讀取本地json
NSString *jsonPath = [[NSBundle mainBundle ]pathForResource:@"temp.json" ofType:nil];
NSString *jsonStriing = [[NSString alloc]initWithContentsOfFile:jsonPath encoding:NSUTF8StringEncoding error:nil]涡贱；
NSDictionary *temptDic = [jsonStriing objectFromJSONString];
