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修复jni打印乱码的问题。 #6

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zeekling merged 1 commits from fix/jni_luanma into main 2023-12-31 09:07:16 +00:00
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1 changed files with 4 additions and 2 deletions
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6
src/main/native/jniTestNative.c
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@ -11,15 +11,17 @@ extern "C" {
JNIEXPORT void JNICALL Java_com_zeekling_cn_jni_JniTest_say(JNIEnv* env, jclass cls, jstring j_str) { JNIEXPORT void JNICALL Java_com_zeekling_cn_jni_JniTest_say(JNIEnv* env, jclass cls, jstring j_str) {
const char *c_str = NULL; const char *c_str = NULL;
char buff[128] = { 0 }; char buff[128] = { 0 };
c_str = (*env)->GetStringUTFChars(env, j_str, NULL); jboolean isCopy;
c_str = (*env)->GetStringUTFChars(env, j_str, &isCopy);
if (c_str == NULL) if (c_str == NULL)
{ {
printf("out of memory.\n"); printf("out of memory.\n");
return NULL; return NULL;
} }
(*env)->ReleaseStringUTFChars(env, j_str, c_str);
printf("Hello,I'm C++,the Java Str is:%s\n", c_str); printf("Hello,I'm C++,the Java Str is:%s\n", c_str);
sprintf(buff, "hello %s", c_str); sprintf(buff, "hello %s", c_str);
(*env)->ReleaseStringUTFChars(env, j_str, c_str);
return (*env)->NewStringUTF(env, buff); return (*env)->NewStringUTF(env, buff);
} }
#ifdef __cplusplus #ifdef __cplusplus