor.java:65)
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
    at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
    at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
    at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
    at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
    at java.awt.Component.processMouseEvent(Component.java:6550)
    at javax.swing.JComponent.processMouseEvent(JComponent.java:3325)
    at java.awt.Component.processEvent(Component.java:6315)
    at java.awt.Container.processEvent(Container.java:2239)
    at java.awt.Component.dispatchEventImpl(Component.java:4899)
    at java.awt.Container.dispatchEventImpl(Container.java:2297)
    at java.awt.Component.dispatchEvent(Component.java:4721)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4904)
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4535)
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4476)
    at java.awt.Container.dispatchEventImpl(Container.java:2283)
    at java.awt.Window.dispatchEventImpl(Window.java:2746)
    at java.awt.Component.dispatchEvent(Component.java:4721)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:766)
    at java.awt.EventQueue.access$500(EventQueue.java:98)
    at java.awt.EventQueue$3.run(EventQueue.java:715)
    at java.awt.EventQueue$3.run(EventQueue.java:709)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:84)
    at java.awt.EventQueue$4.run(EventQueue.java:739)
    at java.awt.EventQueue$4.run(EventQueue.java:737)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:736)
    at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:729)
    at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:674)
    at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:373)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:109)
    at java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:190)
    at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:235)
    at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:233)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:233)
    at java.awt.Dialog.show(Dialog.java:1077)
    at com.intellij.openapi.ui.impl.DialogWrapperPeerImpl$MyDialog.show(DialogWrapperPeerImpl.java:706)
    at com.intellij.openapi.ui.impl.DialogWrapperPeerImpl.show(DialogWrapperPeerImpl.java:437)
    at com.intellij.openapi.ui.DialogWrapper.invokeShow(DialogWrapper.java:1682)
    at com.intellij.openapi.ui.DialogWrapper.show(DialogWrapper.java:1631)
    at com.intellij.openapi.options.newEditor.SettingsDialog.lambda$show$0(SettingsDialog.java:73)
    at com.intellij.openapi.application.TransactionGuardImpl.runSyncTransaction(TransactionGuardImpl.java:88)
    at com.intellij.openapi.application.TransactionGuardImpl.submitTransactionAndWait(TransactionGuardImpl.java:153)
    at com.intellij.openapi.options.newEditor.SettingsDialog.show(SettingsDialog.java:73)
    at com.intellij.ide.actions.ShowSettingsUtilImpl.showSettingsDialog(ShowSettingsUtilImpl.java:84)
    at com.intellij.ide.actions.ShowSettingsAction.perform(ShowSettingsAction.java:54)
    at com.intellij.ide.actions.ShowSettingsAction.actionPerformed(ShowSettingsAction.java:41)
    at com.intellij.openapi.actionSystem.ex.ActionUtil$1.run(ActionUtil.java:261)
    at com.intellij.openapi.actionSystem.ex.ActionUtil.performActionDumbAware(ActionUtil.java:278)
    at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.lambda$actionPerformed$0(ActionMenuItem.java:292)
    at com.intellij.openapi.wm.impl.FocusManagerImpl.runOnOwnContext(FocusManagerImpl.java:283)
    at com.intellij.openapi.wm.impl.IdeFocusManagerImpl.runOnOwnContext(IdeFocusManagerImpl.java:107)
    at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.actionPerformed(ActionMenuItem.java:282)
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
    at com.intellij.openapi.actionSystem.impl.ActionMenuItem.lambda$fireActionPerformed$0(ActionMenuItem.java:111)
    at com.intellij.openapi.application.TransactionGuardImpl.runSyncTransaction(TransactionGuardImpl.java:88)
    at com.intellij.openapi.application.TransactionGuardImpl.lambda$submitTransaction$1(TransactionGuardImpl.java:111)
    at com.intellij.openapi.application.TransactionGuardImpl.submitTransaction(TransactionGuardImpl.java:120)
    at com.intellij.openapi.application.TransactionGuard.submitTransaction(TransactionGuard.java:121)
    at com.intellij.openapi.actionSystem.impl.ActionMenuItem.fireActionPerformed(ActionMenuItem.java:111)
    at com.intellij.ui.plaf.beg.BegMenuItemUI.doClick(BegMenuItemUI.java:524)
    at com.intellij.ui.plaf.beg.BegMenuItemUI.access$300(BegMenuItemUI.java:35)
    at com.intellij.ui.plaf.beg.BegMenuItemUI$MyMouseInputHandler.mouseReleased(BegMenuItemUI.java:546)
    at java.awt.Component.processMouseEvent(Component.java:6550)
    at javax.swing.JComponent.processMouseEvent(JComponent.java:3325)
    at java.awt.Component.processEvent(Component.java:6315)
    at java.awt.Container.processEvent(Container.java:2239)
    at java.awt.Component.dispatchEventImpl(Component.java:4899)
    at java.awt.Container.dispatchEventImpl(Container.java:2297)
    at java.awt.Component.dispatchEvent(Component.java:4721)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4904)
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4535)
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4476)
    at java.awt.Container.dispatchEventImpl(Container.java:2283)
    at java.awt.Window.dispatchEventImpl(Window.java:2746)
    at java.awt.Component.dispatchEvent(Component.java:4721)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:766)
    at java.awt.EventQueue.access$500(EventQueue.java:98)
    at java.awt.EventQueue$3.run(EventQueue.java:715)
    at java.awt.EventQueue$3.run(EventQueue.java:709)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:84)
    at java.awt.EventQueue$4.run(EventQueue.java:739)
    at java.awt.EventQueue$4.run(EventQueue.java:737)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:736)
    at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:729)
    at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:674)
    at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:373)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

我已经遇到过类似问题的帖子，但没有什么能帮助我克服这个问题。

我知道这与我导入Woodstox依赖项的方式有关。下面是我的build.gradle的一部分，两次尝试导入woodstox (不知道fasterxml或codehouse是否正确)，并多次尝试排除可能导致问题的类。

dependencies {
    testCompile group: 'junit', name: 'junit', version: '4.12'
    implementation "org.gradle:gradle-tooling-api:5.4.1"
    runtimeOnly 'org.slf4j:slf4j-simple:1.7.10'
    // https://mvnrepository.com/artifact/com.fasterxml.woodstox/woodstox-core
//    compile (group: 'com.fasterxml.woodstox', name: 'woodstox-core', version: '5.2.1') {
//        exclude group: 'stax', module: 'stax-api'
//        exclude group: 'com.sun.xml', module:'internal'
//    }

    // https://mvnrepository.com/artifact/org.codehaus.woodstox/stax2-api
    compile ('org.codehaus.woodstox:stax2-api:4.2') {
        exclude group: 'com.sun.xml', module:'internal'
        exclude group: 'javax.xml.stream', module:'stax-api'
        exclude group: 'stax', module:'stax-api'
    }
}

如何修复此错误？在gradle中添加Woodstox作为依赖项的正确方法是什么？谢谢。

Answer 1

我设法通过使用woodstox osgi InputFactoryProviderImpl修复了这个强制转换错误。

import com.ctc.wstx.osgi.InputFactoryProviderImpl;
import com.ctc.wstx.osgi.OutputFactoryProviderImpl;
import org.codehaus.stax2.XMLEventReader2;
import org.codehaus.stax2.XMLInputFactory2;
import org.codehaus.stax2.XMLOutputFactory2;

InputFactoryProviderImpl iprovider = new InputFactoryProviderImpl();
OutputFactoryProviderImpl oprovider = new OutputFactoryProviderImpl();

XMLInputFactory2 ifactory = iprovider.createInputFactory();
XMLOutputFactory2 ofactory = oprovider.createOutputFactory();

XMLEventReader2 in = (XMLEventReader2) ifactory.createXMLEventReader(
        new BufferedInputStream(
                new FileInputStream(filePath)));

XMLEventWriter out = ofactory.createXMLEventWriter(result);