问JNIEnv->FindClass返回null OpenJDK 7，正确返回Oracle JDK 8

EN

JavaVM *jvm;
JNIEnv *env;
LoadLibrary(TEXT("jvm.dll"));
JavaVMInitArgs vm_args;
vm_args.version=JNI_VERSION_1_6;
if (uri != NULL)
{
    vm_args.nOptions=l_paramlines;
}
else 
{
    vm_args.nOptions=l_paramlines-1;
}
vm_args.options=new JavaVMOption[vm_args.nOptions];
int index=0;
char* buffer;
if (uri != NULL)
{
    int bufferLen=512;
    buffer = new char[bufferLen];
    strcpy_s(buffer, bufferLen, "-Dcom.chives.configuri=");
    strcat_s(buffer, bufferLen, uri);
    vm_args.options[index++].optionString = buffer;
}
for (int i=0; i<l_paramlines-1; i++) vm_args.options[index++].optionString=paramlines[i];
vm_args.ignoreUnrecognized=false;
jint result=JNI_CreateJavaVM(&jvm, reinterpret_cast<void **>(&env), &vm_args);
if (result!=JNI_OK) return 0;
jclass cls=env->FindClass(paramlines[l_paramlines-1]);
if (cls!=NULL) {
    jmethodID mid=env->GetStaticMethodID(cls, "main", "([Ljava/lang/String;)V");
    jobjectArray args=env->NewObjectArray(1, env->FindClass("java/lang/String"), NULL);
    env->SetObjectArrayElement(args,0,env->NewStringUTF(game));
    env->CallStaticVoidMethod(cls, mid, args);
}

jvm->DestroyJavaVM();
return 0;

Manifest-Version: 1.0
Rsrc-Class-Path: ./
Class-Path: .
Rsrc-Main-Class: Clazz
Main-Class: org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader

Manifest-Version: 1.0
Class-Path: .
Main-Class: Clazz

Manifest-Version: 1.0
Archiver-Version: Plexus Archiver
Created-By: Apache Maven
Build-Jdk: 1.8.0_20
Main-Class: Clazz
Built-By: Chives