// 设置头像
[_headImageView sd_setImageWithURL:[NSURL URLWithString:_responseModel.ImgUrl] placeholderImage:[UIImage imageNamed:@"toux1"]];
因为图片上传的路径是一样的，加上SDWebImage的缓存影响，所以图片一直是旧的！
修改如下：
[_headImageView sd_setImageWithURL:[NSURL URLWithString:_responseModel.ImgUrl] placeholderImage:[UIImage imageNamed:@"toux1"] options:SDWebImageAllowInvalidSSLCertificates & SDWebImageRefreshCached];
发现问题依旧不能解决
最终解决方案：直接调用缓存来清理图片：
[[SDImageCache sharedImageCache] removeImageForKey:_responseModel.ImgUrl withCompletion:^{
[_headImageView sd_setImageWithURL:[NSURL URLWithString:_responseModel.ImgUrl] placeholderImage:[UIImage imageNamed:@"toux1"] options:SDWebImageAllowInvalidSSLCertificates & SDWebImageRefreshCached];
}];
