C#实现HTTP上传文件的方法
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2021-01-20
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C#实现实现HTTP上传文件的方法上传文件的方法
本文实例讲述了C#实现HTTP上传文件的方法。分享给大家供大家参考。具体实现方法如下：
发送文件代码如下：
代码如下:
/// <summary>
/// Http上传文件
/// </summary>
public static string HttpUploadFile(string url, string path)
{
// 设置参数
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
CookieContainer cookieContainer = new CookieContainer();
request.CookieContainer = cookieContainer;
request.AllowAutoRedirect = true;
request.Method = “POST”;
string boundary = DateTime.Now.Ticks.ToString(“X”); // 随机分隔线
request.ContentType = “multipart/form-data;charset=utf-8;boundary=” + boundary;
byte[] itemBoundaryBytes = Encoding.UTF8.GetBytes(“–” + boundary + “”);
byte[] endBoundaryBytes = Encoding.UTF8.GetBytes(“–” + boundary + “–\r”);
int pos = path.LastIndexOf(“\”);
string fileName = path.Substring(pos + 1);
//请求头部信息
StringBuilder sbHeader = new StringBuilder(string.Format(“Content-Disposition:form-
data;name=\”file\”;filename=\”{0}\”Content-Type:application/octet-stream”, fileName));
byte[] postHeaderBytes = Encoding.UTF8.GetBytes(sbHeader.ToString());
FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read);
byte[] bArr = new byte[fs.Length];
fs.Read(bArr, 0, bArr.Length);
fs.Close();
Stream postStream = request.GetRequestStream();
postStream.Write(itemBoundaryBytes, 0, itemBoundaryBytes.Length);
postStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
postStream.Write(bArr, 0, bArr.Length);
postStream.Write(endBoundaryBytes, 0, endBoundaryBytes.Length);
postStream.Close();
//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 instream = response.GetResponseStream();
StreamReader sr = new StreamReader(instream, Encoding.UTF8);
//返回结果网页（html）代码
string content = sr.ReadToEnd();
return content;
}
接收文件的代码如下：
代码如下:
using System;
using System.Web;
namespace SWX
{
public partial class test2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
HttpPostedFile file = Request.Files[0];
file.SaveAs(MapPath(“\UploadFile\” + file.FileName));
Response.Write(“Success”);
}
资源评论
王佛伟2023-07-26本标记语言 编辑器吗?
