1). 打印jstring
#include <android/log.h>
#define TAG "AES_CPP"
#define LOGD(FORMAT, ...) __android_log_print(ANDROID_LOG_DEBUG,TAG,FORMAT,##__VA_ARGS__);
jstring string = env->NewStringUTF("mazaiting");
const char *cString = env->GetStringUTFChars(string, NULL);
LOGD("%s", cString);
![[Android]JNI的基础知识](https://ucc.alicdn.com/pic/developer-ecology/vpeb5jwq6fat6_983399a8b858448cabc29d0f46da6cb9.png?x-oss-process=image/resize,h_160,m_lfit)