I'm getting these weird errors when I try to compile my Libgdx game to HTML5 in Eclipse.
当我尝试在Eclipse中将我的Libgdx游戏编译为HTML5时,我遇到了这些奇怪的错误。
Tracing compile failure path for type 'java.util.function.DoubleUnaryOperator'
[ERROR] Errors in 'com/google/gwt/emul/java/util/function/DoubleUnaryOperator.java'
[ERROR] Line 33: Default methods are allowed only at source level 1.8 or above
[ERROR] Line 35: Cannot refer to the non-final local variable after defined in an enclosing scope
[ERROR] Line 40: Cannot refer to the non-final local variable before defined in an enclosing scope
[ERROR] Line 40: Lambda expressions are allowed only at source level 1.8 or above
[ERROR] Line 35: Lambda expressions are allowed only at source level 1.8 or above
[ERROR] Line 38: Default methods are allowed only at source level 1.8 or above
[ERROR] Line 27: Illegal modifier for the interface method identity; only public & abstract are permitted
[ERROR] Line 27: Static methods are allowed in interfaces only at source level 1.8 or above
[ERROR] Line 28: Lambda expressions are allowed only at source level 1.8 or above
Tracing compile failure path for type 'java.util.stream.Collectors'
[ERROR] Errors in 'com/google/gwt/emul/java/util/stream/Collectors.java'
[ERROR] Line 291: This static method of interface Collector can only be accessed as Collector.of
[ERROR] Line 348: Lambda expressions are allowed only at source level 1.8 or above
[ERROR] Line 96: Lambda expressions are allowed only at source level 1.8 or above
[ERROR] Line 223: The method of(Supplier<R>, BiConsumer<R,T>, BinaryOperator<R>, Collector.Characteristics...) in the type Collector is not applicable for the arguments (() -> {}, (<no type> u, <no type> t) -> {}, (Object[] u1, Object[] u2) -> {}, (Object[] a) -> {})
[ERROR] Line 311: Constructor references are allowed only at source level 1.8 or above
[ERROR] Line 192: Method references are allowed only at source level 1.8 or above
[ERROR] Line 205: Lambda expressions are allowed only at source level 1.8 or above
[ERROR] Line 143: Constructor references are allowed only at source level 1.8 or above
[ERROR] Line 168: Lambda expressions are allowed only at source level 1.8 or above
[ERROR] Line 339: Lambda expressions are allowed only at source level 1.8 or above...
In my build.gradle, I've checked that the gwtVersion is using 2.7.0 and my sourceCompatibility is at 1.8. I've been at this thing for days and I can't seem to figure it out.
在我的build.gradle中,我检查过gwtVersion是使用2.7.0而我的sourceCompatibility是1.8。我已经好几天了,我似乎无法弄明白。
Help!!!
UPDATED
Thank you Colin for the feedback. Here's the error I'm getting now:
感谢Colin的反馈。这是我现在得到的错误:
[ERROR] An internal compiler exception occurred com.google.gwt.dev.jjs.InternalCompilerException: Error constructing Java AST at com.google.gwt.dev.jjs.impl.GwtAstBuilder.translateException(GwtAstBuilder.java:3099) at com.google.gwt.dev.jjs.impl.GwtAstBuilder$AstVisitor.endVisit(GwtAstBuilder.java:352) at org.eclipse.jdt.internal.compiler.ast.AllocationExpression.traverse(AllocationExpression.java:670) at org.eclipse.jdt.internal.compiler.ast.ReturnStatement.traverse(ReturnStatement.java:373) at org.eclipse.jdt.internal.compiler.ast.MethodDeclaration.traverse(MethodDeclaration.java:347) at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:1379) at com.google.gwt.dev.jjs.impl.GwtAstBuilder.process(GwtAstBuilder.java:3058) at com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater$UnitProcessorImpl.process(CompilationStateBuilder.java:141) at com.google.gwt.dev.javac.JdtCompiler$CompilerImpl.process(JdtCompiler.java:384) at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:470) at com.google.gwt.dev.javac.JdtCompiler.doCompile(JdtCompiler.java:985) at com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater.compile(CompilationStateBuilder.java:339) at com.google.gwt.dev.javac.CompilationStateBuilder.doBuildFrom(CompilationStateBuilder.java:580) at com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:513) at com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:499) at com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:668) at com.google.gwt.dev.Precompile.precompile(Precompile.java:255) at com.google.gwt.dev.Precompile.precompile(Precompile.java:229) at com.google.gwt.dev.Precompile.precompile(Precompile.java:145) at com.google.gwt.dev.Compiler.run(Compiler.java:206) at com.google.gwt.dev.Compiler.run(Compiler.java:158) at com.google.gwt.dev.Compiler$1.run(Compiler.java:120) at com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:55) at com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(CompileTaskRunner.java:50) at com.google.gwt.dev.Compiler.main(Compiler.java:127) Caused by: java.lang.NullPointerException at com.google.gwt.dev.jjs.impl.ReferenceMapper.get(ReferenceMapper.java:99) at com.google.gwt.dev.jjs.impl.GwtAstBuilder$AstVisitor.pushNewExpression(GwtAstBuilder.java:2642) at com.google.gwt.dev.jjs.impl.GwtAstBuilder$AstVisitor.endVisit(GwtAstBuilder.java:350) ... 23 more [ERROR] at TimeZone.java(126): new String(data) org.eclipse.jdt.internal.compiler.ast.AllocationExpression
[错误] com.google.gwt.dev.jjs.InternalCompilerException发生内部编译器异常:在com的com.google.gwt.dev.jjs.impl.GwtAstBuilder.translateException(GwtAstBuilder.java:3099)构建Java AST时出错。 google.gwt.dev.jjs.impl.GwtAstBuilder $ AstVisitor.endVisit(GwtAstBuilder.java:352)位于org.eclipse的org.eclipse.jdt.internal.compiler.ast.AllocationExpression.traverse(AllocationExpression.java:670)。 jdt.internal.compiler.ast.ReturnStatement.traverse(ReturnStatement.java:373)位于org.eclipse.jdt.internal的org.eclipse.jdt.internal.compiler.ast.MethodDeclaration.traverse(MethodDeclaration.java:347)。 compile.ast.TypeDeclaration.traverse(TypeDeclaration.java:1379)at com.google.gwt.dev.jjs.impl.GwtAstBuilder.process(GwtAstBuilder.java:3058)at com.google.gwt.dev.javac.CompilationStateBuilder $ compileMoreLater $ UnitProcessorImpl.process(CompilationStateBuilder.java:141)位于org.eclipse.jdt.inte的com.google.gwt.dev.javac.JdtCompiler $ CompilerImpl.process(JdtCompiler.java:384) rnal.compiler.Compiler.compile(Compiler.java:470)位于com.google.gwt.dev.javac.JdtCompiler.doCompile(JdtCompiler.java:985)com.google.gwt.dev.javac.CompilationStateBuilder $ CompileMoreLater。编译(CompilationStateBuilder.java:339)com.google.gwt.dev.javac.CompilationStateBuilder.doBuildFrom(CompilationStateBuilder.java:580)com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:513)在com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:499)com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:668)com.google.gwt.dev 。com.Reetcompile.precompile(Precompile.java:255)位于com.google.gwt.dev.Precompile.precompile(Precompile.java:229)的com.google.gwt.dev.Precompile.precompile(Precompile.java:145)at com.google.gwt.dev.Compiler.run(Compiler.java:206)com.google.gwt.dev.Compiler.run(Compiler.java:158)com.google.gwt.dev.Compiler $ 1.run (Compiler.java:120)com.google.gwt.dev.CompileTaskRunner.do在com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(CompileTaskRunner.java:50)上运行(CompileTaskRunner.java:55)com.google.gwt.dev.Compiler.main(Compiler.java:127)引起:java Com.google.gwt.dev.jjs.impl.ReferenceMapper.get(ReferenceMapper.java:99)中的.lang.NullPointerException,位于com.google.gwt.dev.jjs.impl.GwtAstBuilder $ AstVisitor.pushNewExpression(GwtAstBuilder.java: 2642)在com.google.gwt.dev.jjs.impl.GwtAstBuilder $ AstVisitor.endVisit(GwtAstBuilder.java:350)... 23更多[错误]在TimeZone.java(126):new String(data)org。 eclipse.jdt.internal.compiler.ast.AllocationExpression
Maybe I have to update it to GWT 2.8.0?
也许我必须将其更新为GWT 2.8.0?
P.S: In my html\war\WEB-INF\lib directory, i have the following jars:
P.S:在我的html \ war \ WEB-INF \ lib目录中,我有以下jar:
Is that setup correct?
这个设置是否正确?
UPDATED:
Now updated to GWT 2.8.1. Now I get the following error:
现在更新为GWT 2.8.1。现在我收到以下错误:
Exception in thread "main" java.lang.NoSuchMethodError: com.google.gwt.util.regexfilter.RegexFilter: method <init>()V not found
at com.google.gwt.util.regexfilter.WhitelistRegexFilter.<init>(WhitelistRegexFilter.java:21)
at com.google.gwt.dev.jjs.JJSOptionsImpl.<init>(JJSOptionsImpl.java:54)
at com.google.gwt.dev.PrecompileTaskOptionsImpl.<init>(PrecompileTaskOptionsImpl.java:39)
at com.google.gwt.dev.CompilerOptionsImpl.<init>(CompilerOptionsImpl.java:30)
at com.google.gwt.dev.Compiler.main(Compiler.java:108)
Should I clean up the (or some of the) jars that's in my html\war\WEB-INF\lib directory and use other jars?
我应该清理我的html \ war \ WEB-INF \ lib目录中的(或某些)罐子并使用其他罐子吗?
1 个解决方案
#1
3
If you are using GWT 2.7, you cannot use Java8. If you want to use Java 8, upgrade to GWT 2.8 (or better, 2.8.1).
如果您使用的是GWT 2.7,则无法使用Java8。如果要使用Java 8,请升级到GWT 2.8(或更好,2.8.1)。
That said, if you are finding those classes at all, it suggests you have part of GWT 2.8 already on your classpath, and mixing bits and pieces from each version of GWT won't end well. Best to upgrade everything to latest, 2.8.1.
也就是说,如果您正在查找这些类,那么它表明您已经在类路径中拥有了GWT 2.8的一部分,并且每个版本的GWT的混合碎片将不会很好地结束。最好将所有内容升级到最新版本,2.8.1。
#1
3
If you are using GWT 2.7, you cannot use Java8. If you want to use Java 8, upgrade to GWT 2.8 (or better, 2.8.1).
如果您使用的是GWT 2.7,则无法使用Java8。如果要使用Java 8,请升级到GWT 2.8(或更好,2.8.1)。
That said, if you are finding those classes at all, it suggests you have part of GWT 2.8 already on your classpath, and mixing bits and pieces from each version of GWT won't end well. Best to upgrade everything to latest, 2.8.1.
也就是说,如果您正在查找这些类,那么它表明您已经在类路径中拥有了GWT 2.8的一部分,并且每个版本的GWT的混合碎片将不会很好地结束。最好将所有内容升级到最新版本,2.8.1。