原因是没即时释放对象，原本的代码是这样

static jobject getMaps(JNIEnv *env,jclass obj){	jclass stringbuilder_class = (*env)->FindClass(env,"java/lang/StringBuilder");		jmethodID init_stringbuilder_Method = (*env)->GetMethodID(env,stringbuilder_class,"
     
      ","()V");		jobject stringbuilder_obj=(*env)->NewObject(env,stringbuilder_class,init_stringbuilder_Method);				jmethodID append_Method = (*env)->GetMethodID(env,stringbuilder_class,"append","(Ljava/lang/Object;)Ljava/lang/StringBuilder;");		FILE * fileP;	char item[200]="ii";		fileP = fopen( "/proc/self/maps","r");		if(!fileP)		return stringbuilder_obj;	while(fgets(item,sizeof(item),fileP)!=NULL)	{			jstring str = (*env)->NewStringUTF(env,item);				(*env)->CallObjectMethod(env,stringbuilder_obj,append_Method,str);				(*env)->ReleaseStringUTFChars(env,str,item);		(*env)->DeleteLocalRef(env,str);	}	return stringbuilder_obj;	}
     

 

直接看去好像没什么问题，但是每调用一次    (*env)->CallObjectMethod(env,stringbuilder_obj,append_Method,str)

 

;都会产生个对象，我一开始以为这样没事，改成这样程序就不崩了

 

static jobject getMaps(JNIEnv *env,jclass obj){	jclass stringbuilder_class = (*env)->FindClass(env,"java/lang/StringBuilder");		jmethodID init_stringbuilder_Method = (*env)->GetMethodID(env,stringbuilder_class,"
     
      ","()V");		jobject stringbuilder_obj=(*env)->NewObject(env,stringbuilder_class,init_stringbuilder_Method);				jmethodID append_Method = (*env)->GetMethodID(env,stringbuilder_class,"append","(Ljava/lang/Object;)Ljava/lang/StringBuilder;");		FILE * fileP;	char item[200]="ii";		fileP = fopen( "/proc/self/maps","r");		if(!fileP)		return stringbuilder_obj;	while(fgets(item,sizeof(item),fileP)!=NULL)	{			jstring str = (*env)->NewStringUTF(env,item);		//加个temp用来释放		jobject temp=(*env)->CallObjectMethod(env,stringbuilder_obj,append_Method,str);				(*env)->ReleaseStringUTFChars(env,str,item);		(*env)->DeleteLocalRef(env,str);		(*env)->DeleteLocalRef(env,temp);	}	return stringbuilder_obj;	}