java - 是否可以从 Android 上的 Xalan 调用 Java 扩展函数？

Question

docx4j 使用 Xalan 将 docx 转换为 HTML，并在很大程度上依赖于 Xalan Java 扩展来完成这项工作。

但 Xalan 扩展不适用于 Android(使用 4.0.3)。 LogCat 说:

05-14 15:38:02.840: I/dalvikvm(7249): DexOpt: illegal method access (call Lorg/apache/xalan/extensions/ExtensionHandler;.getClassForName (Ljava/lang/String;)Ljava/lang/Class; from Lorg/apache/xalan/extensions/ExtensionHandlerJavaPackage;)
05-14 15:38:02.840: I/dalvikvm(7249): Could not find method org.apache.xalan.extensions.ExtensionHandler.getClassForName, referenced from method org.apache.xalan.extensions.ExtensionHandlerJavaPackage.callFunction
05-14 15:38:02.840: W/dalvikvm(7249): VFY: unable to resolve static method 21489: Lorg/apache/xalan/extensions/ExtensionHandler;.getClassForName (Ljava/lang/String;)Ljava/lang/Class;
05-14 15:38:02.840: D/dalvikvm(7249): VFY: replacing opcode 0x71 at 0x0096
05-14 15:38:02.840: I/dalvikvm(7249): Could not find method org.apache.xalan.transformer.TransformerImpl.getDebug, referenced from method org.apache.xalan.extensions.ExtensionHandlerJavaPackage.callFunction
05-14 15:38:02.840: W/dalvikvm(7249): VFY: unable to resolve virtual method 23717: Lorg/apache/xalan/transformer/TransformerImpl;.getDebug ()Z
05-14 15:38:02.840: D/dalvikvm(7249): VFY: replacing opcode 0x74 at 0x0133
05-14 15:38:02.840: I/dalvikvm(7249): DexOpt: illegal method access (call Lorg/apache/xalan/extensions/ExtensionHandler;.getClassForName (Ljava/lang/String;)Ljava/lang/Class; from Lorg/apache/xalan/extensions/ExtensionHandlerJavaPackage;)
05-14 15:38:02.840: I/dalvikvm(7249): Could not find method org.apache.xalan.extensions.ExtensionHandler.getClassForName, referenced from method org.apache.xalan.extensions.ExtensionHandlerJavaPackage.callFunction
05-14 15:38:02.840: W/dalvikvm(7249): VFY: unable to resolve static method 21489: Lorg/apache/xalan/extensions/ExtensionHandler;.getClassForName (Ljava/lang/String;)Ljava/lang/Class;
05-14 15:38:02.840: D/dalvikvm(7249): VFY: replacing opcode 0x71 at 0x0189
05-14 15:38:02.840: I/dalvikvm(7249): Could not find method org.apache.xalan.transformer.TransformerImpl.getDebug, referenced from method org.apache.xalan.extensions.ExtensionHandlerJavaPackage.callFunction
05-14 15:38:02.840: W/dalvikvm(7249): VFY: unable to resolve virtual method 23717: Lorg/apache/xalan/transformer/TransformerImpl;.getDebug ()Z
05-14 15:38:02.840: D/dalvikvm(7249): VFY: replacing opcode 0x74 at 0x028e
05-14 15:38:02.840: I/dalvikvm(7249): DexOpt: illegal method access (call Lorg/apache/xalan/extensions/ExtensionHandler;.getClassForName (Ljava/lang/String;)Ljava/lang/Class; from Lorg/apache/xalan/extensions/ExtensionHandlerJavaPackage;)
05-14 15:38:02.840: I/dalvikvm(7249): Could not find method org.apache.xalan.extensions.ExtensionHandler.getClassForName, referenced from method org.apache.xalan.extensions.ExtensionHandlerJavaPackage.isElementAvailable
05-14 15:38:02.840: W/dalvikvm(7249): VFY: unable to resolve static method 21489: Lorg/apache/xalan/extensions/ExtensionHandler;.getClassForName (Ljava/lang/String;)Ljava/lang/Class;
05-14 15:38:02.840: D/dalvikvm(7249): VFY: replacing opcode 0x71 at 0x0022
05-14 15:38:02.840: I/dalvikvm(7249): DexOpt: illegal method access (call Lorg/apache/xalan/extensions/ExtensionHandler;.getClassForName (Ljava/lang/String;)Ljava/lang/Class; from Lorg/apache/xalan/extensions/ExtensionHandlerJavaPackage;)
05-14 15:38:02.840: I/dalvikvm(7249): Could not find method org.apache.xalan.extensions.ExtensionHandler.getClassForName, referenced from method org.apache.xalan.extensions.ExtensionHandlerJavaPackage.isFunctionAvailable
05-14 15:38:02.840: W/dalvikvm(7249): VFY: unable to resolve static method 21489: Lorg/apache/xalan/extensions/ExtensionHandler;.getClassForName (Ljava/lang/String;)Ljava/lang/Class;
05-14 15:38:02.840: D/dalvikvm(7249): VFY: replacing opcode 0x71 at 0x0021
05-14 15:38:02.840: I/dalvikvm(7249): DexOpt: illegal method access (call Lorg/apache/xalan/extensions/ExtensionHandler;.getClassForName (Ljava/lang/String;)Ljava/lang/Class; from Lorg/apache/xalan/extensions/ExtensionHandlerJavaPackage;)
05-14 15:38:02.840: I/dalvikvm(7249): Could not find method org.apache.xalan.extensions.ExtensionHandler.getClassForName, referenced from method org.apache.xalan.extensions.ExtensionHandlerJavaPackage.processElement
05-14 15:38:02.840: W/dalvikvm(7249): VFY: unable to resolve static method 21489: Lorg/apache/xalan/extensions/ExtensionHandler;.getClassForName (Ljava/lang/String;)Ljava/lang/Class;
05-14 15:38:02.840: D/dalvikvm(7249): VFY: replacing opcode 0x71 at 0x004c
05-14 15:38:02.840: I/dalvikvm(7249): Could not find method org.apache.xalan.transformer.TransformerImpl.getDebug, referenced from method org.apache.xalan.extensions.ExtensionHandlerJavaPackage.processElement
05-14 15:38:02.840: W/dalvikvm(7249): VFY: unable to resolve virtual method 23717: Lorg/apache/xalan/transformer/TransformerImpl;.getDebug ()Z
05-14 15:38:02.840: D/dalvikvm(7249): VFY: replacing opcode 0x74 at 0x0091
05-14 15:38:02.860: D/AndroidRuntime(7249): Shutting down VM
05-14 15:38:02.860: W/dalvikvm(7249): threadid=1: thread exiting with uncaught exception (group=0x40a531f8)
05-14 15:38:02.860: E/AndroidRuntime(7249): FATAL EXCEPTION: main
05-14 15:38:02.860: E/AndroidRuntime(7249): java.lang.IllegalAccessError: tried to access method org.apache.xalan.extensions.ExtensionHandler.getClassForName:(Ljava/lang/String;Ljava/util/Vector;Ljava/lang/Object;Lorg/apache/xalan/extensions/ExpressionContext;)Ljava/lang/Object; from class org.apache.xalan.extensions.ExtensionHandlerJavaPackage
05-14 15:38:02.860: E/AndroidRuntime(7249):  at org.apache.xalan.extensions.ExtensionHandlerJavaPackage.callFunction(ExtensionHandlerJavaPackage.java:315)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at org.apache.xalan.extensions.ExtensionHandlerJavaPackage.callFunction(ExtensionHandlerJavaPackage.java:440)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at org.apache.xalan.extensions.ExtensionsTable.extFunction(ExtensionsTable.java:222)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at org.apache.xalan.transformer.TransformerImpl.extFunction(TransformerImpl.java:417)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at org.apache.xpath.functions.FuncExtFunction.execute(FuncExtFunction.java:208)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at org.apache.xpath.XPath.execute(XPath.java:337)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at org.apache.xalan.templates.ElemVariable.getValue(ElemVariable.java:274)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at org.apache.xalan.templates.ElemVariable.execute(ElemVariable.java:245)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:370)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:175)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2223)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(TransformerImpl.java:2096)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1228)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:614)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:1145)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:1123)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at org.docx4j.XmlUtils.transform(XmlUtils.java:841)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at org.docx4j.XmlUtils.transform(XmlUtils.java:734)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at org.docx4j.convert.out.html.HtmlExporterNG2.html(HtmlExporterNG2.java:269)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at com.example.HelloAndroid.HelloAndroid.onCreate(HelloAndroid.java:58)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at android.app.Activity.performCreate(Activity.java:4465)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at android.app.ActivityThread.access$600(ActivityThread.java:123)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at android.os.Handler.dispatchMessage(Handler.java:99)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at android.os.Looper.loop(Looper.java:137)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at android.app.ActivityThread.main(ActivityThread.java:4424)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at java.lang.reflect.Method.invokeNative(Native Method)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at java.lang.reflect.Method.invoke(Method.java:511)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
05-14 15:38:02.860: E/AndroidRuntime(7249):  at dalvik.system.NativeStart.main(Native Method)

对问题的确切原因和解决方法有什么想法吗？

Answer 1

Android 包括它自己的一些 Apache XML 库的副本。如果您想在应用中包含自己的版本，最好的办法是使用 instructions here 重新打包它。 .