Java 实例 – 网页抓取
Java 实例
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:
/* author by w3cschool.cn Main.java */ 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.w3cschool.cn"); 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):
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"/> <meta http-equiv="X-UA-Compatible" content="IE=11,IE=10,IE=9,IE=8"/>……
Java 实例