获取以下异常在启动DevMode时，我阅读了一些具有相同问题的链接GWT 2.5.0 compiler exception 但无法解决和使用GWT 2.6.1
com.google.gwt.dev.jjs.InternalCompilerException: Error constructing Java AST
at com.google.gwt.dev.jjs.impl.GwtAstBuilder.translateException(GwtAstBuilder.java:3172)
at com.google.gwt.dev.jjs.impl.GwtAstBuilder$AstVisitor.endVisit(GwtAstBuilder.java:556)
at org.eclipse.jdt.internal.compiler.ast.CastExpression.traverse(CastExpression.java:581)
at org.eclipse.jdt.internal.compiler.ast.Assignment.traverse(Assignment.java:232)
at org.eclipse.jdt.internal.compiler.ast.Block.traverse(Block.java:127)
at org.eclipse.jdt.internal.compiler.ast.IfStatement.traverse(IfStatement.java:275)
at org.eclipse.jdt.internal.compiler.ast.MethodDeclaration.traverse(MethodDeclaration.java:307)
at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:1382)
at org.eclipse.jdt.internal.compiler.ast.QualifiedAllocationExpression.traverse(QualifiedAllocationExpression.java:552)
at org.eclipse.jdt.internal.compiler.ast.MessageSend.traverse(MessageSend.java:663)
at org.eclipse.jdt.internal.compiler.ast.MethodDeclaration.traverse(MethodDeclaration.java:307)
at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:1327)
at com.google.gwt.dev.jjs.impl.GwtAstBuilder.process(GwtAstBuilder.java:3131)
at com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater$UnitProcessorImpl.process(CompilationStateBuilder.java:127)
at com.google.gwt.dev.javac.JdtCompiler$CompilerImpl.process(JdtCompiler.java:346)
at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:470)
at com.google.gwt.dev.javac.JdtCompiler.doCompile(JdtCompiler.java:880)
at com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater.compile(CompilationStateBuilder.java:284)
at com.google.gwt.dev.javac.CompilationStateBuilder.doBuildFrom(CompilationStateBuilder.java:511)
at com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:434)
at com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:420)
at com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:495)
at com.google.gwt.dev.DevModeBase$UiBrowserWidgetHostImpl.createModuleSpaceHost(DevModeBase.java:104)
at com.google.gwt.dev.shell.OophmSessionHandler.loadModule(OophmSessionHandler.java:197)
at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:526)
at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:364)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassCastException: org.eclipse.jdt.internal.compiler.lookup.BinaryTypeBinding cannot be cast to org.eclipse.jdt.internal.compiler.lookup.BaseTypeBinding
at com.google.gwt.dev.jjs.impl.GwtAstBuilder$AstVisitor.unbox(GwtAstBuilder.java:2809)
at com.google.gwt.dev.jjs.impl.GwtAstBuilder$AstVisitor.maybeBoxOrUnbox(GwtAstBuilder.java:2414)
at com.google.gwt.dev.jjs.impl.GwtAstBuilder$AstVisitor.simplify(GwtAstBuilder.java:2803)
at com.google.gwt.dev.jjs.impl.GwtAstBuilder$AstVisitor.pop(GwtAstBuilder.java:1959)
at com.google.gwt.dev.jjs.impl.GwtAstBuilder$AstVisitor.endVisit(GwtAstBuilder.java:553)
at org.eclipse.jdt.internal.compiler.ast.CastExpression.traverse(CastExpression.java:581)
at org.eclipse.jdt.internal.compiler.ast.Assignment.traverse(Assignment.java:232)
at org.eclipse.jdt.internal.compiler.ast.Block.traverse(Block.java:127)
at org.eclipse.jdt.internal.compiler.ast.IfStatement.traverse(IfStatement.java:275)
at org.eclipse.jdt.internal.compiler.ast.MethodDeclaration.traverse(MethodDeclaration.java:307)
at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:1382)
at org.eclipse.jdt.internal.compiler.ast.QualifiedAllocationExpression.traverse(QualifiedAllocationExpression.java:552)
at org.eclipse.jdt.internal.compiler.ast.MessageSend.traverse(MessageSend.java:663)
at org.eclipse.jdt.internal.compiler.ast.MethodDeclaration.traverse(MethodDeclaration.java:307)
at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:1327)
at com.google.gwt.dev.jjs.impl.GwtAstBuilder.process(GwtAstBuilder.java:3131)
at com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater$UnitProcessorImpl.process(CompilationStateBuilder.java:127)
at com.google.gwt.dev.javac.JdtCompiler$CompilerImpl.process(JdtCompiler.java:346)
at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:470)
at com.google.gwt.dev.javac.JdtCompiler.doCompile(JdtCompiler.java:880)
at com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater.compile(CompilationStateBuilder.java:284)
at com.google.gwt.dev.javac.CompilationStateBuilder.doBuildFrom(CompilationStateBuilder.java:511)
at com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:434)
at com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:420)
at com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:495)
at com.google.gwt.dev.DevModeBase$UiBrowserWidgetHostImpl.createModuleSpaceHost(DevModeBase.java:104)
at com.google.gwt.dev.shell.OophmSessionHandler.loadModule(OophmSessionHandler.java:197)
at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:526)
at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:364)
at java.lang.Thread.run(Thread.java:745)