string(234) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%80%8E%E4%B9%88%E5%B0%86cad%E6%96%87%E4%BB%B6%E5%8F%98%E5%B0%8F => Failed to connect to 101.89.143.195 port 38205: Connection refused"
怎么将cad文件变小
