在JNI中,可以使用GetStringUTFChars函数将jstring转换为UTF-8编码的C字符串(const char*类型),然后可以将其复制到char数组中。 3. 编写代码实现jstring到char的转换 c #include <jni.h> #include <stdio.h> #include <stdlib.h> #include <string.h> JNIEXPORT void JNICALL Java...
{ char* rtn = NULL; jclass clsstring = env->FindClass("java/lang/String"); jstring strencode = env->NewStringUTF("utf-8"); jmethodID mid = env->GetMethodID(clsstring, "getBytes", "(Ljava/lang/String;)[B"); jbyteArray barr= (jbyteArray)env->CallObjectMethod(jstr, mid, strencode)...
jClassString = pEnv->FindClass("java/lang/String"); } jmethodID jmethod = pEnv->GetMethodID(jClassString, "getBytes", "(Ljava/lang/String;)[B"); jbyteArray jarr = (jbyteArray)pEnv->CallObjectMethod(jresult, jmethod, pEnv->NewStringUTF(CHARSET_UTF8)); jsize jlen = pEnv->GetArray...
env->SetByteArrayRegion(bytes, 0, strlen(pat), (jbyte*)pat); jstring encoding = env->NewStringUTF("utf-8"); return (jstring)env->NewObject(strClass, ctorID, bytes, encoding); } //将jstring类型转换成windows类型 char* jstringToWindows( JNIEnv *env, jstring jstr ) { int length = (...
char* rtn = NULL; jclass clsstring = (*env)->FindClass(env,"java/lang/String"); jstring strencode = (*env)->NewStringUTF(env,"utf-8"); jmethodID mid = (*env)->GetMethodID(env,clsstring, "getBytes", "(Ljava/lang/String;)[B"); ...
在java中由于是unicode编码,无论是英文字母还是汉字每个字符都是占用2个字节。但是在jni中的字符时utf-8编码,每个字符不是等长的。所以在java和jni调用的时候要注意这个问题。 下面是我在网上找到的一些把jstring和char*转换的一些sample代码: jstring to char* ...
char* rtn = NULL;jclass clsstring = env->FindClass("java/lang/String");jstring strencode = env->NewStringUTF("utf-8");jmethodID mid = env->GetMethodID(clsstring, "getBytes", "(Ljava/lang/String;)[B");jbyteArray barr= (jbyteArray)env->CallObjectMethod(jstr, mid, str...
**error:***JNI DETECTED ERROR IN APPLICATION: input is not valid Modified UTF-8: illegal continuation byte 0x38**; 在JNI里直接定义 char *key_string = "1234567890123";就没问题全部代码如下,网上找的,用来加密的;jstring Java_com_itapp_mylibrary_MyLibrary_setAES(JNIEnv *env, jobject thiz, ...
String^ value = gcnew String(str); free(str); return value; } // jstring To char* char* jstringTostring(JNIEnv* env, jstring jstr) { char* rtn = NULL; jclass clsstring = env->FindClass("java/lang/String"); jstring strencode = env->NewStringUTF("utf-8"); ...
因为这是一个GBK编码的char*字符串,不可能直接调用函数直接返回: char* p; jstring encoding = (env)->NewStringUTF(p); 出现如下的错误:the key point is "Modified UTF-8"is not like "Regular UTF-8", a legal Rgular UTF8 code sequence may beconsidered illegal against Modified UTF8. ...