C++ 调用java中的方法（class文件）

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于 2022-04-06 15:53:00 发布

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分类专栏： C/C++ Java 文章标签： c++

本文链接：https://blog.youkuaiyun.com/uVarAndMethod/article/details/123992077

#include "jni.h"
#include <windows.h>
#include <Shlwapi.h>
#include <string>
#include <string.h>
#include <wchar.h>
#include <iostream>
using namespace std;

#pragma comment(lib,"Shlwapi.lib") 

HINSTANCE jvmdll = NULL;
JavaVM* jvm = NULL;
void* jenv = NULL;


typedef jint(WINAPI* _CreateJavaVM)(JavaVM**, void**, void*);

wchar_t* Utf82Unicode(const char* utf, size_t* unicode_number)
{
	if (!utf || !strlen(utf))
	{
		*unicode_number = 0;
		return NULL;
	}
	int dwUnicodeLen = MultiByteToWideChar(CP_UTF8, 0, utf, -1, NULL, 0);
	size_t num = dwUnicodeLen * sizeof(wchar_t);
	wchar_t* pwText = (wchar_t*)malloc(num);
	memset(pwText, 0, num);
	MultiByteToWideChar(CP_UTF8, 0, utf, -1, pwText, dwUnicodeLen);
	*unicode_number = dwUnicodeLen - 1;
	return pwText;
}

int main(int argc, char* argv[])
{
	int res;
	JavaVMInitArgs vm_args;
	JavaVMOption options[3];
	JavaVM* jvm = NULL