在使用 ArcGIS JavaScript 进行开发的时候，虽然已经把 引用的  js 和 css 文件进行了离线部署，

但是有个问题，在调用的字体文件时，也就是调用 pbf 文件时，调用的仍然是在线的，而且速度很慢，

整个页面加载的时间和加载 pbf 文件的时间差不多了，实在无法忍受，准备下载离线部署，网上搜了几个

发现要么不支持中文，要么就是要分特别高。只能自己动手写个程序下载了。

代码很简单，是 C# 的。

using System;
using System.IO;
using System.Net;

namespace pbfDownload
{
    class Program
    {
        static void Main(string[] args)
        {
            var regularUrl = "https://static.arcgis.com/fonts/arial-unicode-ms-regular/";
            var boldUrl = "https://static.arcgis.com/fonts/arial-unicode-ms-bold/";

            var regularFolder = @"D:FontsegularFolder"; //目录要先手动建好，这里主要是下载，就不循环路径自动建文件夹了。
            var boldFolder = @"D:FontsoldFolder";

            var NetURL = new string[2] { boldUrl, regularUrl };

            var downFolder = new string[2] {boldFolder,regularFolder};

            for (int u = 0; u < 2; u++)
            {
                var downurl = NetURL[u];

                var downFold = downFolder[u];

                for (int i = 0; i < 257; i++)
                {
                    double si = i * 256;
                    double ei = (i + 1) * 256 - 1;

                    var fileName = si.ToString() + "-" + ei.ToString() + ".pbf";

                    var fileUrl = downurl + fileName;

                    var fileDown = downFold + fileName;

                    HttpDownloadFile(fileUrl, fileDown);
                }

            }

        }

        /// <summary>
        /// Http下载文件
        /// </summary>
        public static void HttpDownloadFile(string url, string path)
        {
            try
            {
                // 设置参数
                HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
                //发送请求并获取相应回应数据
                HttpWebResponse response = request.GetResponse() as HttpWebResponse;
                //直到request.GetResponse()程序才开始向目标网页发送Post请求
                Stream responseStream = response.GetResponseStream();
                //创建本地文件写入流
                Stream stream = new FileStream(path, FileMode.Create);
                byte[] bArr = new byte[1024];
                int size = responseStream.Read(bArr, 0, (int)bArr.Length);
                while (size > 0)
                {
                    stream.Write(bArr, 0, size);
                    size = responseStream.Read(bArr, 0, (int)bArr.Length);
                }
                request.Abort();
                response.Close();
                responseStream.Close();
                stream.Close();
                Console.WriteLine("File:" + path);
            }
            catch(Exception ex)
            {
                Console.WriteLine("File:" + path);
                Console.WriteLine("Error:"+ ex.Message);
            }
            
            //return path;
        }
    }
}