使用URL讀取網頁內容

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import java.net.*;import java.io.*;public class URLDemo {    public static void main(String[] args)    {        try        {            //利用Java.net中的URL類來擷取資源            URL url=new URL("https://www.baidu.com");            URLConnection urlConnection=url.openConnection();            HttpURLConnection connection=null;            if(urlConnection instanceof HttpURLConnection)                connection=(HttpURLConnection)urlConnection;            else            {                System.out.println("請輸入有效URL地址");                return;            }            InputStreamReader isr=new InputStreamReader(connection.getInputStream(),"UTF-8");            BufferedReader in=new BufferedReader(isr);            String current;            while((current=in.readLine())!=null)            {                System.out.println(current);            }        }        catch(IOException e)        {            e.printStackTrace();        }    }}

 

使用URL讀取網頁內容