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获取子Rectangle2D.Double成员之后通过JNI
import java.awt.geom.Rectangle2D;
class SomeJavaClass
{
public SomeJavaClass()
{
m_rect = new Rectangle2D.Double();
}
Rectangle2D.Double m_rect;
}
类和下面的C++假设代码
jclass someJavaCls = env->FindClass("my/package/SomeJavaClass");
jfieldID rectID = env->GetFieldID(someJavaCls, "m_rect", "Ljava/awt/geom/Rectangle2D;");
的问题是,我不知道如何访问fieldID为m_rect
。通过以上GetFieldID
呼叫我得到
Exception in thread "Thread-2" java.lang.NoSuchFieldError: m_rect
而且如果我改变的GetFieldID
的签名"Ljava/awt/geom/Rectangle2D/Double;"
我得到相同的异常。这是如何完成的?