问题描述
跳棋框架 引用了 java.lang.annotation.ElementType.JDK8 中新增的TYPE_USE
.当我在JDK7下使用时,出现如下警告:
The Checkers Framework references java.lang.annotation.ElementType.TYPE_USE
which was added in JDK8. When I use it under JDK7, I get the following warning:
未知枚举常量 java.lang.annotation.ElementType.TYPE_USE
这是一个合理的警告,但是对于我认为无害的情况,我该如何抑制它?
This is a reasonable warning, but how do I suppress it for cases I believe are harmless?
推荐答案
事实证明,不存在无害的未知枚举常量这样的东西.一旦我通过编译器警告,我在运行时遇到了异常:
It turns out there is no such thing as a harmless unknown enum constant. Once I got past the compiler warnings, I ran into exceptions at runtime:
java.lang.ArrayStoreException: sun.reflect.annotation.EnumConstantNotPresentExceptionProxy
at sun.reflect.annotation.AnnotationParser.parseEnumArray(AnnotationParser.java:693) ~[na:1.7.0_40]
at sun.reflect.annotation.AnnotationParser.parseArray(AnnotationParser.java:482) ~[na:1.7.0_40]
at sun.reflect.annotation.AnnotationParser.parseMemberValue(AnnotationParser.java:306) ~[na:1.7.0_40]
at sun.reflect.annotation.AnnotationParser.parseAnnotation(AnnotationParser.java:241) ~[na:1.7.0_40]
at sun.reflect.annotation.AnnotationParser.parseAnnotations2(AnnotationParser.java:88) ~[na:1.7.0_40]
at sun.reflect.annotation.AnnotationParser.parseAnnotations(AnnotationParser.java:70) ~[na:1.7.0_40]
at java.lang.Class.initAnnotationsIfNecessary(Class.java:3168) ~[na:1.7.0_40]
at java.lang.Class.getAnnotation(Class.java:3127) ~[na:1.7.0_40]
at sun.reflect.annotation.AnnotationType.<init>(AnnotationType.java:131) ~[na:1.7.0_40]
at sun.reflect.annotation.AnnotationType.getInstance(AnnotationType.java:84) ~[na:1.7.0_40]
at sun.reflect.annotation.AnnotationParser.parseAnnotation(AnnotationParser.java:221) ~[na:1.7.0_40]
at sun.reflect.annotation.AnnotationParser.parseAnnotations2(AnnotationParser.java:88) ~[na:1.7.0_40]
at sun.reflect.annotation.AnnotationParser.parseAnnotations(AnnotationParser.java:70) ~[na:1.7.0_40]
at java.lang.reflect.Method.declaredAnnotations(Method.java:714) ~[na:1.7.0_40]
at java.lang.reflect.Method.getAnnotation(Method.java:700) ~[na:1.7.0_40]
at com.google.inject.spi.InjectionPoint.getAtInject(InjectionPoint.java:466) ~[guice-3.0-no_aop.jar:na]
at com.google.inject.spi.InjectionPoint.getInjectionPoints(InjectionPoint.java:664) ~[guice-3.0-no_aop.jar:na]
at com.google.inject.spi.InjectionPoint.forInstanceMethodsAndFields(InjectionPoint.java:356) ~[guice-3.0-no_aop.jar:na]
at com.google.inject.internal.MembersInjectorStore.createWithListeners(MembersInjectorStore.java:90) ~[guice-3.0-no_aop.jar:na]
at com.google.inject.internal.MembersInjectorStore.access$000(MembersInjectorStore.java:34) ~[guice-3.0-no_aop.jar:na]
at com.google.inject.internal.MembersInjectorStore$1.create(MembersInjectorStore.java:42) ~[guice-3.0-no_aop.jar:na]
at com.google.inject.internal.MembersInjectorStore$1.create(MembersInjectorStore.java:39) ~[guice-3.0-no_aop.jar:na]
at com.google.inject.internal.FailableCache$1.apply(FailableCache.java:39) ~[guice-3.0-no_aop.jar:na]
at com.google.inject.internal.util.$MapMaker$StrategyImpl.compute(MapMaker.java:549) ~[guice-3.0-no_aop.jar:na]
... 102 common frames omitted
意思是,任何使用 java.lang.reflect.Method.getAnnotation()
的代码都会在运行时失败.
Meaning, any code that uses java.lang.reflect.Method.getAnnotation()
will fail at runtime.
就我而言,此问题是由 https://code.google.com/p/checker-framework/issues/detail?id=255
In my case, this issue was caused by https://code.google.com/p/checker-framework/issues/detail?id=255
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