public static void downloadImage() {
    HttpClient httpClient = new HttpClient();
    GetMethod getMethod = new GetMethod(
        "http://yuncode.net/upload/headicon/4/c/pic_518d1ed6604c4.jpg");
    for (int i = 0; i < 30; i++) {
        try {
            // 执行getMethod
            int statusCode = httpClient.executeMethod(getMethod);
            if (statusCode != HttpStatus.SC_OK) {
                System.err.println("Method failed: "
                                   + getMethod.getStatusLine());
            }
            // 读取内容
            String picName = "img//" + i + ".jpg";
            InputStream inputStream = getMethod.getResponseBodyAsStream();
            OutputStream outStream = new FileOutputStream(picName);
            IOUtils.copy(inputStream, outStream);
            outStream.close();
            System.out.println("OK!");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            // 释放连接
            getMethod.releaseConnection();
        }
    }
}