Java 实例 - 网页抓取

以下实例演示了如何使用 net.URL 类的 URL() 构造函数来抓取网页：

Main.java 文件

import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.FileWriter; import java.io.InputStreamReader; import java.net.URL;   public class Main {    public static void main(String[] args)     throws Exception {       URL url = new URL("http://www.runoob.com");       BufferedReader reader = new BufferedReader       (new InputStreamReader(url.openStream()));       BufferedWriter writer = new BufferedWriter       (new FileWriter("data.html"));       String line;       while ((line = reader.readLine()) != null) {          System.out.println(line);          writer.write(line);          writer.newLine();       }       reader.close();       writer.close();    } }

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