string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%89%93%E5%BC%80raw%E6%A0%BC%E5%BC%8F%E5%9B%BE%E7%89%87%E9%83%BD%E4%BC%9A%E5%8F%98%E6%9A%97 => Failed to connect to 14.18.46.51 port 38044: Connection refused"
打开raw格式图片都会变暗
