代码如下
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
public class Main {
    private String u;
    private String encoding;
    public static void main(String[] args) throws Exception {
        Main client = new Main("http://www.baidu.com/", "UTF-8");
        client.run();
    }
    public Main(String u, String encoding) {
        this.u = u;
        this.encoding = encoding;
    }
    public void run() throws Exception {
        URL url = new URL(u);// 根据链接(字符串格式),生成一个URL对象
        HttpURLConnection urlConnection = (HttpURLConnection) url
                .openConnection();// 打开URL
        BufferedReader reader = new BufferedReader(new InputStreamReader(
                urlConnection.getInputStream(), encoding));// 得到输入流,即获得了网页的内容
        String line; // 读取输入流的数据,并显示
        while ((line = reader.readLine()) != null) {
            System.out.println(line);
        }
    }
}原文:http://blog.csdn.net/wenzhilanyu2012/article/details/45402659