类生成字典

-(NSDictionary *)toDictionary{
    
    @try {
        NSDictionary *dic = nil;
        unsigned int outCount, i;
        Class class = [self class];
        NSMutableArray *tmpKeys = [[NSMutableArray alloc] init];
        do{
            objc_property_t *properties = class_copyPropertyList(class, &outCount);
            for(i = 0; i < outCount; i++) {
                objc_property_t property = properties[i];
                NSString *key=[[NSString alloc]initWithCString:property_getName(property)encoding:NSUTF8StringEncoding];
                [tmpKeys addObject:key];
            }
            class = [class superclass];
        } while (class != [NSObject class]);
        
        dic = [self dictionaryWithValuesForKeys:tmpKeys];
        return dic;
        
    }
    @catch (NSException *exception) {
        NSLog(@"Warning: %@ Class dictionary exception: %@",[self class],[exception debugDescription]);
        
    }

}