string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%94%B5%E5%95%86%E8%A6%81%E8%A7%A3%E5%86%B3%E7%9A%84%E4%B8%89%E4%B8%AA%E9%97%AE%E9%A2%98 => Failed to connect to 101.89.117.144 port 38056: Connection refused"
电商要解决的三个问题
