客户端(Winform窗体）上传文件到服务器（web窗体）简单例子

客户端：先创建一个winform窗体的应用程序项目

项目结构

winform窗体布局分配好，需要一个文本框，两个按钮，一个进度条，几个label标签

具体如下：

客户端代码如下：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace UpFileClient
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

string filePath = “”;
        private void btnSelect_Click(object sender, EventArgs e)
        {
            //创建文件弹出选择窗口（包括文件名）对象
            OpenFileDialog ofd = new OpenFileDialog();
            //判断选择的路径
            if (ofd.ShowDialog() == DialogResult.OK)
            {
                this.txtSoundPath.Text = ofd.FileName.ToString();
            }
            filePath = this.txtSoundPath.Text;
        }

private void btnUpSound_Click(object sender, EventArgs e)
        {
            try {
                //上传服务器的地址（web服务）
                string address = “http://localhost:28207/WebService/SaveFileWebForm.aspx”;
                //上传后文件保存的名称
                string saveName = DateTime.Now.ToString(“yyyyMMddHHmmss”);
                int count = UpSound_Request(address, filePath, saveName, this.progressBar1);
                if (count > 0)
                {
                    MessageBox.Show(“上传文件成功！”);
                }
                else
                {
                    MessageBox.Show(“上传文件失败！”);
                }
            }catch(Exception ex){
                MessageBox.Show(“”+ex.GetBaseException());
            }

        }

/// <summary>
        /// 上传录音文件
        /// </summary>
        /// <param name=”address”>文件上传到服务器的路径</param>
        /// <param name=”fileNamePath”>要上传的本地路径（全路径）</param>
        /// <param name=”saveName”>文件上传后的名称</param>
        /// <returns>成功返回1，失败返回2</returns>
        public int UpSound_Request(string address, string fileNamePath, string saveName, ProgressBar progressBar)
        {
            int returnValue = 0;
            //要上传的文件
            FileStream fs = new FileStream(fileNamePath, FileMode.Open, FileAccess.Read);
            //二进制对象
            BinaryReader r = new BinaryReader(fs);
            //时间戳
            string strBoundary = “———-” + DateTime.Now.Ticks.ToString(“x”);
            byte[] boundaryBytes = Encoding.ASCII.GetBytes(“\r\n–” + strBoundary + “\r\n”);
            //请求的头部信息
            StringBuilder sb = new StringBuilder();
            sb.Append(“–“);
            sb.Append(strBoundary);
            sb.Append(“\r\n”);
            sb.Append(“Content-Disposition: form-data; name=\””);
            sb.Append(“file”);
            sb.Append(“\”; filename=\””);
            sb.Append(saveName);
            sb.Append(“\”;”);
            sb.Append(“\r\n”);
            sb.Append(“Content-Type: “);
            sb.Append(“application/octet-stream”);
            sb.Append(“\r\n”);
            sb.Append(“\r\n”);
            string strPostHeader = sb.ToString();
            byte[] postHeaderBytes = Encoding.UTF8.GetBytes(strPostHeader);
            // 根据uri创建HttpWebRequest对象
            HttpWebRequest httpReq = (HttpWebRequest)WebRequest.Create(new Uri(address));
            httpReq.Method = “POST”;
            //对发送的数据不使用缓存
            httpReq.AllowWriteStreamBuffering = false;
            //设置获得响应的超时时间（300秒）
            httpReq.Timeout = 300000;
            httpReq.ContentType = “multipart/form-data; boundary=” + strBoundary;
            long length = fs.Length + postHeaderBytes.Length + boundaryBytes.Length;
            long fileLength = fs.Length;
            httpReq.ContentLength = length;
            try
            {
                progressBar.Maximum = int.MaxValue;
                progressBar.Minimum = 0;
                progressBar.Value = 0;
                //每次上传4k
                int bufferLength = 4096;
                byte[] buffer = new byte[bufferLength]; //已上传的字节数
                long offset = 0;         //开始上传时间
                DateTime startTime = DateTime.Now;
                int size = r.Read(buffer, 0, bufferLength);
                Stream postStream = httpReq.GetRequestStream();         //发送请求头部消息
                postStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
                while (size > 0)
                {
                    postStream.Write(buffer, 0, size);
                    offset += size;
                    progressBar.Value = (int)(offset * (int.MaxValue / length));
                    TimeSpan span = DateTime.Now – startTime;
                    double second = span.TotalSeconds;
                    labTime.Text = “已用时：” + second.ToString(“F2”) + “秒”;
                    if (second > 0.001)
                    {
                        labSpeed.Text = “平均速度：” + (offset / 1024 / second).ToString(“0.00”) + “KB/秒”;
                    }
                    else
                    {
                        labSpeed.Text = ” 正在连接…”;
                    }
                    labState.Text = “已上传：” + (offset * 100.0 / length).ToString(“F2”) + “%”;
                    labSize.Text = (offset / 1048576.0).ToString(“F2”) + “M/” + (fileLength / 1048576.0).ToString(“F2”) + “M”;
                    Application.DoEvents();
                    size = r.Read(buffer, 0, bufferLength);
                }
                //添加尾部的时间戳
                postStream.Write(boundaryBytes, 0, boundaryBytes.Length);
                postStream.Close();
                //获取服务器端的响应
                WebResponse webRespon = httpReq.GetResponse();
                Stream s = webRespon.GetResponseStream();
                //读取服务器端返回的消息
                StreamReader sr = new StreamReader(s);
                String sReturnString = sr.ReadLine();
                s.Close();
                sr.Close();
                if (sReturnString == “Success”)
                {
                    returnValue = 1;
                }
                else if (sReturnString == “Error”)
                {
                    returnValue = 0;
                }
            }
            catch
            {
                returnValue = 0;
            }
            finally
            {
                fs.Close();
                r.Close();
            }
            return returnValue;
        }

}
}
客户端上传文件的效果图：

服务器端：

创建一个web mvc4项目，在创建一个webservice文件夹，在文件夹下创建一个SaveFileWebForm.axpx接口，

设置这个页面为项目起始页，打开这个页面，右键查看代码，编写服务器端代码，运行项目

项目结构：

客户端上传文件时，服务器端（SaveFileWebForm.axpx）需要访问的到，（注：先运行服务器程序项目，在运行客户端程序项目）

服务器端源码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace SaveFileWebService.WebService
{
    public partial class SaveFileWebForm : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (Request.Files.Count > 0)
            {
                try
                {
                    //得到客户端上传的文件
                    HttpPostedFile file = Request.Files[0];
                    //服务器端要保存的路径
                    string filePath = “D:\\Test\\” + file.FileName + “.mp3”;
                    file.SaveAs(filePath);
                    //返回结果
                    Response.Write(“Success”);
                }
                catch
                {
                    Response.Write(“Error”);
                }
            }
            else
            {
                Response.Write(“Error1”);
            }
        }
    }
}

服务器接收后文件如下图：

PS：客户端上传文件到服务器端的demo下载地址：http://pan.baidu.com/s/1nuSP3c9

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