所以我在几个 classes中有数百个字段,我想在它们上面编写一些方法,它们会自动打印每个字段及其相应的值 目前我有这个: inner class Version(val profile: Profile) { @JvmField val MINOR_VERSION = glGe
目前我有这个:
inner class Version(val profile: Profile) { @JvmField val MINOR_VERSION = glGetInteger(GL_MINOR_VERSION) fun write(file: File? = null) { //file.printWriter().use { out -> out.pri } this::class.java.fields.forEach { println(it.isAccessible) println(it.getInt(it)) } } }
但这就是我得到的:
false Exception in thread "main" java.lang.IllegalArgumentException: Can not set final int field uno.caps.Caps$Version.MINOR_VERSION to java.lang.reflect.Field at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:167) at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:171) at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAccessorImpl.java:58) at sun.reflect.UnsafeQualifiedIntegerFieldAccessorImpl.getInt(UnsafeQualifiedIntegerFieldAccessorImpl.java:58)
任何的想法?
您也可以使用Kotlin属性和Kotlin反射类,而不是使用Java字段和Java反射代码:class Reflector { val Foo = 1; fun printFields() { this::class.memberProperties.forEach { if (it.visibility == KVisibility.PUBLIC) { println(it.name) println(it.getter.call(this)) } } } }