java通过网页上的下载连接下载文件到本地操作

 public static void downloadFile(String fileUrl,String fileLocal) throws Exception {
		          URL url = new URL(fileUrl);
		          HttpURLConnection urlCon = (HttpURLConnection) url.openConnection();
		          urlCon.setConnectTimeout(6000);
		          urlCon.setReadTimeout(6000);
		        int code = urlCon.getResponseCode();
		          if (code != HttpURLConnection.HTTP_OK) {
		             throw new Exception("文件读取失败");
		          }
		          
		          DataInputStream in = new DataInputStream(urlCon.getInputStream());
		          DataOutputStream out = new DataOutputStream(new FileOutputStream(fileLocal));
		         byte[] buffer = new byte[2048];
		        int count = 0;
		         while ((count = in.read(buffer)) > 0) {
		            out.write(buffer, 0, count);
		          }
		          out.close();
		         in.close();
		     }