引用公众号的图片提示 “此图片来自微信公众平台未经允许不可引用”

解决办法：

使用后端中转

<img src="{:url('showImage', {type: '...url...'})}" />
public function showImage(){
    $url = $this->request->get('url');
    header('content_type:image/jpeg');
    echo getCurl($url);
}
function getCurl($url){
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL,$url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
    $result = curl_exec($ch);
    curl_close ($ch);
    return $result;
}