gwt - GWT编译错误

Question

我正在使用任何目标在 GWT 中编译我的项目。我在 Linux 和 Solaris 上收到以下错误。我可以编译 GWT 附带的示例，但出现此错误。

我正在使用 GWT 2.0.3 和 JDK 1.6.17

 [java] Compiling module com.calix.ex1.webgui.ex1embeddedclient.Ex1EmbeddedGui
 [java] [ERROR] Unexpected
 [java] java.lang.NullPointerException
 [java]     at com.google.gwt.dev.javac.JdtCompiler$FindTypesInCud.visit(JdtCompiler.java:179)
 [java]     at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:1253)
 [java]     at org.eclipse.jdt.internal.compiler.ast.QualifiedAllocationExpression.traverse(QualifiedAllocationExpression.java:478)
 [java]     at org.eclipse.jdt.internal.compiler.ast.ReturnStatement.traverse(ReturnStatement.java:262)
 [java]     at org.eclipse.jdt.internal.compiler.ast.MethodDeclaration.traverse(MethodDeclaration.java:239)
 [java]     at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:1350)
 [java]     at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:1223)
 [java]     at org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration.traverse(CompilationUnitDeclaration.java:687)
 [java]     at com.google.gwt.dev.javac.JdtCompiler$CompilerImpl.process(JdtCompiler.java:158)
 [java]     at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:444)
 [java]     at com.google.gwt.dev.javac.JdtCompiler.doCompile(JdtCompiler.java:467)
 [java]     at com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater.compile(CompilationStateBuilder.java:142)
 [java]     at com.google.gwt.dev.javac.CompilationStateBuilder.doBuildFrom(CompilationStateBuilder.java:281)
 [java]     at com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:182)
 [java]     at com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:280)
 [java]     at com.google.gwt.dev.Precompile.precompile(Precompile.java:502)
 [java]     at com.google.gwt.dev.Precompile.precompile(Precompile.java:414)
 [java]     at com.google.gwt.dev.Compiler.run(Compiler.java:201)
 [java]     at com.google.gwt.dev.Compiler$1.run(Compiler.java:152)
 [java]     at com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:87)
 [java]     at com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(CompileTaskRunner.java:81)
 [java]     at com.google.gwt.dev.Compiler.main(Compiler.java:159)

Answer 1

也许这里有一个答案: GWT Issue 4552

If you neglect to add an import for an anonymous class like so:

FocusPanel dropdown = new FocusPanel();
dropdown.addClickHandler(new BloggiDiBlook() {});

where class BloggiDiBlook is neither in the enclosing class's package, nor imported in the enclosing class's .java file. There ought to be an appropriate "Class not found" or similar compiler error. Instead, the JDT Compiler throws the following NullPointerException