问题
I have an existing JNI method with two parameters. Been around for a while, in use, so I don't want to just change it lest the wrath of angry customers be unleashed.
But, I now need to make an adjustment.
So, I thought, make a second overloaded method with the extra parameter and deprecate the two-parameter version. That part went fine, jar builds and runs with no issues.
The problem is in the C++ side... I defined two methods, one being a wrapper for the other (two parameter calls the three parameter version), but, when I went to export the two methods, I receive:
Error 1 error C2733: second C linkage of overloaded function 'Java_com_xxx' not allowed
So, what do I do to keep the old method name and add a new method with new parameters? Is this doable?
回答1:
Run javah on your Java file declaring the native methods and you will see that you need two different Java_com_xxx functions. The C-level declarations must be unique.
来源：https://stackoverflow.com/questions/28637023/overload-jni-method