SongKer 发布时间:2016-10-13 分类:.NET 阅读:7290次 添加评论
使用的Mvc,直接返回byte格式的数据,文本及图片都可以直接返回。注释已经很清楚了,代码如下:
public class HomeController : Controller { /// <summary> /// 本地请求中转 /// </summary> /// <returns></returns> public byte[] Index() { //跨域访问 HttpContext.Response.AppendHeader("Access-Control-Allow-Origin", "*"); var respone = HttpContext.Response; var request = HttpContext.Request; //初始化 本应用程序 Url string FromUrl = request.Url.ToString(); //获取实际请求目标的HOST //string ToHost = "192.168.20.1:8080"; if (string.IsNullOrWhiteSpace(Request["host"])) { return System.Text.Encoding.Default.GetBytes(""); } //获取实际请求目标的地址+参数 if (string.IsNullOrWhiteSpace(Request["query"])) { return System.Text.Encoding.Default.GetBytes(""); } string ToHost = Request["host"].ToString(); string query = Request["query"].ToString(); //请求的地址 string ToUrl = string.Format("http://{0}/{1}", ToHost, query); //创建 Http 请求 用于将 替换后 请求报文 发往 目标 Url System.Net.HttpWebRequest hRequest = System.Net.HttpWebRequest.CreateHttp(ToUrl); //设置请求头 foreach (var key in request.Headers.AllKeys) { try { hRequest.Headers.Add(key, request.Headers[key]); } catch (Exception) { continue; } } #region 设置特殊请求头 if (!string.IsNullOrEmpty(request.Headers["Accept"])) { hRequest.Accept = request.Headers["Accept"]; } if (!string.IsNullOrEmpty(request.Headers["Connection"])) { string connection = request.Headers["Connection"]; hRequest.KeepAlive = string.Compare(connection, "keep-alive", StringComparison.CurrentCultureIgnoreCase) == 0; } if (!string.IsNullOrEmpty(request.Headers["Content-Type"])) { hRequest.ContentType = request.Headers["Content-Type"]; } if (!string.IsNullOrEmpty(request.Headers["Expect"])) { hRequest.Expect = request.Headers["Expect"]; } if (!string.IsNullOrEmpty(request.Headers["Date"])) { hRequest.Date = Convert.ToDateTime(request.Headers["Date"]); } if (!string.IsNullOrEmpty(request.Headers["Host"])) { hRequest.Host = ToHost; } if (!string.IsNullOrEmpty(request.Headers["If-Modified-Since"])) { hRequest.IfModifiedSince = Convert.ToDateTime(request.Headers["If-Modified-Since"]); } if (!string.IsNullOrEmpty(request.Headers["Referer"])) { hRequest.Referer = request.Headers["Referer"].ToString(); } if (!string.IsNullOrEmpty(request.Headers["User-Agent"])) { hRequest.UserAgent = request.Headers["User-Agent"]; } if (!string.IsNullOrEmpty(request.Headers["Content-Length"])) { hRequest.ContentLength = Convert.ToInt32(request.Headers["Content-Length"]); } #endregion //判断是否是Get请求,如果不是Get就写入请求报文体 if (String.Compare(request.HttpMethod, "get", StringComparison.CurrentCultureIgnoreCase) != 0) { //设置请求体 hRequest.Method = "POST"; var hStream = hRequest.GetRequestStream(); byte[] hbuffer = new byte[1024 * 2]; int hLength = 0; do { hLength = Request.InputStream.Read(hbuffer, 0, hbuffer.Length); hStream.Write(hbuffer, 0, hLength); } while (hLength > 0); } //获取响应报文 System.Net.WebResponse hRespone = null; try { hRespone = hRequest.GetResponse(); } catch (Exception exp) { respone.Write(exp.Message); respone.End(); } //设置响应头 //this.SetResponeHead(hRespone, respone); foreach (var key in respone.Headers.AllKeys) { try { hRespone.Headers.Add(key, respone.Headers[key]); } catch (Exception) { continue; } } //#region 设置特殊响应头 if (!string.IsNullOrEmpty(hRespone.Headers["Content-Type"])) { respone.ContentType = hRespone.Headers["Content-Type"]; } if (!string.IsNullOrEmpty(hRespone.Headers["Host"])) { respone.AddHeader("Host", FromUrl); } if (!string.IsNullOrEmpty(hRespone.Headers["Referer"])) { respone.AddHeader("Referer", hRespone.Headers["Referer"]); } //#endregion //写入响应内容 //this.SetResponeBody(hRespone, respone); var nStream = hRespone.GetResponseStream(); byte[] buffer = new byte[1024 * 2]; int rLength = 0; do { rLength = nStream.Read(buffer, 0, buffer.Length); respone.OutputStream.Write(buffer, 0, rLength); } while (rLength > 0); respone.End(); return buffer; } }
发表评论:
◎欢迎您的参与讨论。