NativeMethodAccessorImpl invoke method声明它可以抛出 IllegalArgumentException
或 InitationTargetException
public Object invoke(Object obj, Object[] args) throws IllegalArgumentException, InvocationTargetException { // We can't inflate methods belonging to vm-anonymous classes because // that kind of class can't be referred to by name, hence can't be // found from the generated bytecode. if (++numInvocations > ReflectionFactory.inflationThreshold() && !ReflectUtil.isVMAnonymousClass(method.getDeclaringClass())) { MethodAccessorImpl acc = (MethodAccessorImpl) new MethodAccessorGenerator(). generateMethod(method.getDeclaringClass(), method.getName(), method.getParameterTypes(), method.getReturnType(), method.getExceptionTypes(), method.getModifiers()); parent.setDelegate(acc); } return invoke0(method, obj, args); } private static native Object invoke0(Method m, Object obj, Object[] args);
native 方法 throws IllegalArgumentException在某些情况下,例如
Exception in thread "main" java.lang.IllegalArgumentException: argument type mismatch at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
但我没有看到任何抛出 InvocableTargetException
检查异常
native 方法 invoke0
(不声明异常)是否可以抛出 InvocableTargetException
?
或者是由于方法签名向后/ future 兼容性而保留 InitationTargetException
吗?
最佳答案
invoke0可以抛出InitationTargetException
:
Exception in Application start method
java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
例如,当找不到 FXML 资源文件时。
关于java - 为什么 NativeMethodAccessorImpl 声明 InitationTargetException,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/58257618/