Java 實(shí)例 - 網(wǎng)頁(yè)抓取

Java 實(shí)例 Java 實(shí)例

以下實(shí)例演示了如何使用 net.URL 類的 URL() 構(gòu)造函數(shù)來(lái)抓取網(wǎng)頁(yè)：

/*
 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://hgci.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();
   }
}

以上代碼運(yùn)行輸出結(jié)果為（網(wǎng)頁(yè)的源代碼，存儲(chǔ)在當(dāng)前目錄下的 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 實(shí)例 Java 實(shí)例