NSString * jsonPath=[[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"Contents.json"];
NSString * jsonStr=[[NSString alloc] initWithData:[NSData dataWithContentsOfFile:jsonPath] encoding:NSUTF8StringEncoding];
NSLog(@"%@",[JsonToDictionary diccionaryFromJsonString:jsonStr]);
JSON TO NSDictionary Mac & iOS
原文：http://www.cnblogs.com/springday/p/4817639.html