很多小伙伴都会遇到这样的问题，在定义model时，要自己写很多的属性，如果碰到属性特别多的时候，只能一个一个慢慢写了，很是麻烦。下面给大家一个简单的属性生成器代码：
// 自动生成属性声明的代码 + (void)propertyCodeWithDictionary:(NSDictionary *)dict { NSMutableString *strM = [NSMutableString string]; [dict enumerateKeysAndObjectsUsingBlock:^(id _Nonnull key, id _Nonnull obj, BOOL * _Nonnull stop) { NSString *str; NSLog(@"%@",[obj class]); if ([obj isKindOfClass:NSClassFromString(@"__NSCFString")] || [obj isKindOfClass:NSClassFromString(@"NSTaggedPointerString")] || [obj isKindOfClass:NSClassFromString(@"__NSCFConstantString")]) { str = [NSString stringWithFormat:@"@property (nonatomic, copy) NSString *%@;",key]; } if ([obj isKindOfClass:NSClassFromString(@"__NSCFNumber")]) { str = [NSString stringWithFormat:@"@property (nonatomic, assign) int %@;",key]; } if ([obj isKindOfClass:NSClassFromString(@"__NSCFArray")]) { str = [NSString stringWithFormat:@"@property (nonatomic, copy) NSArray *%@;",key]; } if ([obj isKindOfClass:NSClassFromString(@"__NSCFDictionary")]) { str = [NSString stringWithFormat:@"@property (nonatomic, copy) NSDictionary *%@;",key]; } if ([obj isKindOfClass:NSClassFromString(@"__NSCFBoolean")]) { str = [NSString stringWithFormat:@"@property (nonatomic, assign) BOOL %@;",key]; } [strM appendFormat:@"\n%@\n",str]; }]; NSLog(@"%@",strM); }使用起来也很简单， 就是写一个NSObiect的Categorty, 里面写入上述方法即可！
在网络请求的返回中，直接调用该方法，实现属性列表输出，如下所示：
@property (nonatomic, assign) int instalmentPeriods; @property (nonatomic, copy) NSString *thumbnailUrl; @property (nonatomic, assign) int goodsStatus; @property (nonatomic, assign) int goodId; @property (nonatomic, copy) NSString *goodTitle; @property (nonatomic, copy) NSString *goodsCode; @property (nonatomic, assign) int openType; @property (nonatomic, assign) int brandId; @property (nonatomic, assign) int originalPrice; @property (nonatomic, assign) int bannerId; @property (nonatomic, assign) int directPaymentAmount; @property (nonatomic, assign) int peroidInstalmentAmount; @property (nonatomic, copy) NSString *goodsName; @property (nonatomic, assign) int goodsOrder;是不是感觉很爽，再也不用一个一个手输了，哈哈。。。
