java下载远程文件到本地

参数说明:
httpUrl:下载文件的地址
saveFile:本地保存的地址

public static boolean httpDownload(String httpUrl, String saveFile) {
        // 下载网络文件
        //int bytesum = 0;
        int byteread = 0;

        URL url = null;
        try {
            url = new URL(httpUrl);
        } catch (MalformedURLException e1) {
            e1.printStackTrace();
            return false;
        }

        try {
            URLConnection conn = url.openConnection();
            InputStream inStream = conn.getInputStream();
            FileOutputStream fs = new FileOutputStream(saveFile);

            byte[] buffer = new byte[1024];
            while ((byteread = inStream.read(buffer)) != -1) {
                //bytesum += byteread;
                //System.out.println(bytesum);
                fs.write(buffer, 0, byteread);
            }
            inStream.close();
            fs.close();
            return true;
        } catch (FileNotFoundException e) {
            e.printStackTrace();
            return false;
        } catch (IOException e) {
            e.printStackTrace();
            return false;
        }
    }