我有一个c++应用程序,它使用jni访问java函数。只要我在release中构建我的应用程序,一切都是好的。但是当我在debug中构建应用程序时,应用程序一调用jni代码就会崩溃。
我在ubuntu14.04x64下使用qtcreator,gcc4.8.2和java1.7.0\u75
示例方法:
void JNICommunicator::queryJNI_deleteIndividual(std::string path, std::string individualName){
if(jvmStatus != JNI_ERR){
jclass cls = env->FindClass("de/myclasspacked/MyClass"); //when getting to this point, the application crashes
if(env->ExceptionOccurred()){
env->ExceptionDescribe();
}
if(cls != 0){
jmethodID constructor = env->GetMethodID(cls, "<init>", "()V");
jobject object = env->NewObject(cls, constructor);
jmethodID mAC = env->GetMethodID(cls, "deleteIndividual", "(Ljava/lang/String;Ljava/lang/String;)V");
if(mAC != 0){
jstring path = env->NewStringUTF(owlPath.c_str());
jstring individualNameTemp = env->NewStringUTF(individualName.c_str());
jobject jAdd = env->CallObjectMethod(object, mAC, path, individualNameTemp);
if(env->ExceptionOccurred()){
env->ExceptionDescribe();
}
}
}
}
}
你知道它为什么会崩溃,或者我如何让应用程序在调试下工作吗?如果没有使用调试函数的能力,很难开发应用程序。
谢谢你的问候
我从这里得到我的环境。这是我如何启动jvm的:
void initJVM(){
std::string dPath = "-Djava.class.path=/svn/owl/OWLApiExample/bin";
char *cstr = new char[dPath .length()+1];
strcpy(cstr, dPath .c_str());
options[0].optionString = cstr;
options[1].optionString = "-Djava.library.path=/svn/owl/OWLApiExample/lib";
options[2].optionString = "-verbose:jni";
vm_args.version = JNI_VERSION_1_6;
vm_args.nOptions = 1;
vm_args.options = options;
vm_args.ignoreUnrecognized = 0;
JNI_GetDefaultJavaVMInitArgs(&vm_args);
jvmStatus = JNI_CreateJavaVM(&jvm, (void**)&env, &vm_args);
if(jvmStatus != JNI_ERR){
//log
}else{
jsize nVMs;
jvmStatus = JNI_GetCreatedJavaVMs(NULL, 0, &nVMs); // 1. just get the required array length
jvmStatus = JNI_GetCreatedJavaVMs(&jvm, nVMs, &nVMs); // 2. get the data
jvmStatus = jvm->GetEnv((void**)&env, JNI_VERSION_1_6);
if (jvmStatus == JNI_EDETACHED){
if (jvm->AttachCurrentThread((void**) &env, NULL) != 0) {
//log
}else{
}else if (jvmStatus == JNI_EVERSION) {
//log
}
}
}
暂无答案!
目前还没有任何答案,快来回答吧!