求助jni的GetStringUTFChars和ReleaseStringUTFChars

[丘小]

JNIEXPORT void JNICALL
Java_Sendtobank_send(JNIEnv *env, jobject obj,jstring whattosend)
{

const jbyte *str =(const jbyte *)env->GetStringUTFChars(whattosend,JNI_FALSE);
printf("Hello,%s\n",str);
env->ReleaseStringUTFChars(whattosend,str);
return;
}

出错:
/home/oracle/Sendtobank.c: In function `Java_Sendtobank_send':
/home/oracle/Sendtobank.c:9: request for member `GetStringUTFChars' in something not a structure or union
/home/oracle/Sendtobank.c:11:

怎么解决啊?

代码原来是用在C++的,我现在用在c,会不会是这个原因呢? 如果是的话应该怎么改?

[lapwing2002]

还可以用
wchar_t* cstr=(wchar_t*)(*env).GetStringChars(jstr,NULL);
int size=(*env).GetStringLength(jstr);

[丘小]

楼上的兄弟，这个问题我是这么解决的：
http://expert.csdn.net/Expert/topic/2591/2591935.xml?temp=.474682
另请帮我看看：
http://expert.csdn.net/Expert/topic/2598/2598941.xml?temp=.6342127

[丘小]

问题解决

[trilsen0]

结贴