字典拼接URL形式

前言：移动端网络请求参数已字典形式给到后端

无奈后端小白同学获取有问题只能我这边将参赛拼接URL，再已GET方式请求。

- (NSString *)paramsEncodeToFormString:(NSDictionary *)params{
    
     NSMutableString *result = [NSMutableString string];
    
    if(params&&params.count>0) {
        
        NSInteger keyCount =0;
        
        for(NSString*key in [params allKeys]) {
            
            if(keyCount >0) {
                
                [result appendString:@"&"];
                
            }
            
            NSString*parameter =params[key];
            
            if([parameter isKindOfClass:[NSString class]]) {
                
                parameter = [parameter stringByURLEncode];
                
            }
            
            [result appendFormat:@"%@=%@", key, parameter];
            
            keyCount++;
            
        }
        
    }
    
    if(result.length>0) {
        
        NSString *result_n = [result stringByReplacingOccurrencesOfString:@" " withString:@""];
        
        result_n = [result_n stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
        
        return result_n;
        
    }
    
    return @"";
    
}