string(270) "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%85%A7%E7%89%87%E6%89%93%E5%BC%80%E6%96%B9%E5%BC%8F%E6%98%AF%E4%BB%80%E4%B9%88 => Failed to connect to 101.89.166.210 port 38089: Connection refused"
raw格式照片打开方式是什么
