string(241) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=xls%E6%96%87%E4%BB%B6%E4%BF%9D%E5%AD%98%E5%87%BA%E7%8E%B0%E9%94%99%E8%AF%AF => Failed to connect to 61.171.74.35 port 38027: Connection refused"
xls文件保存出现错误
