url 获取网络资源

public class Url {

/**

     * @param args

     * @throws IOException

     */

    public static void main(String[] args) throws IOException {
try {

            URL url= new URL("http://img2.haoju.cn/upfiles/201212/1355452132.jpg!mid");

            getInfo(url);

        } catch (MalformedURLException e) {

            System.out.println("您的网络出现问题了");

            e.printStackTrace();
}

    }
/**

     *获取url详细信息

     * @param url

     * @throws IOException

     */

    public static void getInfo(URL url) throws IOException{
//方法一

        URLConnection open = url.openConnection();
InputStream input = open.getInputStream();

        OutputStream output = new FileOutputStream("E:\\haoju.html");

        byte[] buffer = new byte[2048];

        int lenth = 0;

        while(-1 !=(lenth = input.read(buffer, 0, buffer.length))){

            output.write(buffer, 0, lenth);

        }

        input.close();

        output.close();
//方法二

        InputStream input = url.openStream();

        OutputStream output = new FileOutputStream("E:\\1.jpg");

        byte[] buffer = new byte[2048];

        int length =0;

        while( -1!=(length =input.read(buffer, 0, buffer.length))){

            output.write(buffer, 0, length);

        }

        input.close();

        output.close();

        System.out.println("----over----");
//方法三

        BufferedReader buffer = new BufferedReader(new InputStreamReader(url.openStream()));

        String line  = null;
while(null != (line=buffer.readLine())){

            System.out.println(line);

        }

        buffer.close();

    }

}

参照：http://www.cnblogs.com/mengdd/archive/2013/03/09/2951877.html

1，创建url对象

2，等到输入流

3，保存或者处理