java 下载网络中在文件

URL url = new URL(Config.local + "/excel/" + name);
			HttpURLConnection httpConnection = (HttpURLConnection) url.openConnection();

			// 设置请求信息
			httpConnection.setRequestProperty("GET", "/down.zip HTTP/1.1");

			// 设置接受信息
			httpConnection.setRequestProperty("Accept", "image/gif,image/x-xbitmap,application/msword");

			// 设置连接信息
			httpConnection.setRequestProperty("Connection", "Keep-Alive");

			// 获得输入流
			InputStream input = httpConnection.getInputStream();

			// 创建随机文件
			flist.add(new File(name));
			RandomAccessFile oSavedFile = new RandomAccessFile(name, "rw");

			byte[] b = new byte[1024];
			int nRead;

			// 从输入流中读入字节流，然后写到文件中
			while ((nRead = input.read(b, 0, 1024)) > 0) {
				oSavedFile.write(b, 0, nRead);
			}

			input.close();
			oSavedFile.close();
			httpConnection.disconnect();