string(247) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%96%87%E4%BB%B6%E5%90%8D%E5%A6%82%E4%BD%95%E6%89%B9%E9%87%8F%E4%BF%AE%E6%94%B9 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
文件名如何批量修改
