iOS JSON字典转模型model
iOS开发中，经常会用到字典转模型，咱们平常常用的是MJExstend框架，该框架功能完善，但是在咱们用的时候基本上只是在数据解析的时候会用到json字典转模型，仅此一个功能，你们庞大的一套框架，是不是有些浪费啦，所以咱们自己写一个小的分类，运用
#import
@interface NSObject (ZJExtend)
+(instancetype)modelWithJson:(NSDictionary *)json;
-(NSDictionary *)objClassInPropertyName;
-(NSString *)toString;
-(NSDictionary*)toDictionary;
@end
#import "NSObject+ZJExtend.h"
#import
@implementation NSObject (ZJExtend)
/** 属性名称里内存放的类型
* @{@"propertyName":@"Class"} 即属性名称：存放类型
*/
-(NSDictionary *)objClassInPropertyName{
return [NSDictionary dictionary];
}
+(instancetype)modelWithJson:(NSDictionary *)json{
id model = [[self alloc] init];
if (model && [json isKindOfClass:[NSDictionary class]]){
// 遍历所有属性 采用KVO赋值
unsigned int count;
objc_property_t *properties = class_copyPropertyList([model class], &count);
for(int i=0;i objc_property_t property = properties[i]; const char * name = property_getName(property); NSString * propertyName = [NSString stringWithCString:name encoding:NSUTF8StringEncoding]; // 取出对于的value id value = [json objectForKey:propertyName]; if([value isKindOfClass:[NSDictionary class]]){ id tempModel = [model handleJDictionaryJson:value WithPropertyName:propertyName]; [model setValue:tempModel forKey:propertyName]; }else if([value isKindOfClass:[NSArray class]]){ NSArray * tempArray = [model handleJArrayJson:value WithPropertyName:propertyName]; [model setValue:tempArray forKey:propertyName]; }else if([value isKindOfClass:[NSString class]]){ [model setValue:value forKey:propertyName]; }else if([value isKindOfClass:[NSNumber class]]){ NSString * string = [NSString stringWithFormat:@"%@",value]; [model setValue:string forKey:propertyName]; }else{ } } free(properties); } return model; } -(id)handleJDictionaryJson:(NSDictionary *)json WithPropertyName:(NSString *)propertyName{ NSDictionary * tempDictionary = [self objClassInPropertyName]; for(NSString * tempKey in [tempDictionary allKeys]){ if([tempKey isEqualToString:propertyName]){ //Class tempClass = NSClassFromString([tempDictionary objectForKey:tempKey]); Class tempClass = objc_getClass([[tempDictionary objectForKey:tempKey] UTF8String]); id model = [[tempClass new] modelWithJson:json]; //[self setValue:model forKey:propertyName]; return model; } } return nil; } -(NSArray*)handleJArrayJson:(NSArray *)json WithPropertyName:(NSString *)propertyName{ NSDictionary * tempDictionary = [self objClassInPropertyName]; for(NSString * tempKey in [tempDictionary allKeys]){ if([tempKey isEqualToString:propertyName]){ NSMutableArray * tempAarray = [NSMutableArray array]; for(id value in json){ if([value isKindOfClass:[NSDictionary class]]){ //Class tempClass = NSClassFromString([tempDictionary objectForKey:tempKey]); Class tempClass = objc_getClass([[tempDictionary objectForKey:tempKey] UTF8String]); [tempAarray addObject:[tempClass modelWithJson:value]]; }else if([value isKindOfClass:[NSArray class]]){ NSArray * subArray = [self handleJArrayJson:value WithPropertyName:propertyName]; [tempAarray addObject:subArray]; }else{ [tempAarray addObject:value]; } } return tempAarray; } } return [NSArray array]; } -(NSString *)toString{ NSDictionary * param = [self toDictionary]; NSError *error = nil; //NSLog(@" = = = = %@",param); NSData *jsonData = [NSJSONSerialization dataWithJSONObject:param options:NSJSONWritingPrettyPrinted error:&error]; if (error) { NSLog(@"Error occured when create json string representation, error: %@", error.localizedDescription); } NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding]; return jsonString; } /** 将自定义的对象转换成字典对象，属性名为键，属性值为值*/ -(NSDictionary *)toDictionary{ NSMutableDictionary * param = [NSMutableDictionary new]; if(![self isKindOfClass:[NSObject class]]){ return param; } unsigned int count; objc_property_t *properties = class_copyPropertyList([self class], &count); for(int i=0;i objc_property_t property = properties[i]; const char * name = property_getName(property); NSString * propertyName = [NSString stringWithCString:name encoding:NSUTF8StringEncoding]; id value = [self handleObjFromObj:[self valueForKey:propertyName]];; //NSLog(@"name == %@, id == %@",propertyName,value); [param setObject:value ? value : @"Null" forKey:propertyName]; } free(properties); return param; } -(NSDictionary*)handleStringFromDictionary:(NSDictionary*)dictionary{ [dictionary enumerateKeysAndObjectsUsingBlock:^(id _Nonnull key, id _Nonnull obj, BOOL * _Nonnull stop) { obj = [self handleObjFromObj:obj]; }]; return dictionary; } -(NSArray*)handleStringFromArray:(NSArray*)array{ [array enumerateObjectsUsingBlock:^(id _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) { obj = [self handleObjFromObj:obj]; }]; return array; } -(id)handleObjFromObj:(id)obj{ //NSLog(@"== %@",obj); if([obj isKindOfClass:[NSDictionary class]]){ obj = [self handleStringFromDictionary:obj]; }else if([obj isKindOfClass:[NSArray class]]){ NSMutableArray * tempArray = [NSMutableArray array]; for(id subObj in (NSArray*)obj){ [tempArray addObject:[self handleObjFromObj:subObj]]; } obj = tempArray; }else if([obj isKindOfClass:[NSNumber class]]){ obj = [NSString stringWithFormat:@"%@",obj]; }else if([NSBundle bundleForClass:[obj class]] == [NSBundle mainBundle]){ obj = [obj toDictionary]; } return obj; } @end