Java 实例 – 网页抓取

最后更新于:2022-03-27 01:06:48

Java 实例 – 网页抓取

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:

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://docs.gechiui.com/w3school");
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 – 网页抓取 Java 实例