java实现下载文件到指定目录（项目亲测）

下载文件到指定目录

/** * 下载文件到指定目录 * @param dowUrl:http地址 * @param dowPath:指定目录 * */
    public static String download(String dowUrl, String dowPath){ 
        try { 
		log.info("下载地址是："+dowUrl+",存储地址是："+dowPath);
            URL url = new URL(dowUrl);

            URLConnection urlConnection = url.openConnection();

            HttpURLConnection httpURLConnection = (HttpURLConnection) urlConnection;// http的连接类

            //String contentType = httpURLConnection.getContentType();//请求类型,可用来过滤请求，

            httpURLConnection.setConnectTimeout(1000*5);//设置超时

            httpURLConnection.setRequestMethod("POST");//设置请求方式，默认是GET

            httpURLConnection.setRequestProperty("Charset", "UTF-8");// 设置字符编码

            httpURLConnection.connect();// 打开连接

            BufferedInputStream bin = new BufferedInputStream(httpURLConnection.getInputStream());

            String path = dowPath;// 指定存放位置
            File filed = new File(path);

            OutputStream out = new FileOutputStream(filed);
            int size = 0;

            byte[] b = new byte[2048];
            //把输入流的文件读取到字节数据b中，然后输出到指定目录的文件
            while ((size = bin.read(b)) != -1) { 
                out.write(b, 0, size);
            }
            // 关闭资源
            bin.close();
            out.close();
			return "200";
        } catch (MalformedURLException e) { 
            // TODO Auto-generated catch block
            e.printStackTrace();
            return "500";
        } catch (IOException e) { 
            // TODO Auto-generated catch block
            e.printStackTrace();
			return "400";
        }
    }

有问题可以留言，大家一起探讨，自己测试没有问题。