Java根據一個網址鏈接獲取源代碼

package test;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class HttpTest {
    private String u;
    private String encoding;

    public static void main(String[] args) throws Exception {
        HttpTest client = new HttpTest("http://www.baidu.com/", "UTF-8");
        client.run();
    }

    public HttpTest(String u, String encoding) {
        this.u = u;
        this.encoding = encoding;
    }

    public void run() throws Exception {

        URL url = new URL(u);// 根據鏈接（字符串格式），生成一個URL對象

        HttpURLConnection urlConnection = (HttpURLConnection) url
                .openConnection();// 打開URL

        BufferedReader reader = new BufferedReader(new InputStreamReader(
                urlConnection.getInputStream(), encoding));// 得到輸入流，即獲得了網頁的內容
        String line; // 讀取輸入流的數據，並顯示
        while ((line = reader.readLine()) != null) {
            System.out.println(line);
        }
    }
}