Question

当我尝试编译GWT时，我收到一个错误，com.allen_sauer.gwt.log.client.util.impl.DOMUtilImpl不能是抽象的。如何解决这个错误？

我正在使用GWT 2.6。

Nov 24, 2014 3:29:42 PM java.util.prefs.WindowsPreferences <init>
WARNING: Could not open/create prefs root node Software\JavaSoft\Prefs at root 0x80000002. Windows RegCreateKeyEx(...) returned error code 5.
Compiling module nl.slimbetalen.slimbetalen
   Validating units:
      Ignored 5 units with compilation errors in first pass.
Compile with -strict or with -logLevel set to TRACE or DEBUG to see all errors.
   [ERROR] Errors in 'com/allen_sauer/gwt/log/client/util/DOMUtil.java'
      [ERROR] Line 33: Rebind result 'com.allen_sauer.gwt.log.client.util.impl.DOMUtilImpl' cannot be abstract
Exception in thread "pool-1-thread-1" java.lang.NullPointerException
    at com.google.gwt.dev.util.DiskCache.transferToStream(DiskCache.java:186)
    at com.google.gwt.dev.util.DiskCacheToken.writeObject(DiskCacheToken.java:73)
    at sun.reflect.GeneratedMethodAccessor30.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)
    at java.io.ObjectOutputStream.writeSerialData(Unknown Source)
    at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)
    at java.io.ObjectOutputStream.writeObject0(Unknown Source)
    at java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)
    at java.io.ObjectOutputStream.writeSerialData(Unknown Source)
    at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)
    at java.io.ObjectOutputStream.writeObject0(Unknown Source)
    at java.io.ObjectOutputStream.writeObject(Unknown Source)
    at java.util.ArrayList.writeObject(Unknown Source)
    at sun.reflect.GeneratedMethodAccessor28.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)
    at java.io.ObjectOutputStream.writeSerialData(Unknown Source)
    at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)
    at java.io.ObjectOutputStream.writeObject0(Unknown Source)
    at java.io.ObjectOutputStream.writeObject(Unknown Source)
    at com.google.gwt.dev.javac.CachedCompilationUnit.writeObject(CachedCompilationUnit.java:223)
    at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)
    at java.io.ObjectOutputStream.writeSerialData(Unknown Source)
    at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)
    at java.io.ObjectOutputStream.writeObject0(Unknown Source)
    at java.io.ObjectOutputStream.writeObject(Unknown Source)
    at com.google.gwt.dev.javac.PersistentUnitCache$6.run(PersistentUnitCache.java:492)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Exception in thread "pool-1-thread-3" java.lang.NullPointerException
    at com.google.gwt.dev.util.DiskCache.transferToStream(DiskCache.java:185)
    at com.google.gwt.dev.util.DiskCacheToken.writeObject(DiskCacheToken.java:73)
    at sun.reflect.GeneratedMethodAccessor30.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)
    at java.io.ObjectOutputStream.writeSerialData(Unknown Source)
    at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)
    at java.io.ObjectOutputStream.writeObject0(Unknown Source)
    at java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)
    at java.io.ObjectOutputStream.defaultWriteObject(Unknown Source)
    at com.google.gwt.dev.javac.CachedCompilationUnit.writeObject(CachedCompilationUnit.java:222)
    at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)
    at java.io.ObjectOutputStream.writeSerialData(Unknown Source)
    at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)
    at java.io.ObjectOutputStream.writeObject0(Unknown Source)
    at java.io.ObjectOutputStream.writeObject(Unknown Source)
    at com.google.gwt.dev.javac.PersistentUnitCache$6.run(PersistentUnitCache.java:492)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

Answer 1

似乎问题是com.allen_sauer.gwt.log和gwt 2.6的组合。当我切换到gwt 2.5.1时问题消失了。

Answer 2

我在窗口7上遇到了与IE10相同的错误。我使用的是GWT 2.7.0。我能够通过在我的maven文件中添加gwt-log依赖来解决错误。 http://mvnrepository.com/artifact/com.allen-sauer.gwt.log/gwt-log/3.3.0

所以我建议在你的类路径中使用并添加最新的GWT日志。

Answer 3

您使用的是GWT-log吗？在这种情况下，您需要更新，因为GWT 2.6.0默认情况下没有ie6排列。（使用GWT 2.7.0将删除支持）

您可以尝试添加：

<extend-property name="user.agent" values="ie6" />

也许这样可以解决问题。

否则使用GWT记录器API：

http://translate.google.de/translate?hl=de&sl=en&u=http://www.gwtproject.org/doc/latest/DevGuideLogging.html&prev=search

GWT编译错误：重新绑定结果不能是抽象的

3 个答案: