NSDateFormatter *fomatter = [[NSDateFormatter alloc] init];
[fomatter setDateFormat:@"MMM dd, yyyy hh:mm:ss"];
[fomatter setLocale:[[NSLocale alloc] initWithLocaleIdentifier:@"en_US"]];
NSDate *date = [fomatter dateFromString:@"Feb 9, 2017 5:21:21"];
NSDateFormatter *formatter2 = [[NSDateFormatter alloc] init];
[formatter2 setDateFormat:@"yyyy年MM月dd日"];
NSString *dateStr = [formatter2 stringFromDate:date];
DDLogInfo(@"%@",dateStr);
运行结果
