string(244) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=java%E7%8E%AF%E5%A2%83%E5%8F%98%E9%87%8F%E8%BF%90%E8%A1%8C%E5%A4%B1%E8%B4%A5 => Failed to connect to 101.89.143.195 port 38109: Connection refused"
java环境变量运行失败
