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(); } }

以上代码运行输出结果为（网页的源代码，存储在当前目录下的 data.html 文件中）：