1.html代码:
<asp:FileUpload runat="server" ID="UpLoadFile"/> <asp:Button runat="server" ID="btnUpLoad" OnClick="btnUpLoad_Click" Text="上传"/>
html代码
2.后台代码:
public partial class UpLoadFilesByStream : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } /// <summary> /// 上传 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> protected void btnUpLoad_Click(object sender, EventArgs e) { //对于文件的格式和大小的判断,在上一篇已经涉及,这里省略。 if (this.UpLoadFile.HasFile) { //HttpPostedFile类提供对客户端已上载的单独文件的访问 HttpPostedFile hpf = this.UpLoadFile.PostedFile; //HttpPostedFile hpf = Request.Files[0]; //文件名 string fileName = Path.GetFileName(hpf.FileName); //文件大小,单位字节 int fileContentLength = hpf.ContentLength; //上传路径 string filePath = Server.MapPath("/Files/"); //二进制数组 byte[] fileBytes = null; fileBytes = new byte[fileContentLength]; //创建Stream对象,并指向上传文件 Stream fileStream = hpf.InputStream; //从当前流中读取字节,读入字节数组中 fileStream.Read(fileBytes, 0, fileContentLength); //全路径(路劲+文件名) string fullPath = filePath + fileName; //保存到磁盘 SaveToDisk(fileBytes, fullPath); } } /// <summary> /// 保存到磁盘 /// </summary> /// <param name="bytes">字节数组</param> /// <param name="saveFullPath">全路径</param> /// <returns></returns> public void SaveToDisk(byte[] bytes, string saveFullPath) { var fullPath = Path.GetDirectoryName(saveFullPath); //如果没有此文件夹,则新建 if (!Directory.Exists(fullPath)) { Directory.CreateDirectory(fullPath); } //创建文件,返回一个 FileStream,它提供对 path 中指定的文件的读/写访问。 using (FileStream stream = File.Create(saveFullPath)) { //将字节数组写入流 stream.Write(bytes, 0, bytes.Length); stream.Close(); } } }
.cs代码
测试通过!
时间: 2024-09-27 19:02:37