string(250) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=raw%E6%A0%BC%E5%BC%8F%E7%9A%84%E5%9B%BE%E7%89%87%E6%80%8E%E4%B9%88%E6%89%93%E5%BC%80 => Failed to connect to 61.171.74.35 port 38027: Connection refused"
raw格式的图片怎么打开
