从j用法到char *的jstring不会转换为可打印格式

Question

I am running a simple JNI program using the Invocation API on z/os with C. The Java program has a simple sayHello() method like this-

public static String sayHello(){
    return "Hello World!!!";
}

the code that calls this method and prints the output is as follows-

jmethodID mid=(*env)->GetStaticMethodID(env,cls2,sHStr,sigVoidString);
 jstring j = (jstring)(*env)->CallStaticObjectMethod(env,cls2, mid);
 const char *str = (*env)->GetStringUTFChars(env, j, NULL);
 printf("%s", str);
 (*env)->ReleaseStringUTFChars(env,j,str);

The output is printed as follows-

..%%?..?.%....

Turning HEX on shows the following which indicates that it is indeed HelloWorld!!!-

46666256766222
85CCF07F2C4111

I have checked few SO posts about the same problems such as this and this and each suggests using GetStringUTFChars which I am using without any success. Is there anything specific to z/os going on here?

Answer 1

在这种情况下，使用__atoe（）函数对我有用。