Motis 使用 Cocoa 的 KVC 实现了智能的 JSON 到 NSObject 对象的映射。

示例代码：

// --- User.h --- //    @interface User : NSObject    @property (nonatomic, strong) NSString *name;  @property (nonatomic, assign) NSIntger userId;  @property (nonatomic, strong) NSDate *creationDate;  @property (nonatomic, strong) NSURL *website;  @property (nonatomic, assing) NSInteger views;  @property (nonatomic, assing) NSInteger ranking;    @end    // --- User.m --- //    @implementation User    + (NSDictionary*)mts_mapping  {      return @{@"user_name": mts_key(name),               @"user_id": mts_key(userId),               @"creation_date": mts_key(creationDate),               @"website": mts_key(website),               @"user_stats.views": mts_key(views),  // <-- KeyPath access               @"user_stats.ranking": mts_key(ranking), // <-- KeyPath access              };  }    @end

项目主页：http://www.open-open.com/lib/view/home/1398343004031