需要对含有中文的部分进行转码
NSString *iconUrl = [iconUrl stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet
需要对含有中文的部分进行转码
NSString *iconUrl = [iconUrl stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet