#ifndef _WIN32 JNIEnv *j = JniHelper::getEnv(); if (j == nullptr || j == NULL) {test += "JNIEnv == NULL";} else { jstring js = j->NewStringUTF(std::string(" new string utf ").c_str()); std::string j2s = JniHelper::jstring2string(js); test += j2s; } #endif
原文：https://www.cnblogs.com/YZFHKMS-X/p/12037750.html