使用jni将返回带有模板的对象的java代码转换为c++

public class TemplateObject<T> {
    private T data;

    public TemplateObject(T data) {
        this.data = data;
    }

    public T getData() {
        return data;
    }
}

public class Main {
    public static native TemplateObject<String> convertToCPlusPlus();
}

#include <jni.h>

extern "C" {
JNIEXPORT jobject JNICALL Java_Main_convertToCPlusPlus(JNIEnv *env, jclass) {
    // 创建一个Java对象
    jclass templateObjectClass = env->FindClass("com/example/TemplateObject");
    jmethodID constructor = env->GetMethodID(templateObjectClass, "<init>", "(Ljava/lang/Object;)V");
    jobject javaObject = env->NewObject(templateObjectClass, constructor, env->NewStringUTF("Hello from C++"));

    // 将Java对象转换为C++对象
    jmethodID getDataMethod = env->GetMethodID(templateObjectClass, "getData", "()Ljava/lang/Object;");
    jstring data = (jstring) env->CallObjectMethod(javaObject, getDataMethod);
    const char *cData = env->GetStringUTFChars(data, nullptr);

    // 在C++中使用转换后的对象
    // ...

    // 释放资源
    env->ReleaseStringUTFChars(data, cData);

    return javaObject;
}
}

public class Main {
    static {
        System.loadLibrary("native-lib");
    }

    public static native TemplateObject<String> convertToCPlusPlus();

    public static void main(String[] args) {
        TemplateObject<String> cPlusPlusObject = convertToCPlusPlus();
        String data = cPlusPlusObject.getData();
        System.out.println(data);
    }
}