using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Net;
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using System.Net.Http;
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using System.Net.Http.Headers;
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using System.Text;
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using System.Web;
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using System.Web.Http;
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namespace ExportMap.cs
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{
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public class WebUtils
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{
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#region LFData
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private static string _lfData;
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public static string LFData
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{
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get
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{
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if (string.IsNullOrEmpty(_lfData))
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{
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_lfData = Tools.GetSetting("lfData");
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}
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return _lfData;
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}
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}
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#endregion
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/// <summary>
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/// 获取地形图层文件
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/// </summary>
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public static HttpResponseMessage GetLayerJson(HttpRequestMessage Request, string path)
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{
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string basePath = Path.Combine(LFData, path);
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if (!Directory.Exists(basePath))
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{
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throw new HttpResponseException(Request.CreateResponse(HttpStatusCode.BadRequest, "路径不存在！"));
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}
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string file = basePath + "\\layer.json";
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if (!File.Exists(file))
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{
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throw new HttpResponseException(Request.CreateResponse(HttpStatusCode.NotFound, "文件不存在！"));
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}
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return DownloadFile(file, "layer.json");
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}
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/// <summary>
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/// 获取地形文件
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/// </summary>
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public static HttpResponseMessage GetTerrain(HttpRequestMessage Request, string path, int z, int x, int y)
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{
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string basePath = Path.Combine(LFData, path);
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if (!Directory.Exists(basePath))
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{
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throw new HttpResponseException(Request.CreateResponse(HttpStatusCode.BadRequest, "路径不存在！"));
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}
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string file = basePath + "\\" + z + "\\" + x + "\\" + y + ".terrain";
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if (!File.Exists(file))
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{
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throw new HttpResponseException(Request.CreateResponse(HttpStatusCode.NotFound, "文件不存在！"));
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}
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return DownloadFile(file, y + ".terrain");
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}
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/// <summary>
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/// 获取地形文件，不存在返回空文件
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/// </summary>
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public static HttpResponseMessage GetTerrain0(HttpRequestMessage Request, string path, int z, int x, int y)
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{
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string basePath = Path.Combine(LFData, path);
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if (!Directory.Exists(basePath))
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{
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throw new HttpResponseException(Request.CreateResponse(HttpStatusCode.BadRequest, "路径不存在！"));
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}
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string file = basePath + "\\" + z + "\\" + x + "\\" + y + ".terrain";
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if (!File.Exists(file))
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{
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return DownloadFile(Tools.BaseDir + "\\Sources\\empty.terrain", y + ".terrain");
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}
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return DownloadFile(file, y + ".terrain");
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}
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/// <summary>
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/// 下载文件
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/// </summary>
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public static HttpResponseMessage DownloadFile(string file, string fileName)
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{
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//string fileName = Path.GetFileName(file);
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//FileStream stream = new FileStream(file, FileMode.Open);
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FileStream stream = File.OpenRead(file);
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HttpResponseMessage response = new HttpResponseMessage(HttpStatusCode.OK);
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response.Content = new StreamContent(stream);
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response.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment");
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response.Content.Headers.ContentDisposition.FileName = HttpUtility.UrlEncode(fileName);
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response.Content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
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//response.Content.Headers.Add("Cache-Control", "max-age=2592000"); // 缓存1个月
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response.Content.Headers.Expires = DateTimeOffset.Now.AddMonths(1); // new DateTimeOffset(DateTime.Now.AddMonths(1));
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return response;
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}
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/// <summary>
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/// Get请求
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/// </summary>
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public static string GetData(string url)
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{
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/*WebClient wc = new WebClient();
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Byte[] pageData = wc.DownloadData(url);
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Encoding coding = Encoding.GetEncoding("UTF-8");
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string str = coding.GetString(pageData);
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return str;*/
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Uri uri = new Uri(url);
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HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);
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request.Method = "GET";
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request.ContentType = "application/x-www-form-urlencoded";
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HttpWebResponse response = (HttpWebResponse)request.GetResponse();
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StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
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string str = reader.ReadToEnd();
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reader.Close();
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return str;
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}
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/// <summary>
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/// Post请求
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/// string data = string.Format("token={0}&f=json&where={1}", Token, "");
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/// </summary>
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public static string PostData(string url, string data)
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{
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Uri uri = new Uri(url);
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HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);
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request.Method = "POST";
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request.ContentType = "application/x-www-form-urlencoded";
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if (data != null)
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{
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byte[] bytes = Encoding.UTF8.GetBytes(data);
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request.ContentLength = bytes.Length;
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Stream outstream = request.GetRequestStream();
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outstream.Write(bytes, 0, bytes.Length);
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outstream.Flush();
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outstream.Close();
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}
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HttpWebResponse response = (HttpWebResponse)request.GetResponse();
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StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
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string result = reader.ReadToEnd();
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reader.Close();
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return result;
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}
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}
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}
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