获得URl信息

 

 

public class GetUrlInfo

{

    public static void printfInfo(URL url)throws Exception

    {

        //基本信息

        System.out.println("文件        "+url.getFile());

        System.out.println("Protocol        "+url.getProtocol());//获取URL的协议名称

        System.out.println("host        "+url.getHost());

        System.out.println("端口        "+url.getPort());//获取URl的端口号

        System.out.println("路径        "+url.getPath());//获取URL的路径部分

 

 

        URLConnection c=url.openConnection();

        c.connect();

        System.out.println("Contend type        "+c.getContentType());

        System.out.println("Contend Encoding        "+c.getContentEncoding());

        System.out.println("Contend Length        "+c.getContentLength());

        System.out.println("Date        "+new Date(c.getDate()));

        System.out.println("Date        "+new Date(c.getLastModified()));

        System.out.println("Expriration        "+new Date(c.getExpiration()));

 

        if(c instanceof HttpURLConnection)

        {

            HttpURLConnection h=(HttpURLConnection) c;

            System.out.println(" reust Method        "+h.getRequestMethod());

            System.out.println(" Resonse Message        "+h.getResponseMessage());

            System.out.println(" Resonse Code         "+h.getResponseCode());

        }

 

 

 

    }

 

    public static void vist(URL url)throws Exception//抓取某网站的内容

    {

 

        File file=new File("C:/hhh2.txt");

        String tempString;

        StringBuffer sb=new StringBuffer();

         //InputStream in=new InputStreamReader(url.openStream())

        BufferedReader in=new BufferedReader(new InputStreamReader(url.openStream()));

        BufferedWriter out=new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file)));

        while((tempString=in.readLine())!=null)

        {

            //out.write(tempString);

            //sb.append(tempString);

            System.out.println(tempString);

        }

        in.close();

        out.close();

        System.out.println(sb.toString());

    }

    public static void main(String []args)

    {

        String urlString="https://www.zhihu.com/question/48629658";

        try

        {

            URL url=new URL(urlString);

            System.out.println(url.getUserInfo());

            vist(url);

            //printfInfo(url);

        } catch (Exception e)

        {

            // TODO: handle exception

        }

 

    }

}