u013571833的专栏

curl -i -X HEAD "www.baidu.com"HTTP/1.1 200 OKServer: bfe/1.0.8.18Date: Mon, 12 Sep 2016 01:38:38 GMTContent-Type: text/htmlContent-Length: 277 （单位是字节）Last-Modified: Mon, 13 Jun 2016 02:50

// 方法一            URL url = new URL("http://www.sina.com.cn");           URLConnection urlcon = url.openConnection();           InputStream is = urlcon.getInputStream();                     

在网上查找了很久URLConnection IllegalStateException：Already connect的问题，但是还是找不到在这里记录一下，希望能帮到出现相同问题的朋友package network;/** * Created by fazhao on 16/9/15. */import java.io.*;import java.net.MalformedU