使用多线程进行网图下载

1.下载commons-io-2.2.jar，放进项目中

public class LianXiThread extends Thread{
    private String url;
    private String name;

	//定义构造方法
	public LianXiThread(String url, String name){
        this.url = url;
        this.name = name;
    }

	//重写run()方法
    @Override
    public void run() {
    	//new 出一个WebDownloader 对象
        WebDownloader webDownloader = new WebDownloader();
        //调用下载方法
        webDownloader.downloader(url, name);
        System.out.println("下载了名为：" + name);
    }

    public static void main(String[] args) {
        LianXiThread t1 = new LianXiThread("http://img.keaitupian.cn/newupload/08/1629793828632844.jpg", "1.jpg");
        LianXiThread t2 = new LianXiThread("http://img.keaitupian.cn/newupload/08/1629793443133324.jpg", "2.jpg");
        LianXiThread t3 = new LianXiThread("http://img.keaitupian.cn/newupload/08/1629792944161959.jpg", "3.jpg");

        t1.start();
        t2.start();
        t3.start();
    }


    //下载器
    class WebDownloader{
        //下载方法
        public void downloader(String url, String name) {
            try {
                FileUtils.copyURLToFile(new URL(url), new File(name));
            }catch (Exception e){
                e.printStackTrace();
                System.out.println("IO异常,downloader出现问题");
            }
        }
    }
}

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下载成功