上传图片和资源

最新推荐文章于 2025-02-18 15:38:38 发布

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本文详细介绍了资源上传和添加的方法，包括图片和文件格式验证、大小限制、唯一性检查及成功提示，确保资源的高效管理和安全性。

/// <summary>
    /// 添加方法
    /// </summary>
    public void add()
    {
        string alert = "";
        ResourcesTB Re = new ResourcesTB("");
        string rand = DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + DateTime.Now.Day.ToString() + DateTime.Now.Hour.ToString() + DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString();
        //获取图片信息

        FileInfo DeleteimgInfo = new FileInfo(Server.MapPath("UpLoad/") + Path.GetFileName(Re.ImageUrl));
        FileUpload imgUp = FileUploadImg;
        string ImageUrl = "~/Admin/UpLoad/" + Path.GetFileNameWithoutExtension(imgUp.PostedFile.FileName) + rand + Path.GetExtension(imgUp.PostedFile.FileName);
        FileInfo imginfo = new FileInfo(Server.MapPath("UpLoad/") + Path.GetFileNameWithoutExtension(imgUp.PostedFile.FileName) + rand + Path.GetExtension(imgUp.PostedFile.FileName));
        string imgType = Path.GetExtension(imgUp.PostedFile.FileName);

        //获取资源信息
        FileInfo DeletefileInfo = new FileInfo(Server.MapPath("UpLoad/") + Path.GetFileName(Re.FileUrl));
        FileUpload fileUp = FileUploadFile;
        string FileUrl = "/Admin/UpLoad/" + Path.GetFileNameWithoutExtension(fileUp.PostedFile.FileName) + rand + Path.GetExtension(fileUp.PostedFile.FileName);
        FileInfo fileinfo = new FileInfo(Server.MapPath("UpLoad/") + Path.GetFileNameWithoutExtension(fileUp.PostedFile.FileName) + rand + Path.GetExtension(fileUp.PostedFile.FileName));
        string fileType = Path.GetExtension(fileUp.PostedFile.FileName);

        Re.Name = ReplaceBadChar(this.TB_Name.Text.Trim());
        Re.ImageUrl = ImageUrl;
        Re.Content = ReplaceBadChar(this.TB_Content.Text.Trim());
        Re.AddTime = Convert.ToDateTime(this.TB_AddData.Text.ToString());
        Re.DownLoadPoint = Convert.ToInt32(this.TB_Point.Text.ToString());
        Re.FileUrl = FileUrl;
        Re.TypeId = Convert.ToInt32(this.DDL_Type.SelectedValue.ToString());
        if (imgType != ".jpg" && imgType != ".JPG" && imgType != ".gif" && fileType != ".GIF" && imgType != ".png" && imgType != ".PNG")
        {
            Page.RegisterStartupScript("", "<script> alert('上传图片格式只能是jpg、gif、png');</script>");
        }
        else if (imginfo.Exists)
        {
            Page.RegisterStartupScript("", "<script> alert('上传文件名已存在,请更改文件名！');</script>");
        }
        else if ((imgUp.PostedFile.ContentLength / (1024 * 1024)) > 1)
        {
            Page.RegisterStartupScript("", "<script> alert('上传图片大小不允许超过1M！');</script>");
        }
        if (fileType != ".zip" && fileType != ".ZIP" && fileType != ".rar" && fileType != ".RAR" && fileType != ".doc" && fileType != ".txt")
        {
            Page.RegisterStartupScript("", "<script> alert('上传资源格式只能是zip、rar、doc、txt');</script>");
        }
        else if (imginfo.Exists)
        {
            Page.RegisterStartupScript("", "<script> alert('上传文件名已存在,请更改文件名！');</script>");
        }
        else if ((imgUp.PostedFile.ContentLength / (1024 * 1024)) > 10)
        {
            Page.RegisterStartupScript("", "<script> alert('上传资源大小不允许超过10M！');</script>");
        }
        else if (Re.Add())
        {
            imgUp.PostedFile.SaveAs(Server.MapPath("UpLoad/") + Path.GetFileNameWithoutExtension(imgUp.PostedFile.FileName) + rand + Path.GetExtension(imgUp.PostedFile.FileName));
            fileUp.PostedFile.SaveAs(Server.MapPath("UpLoad/") + Path.GetFileNameWithoutExtension(fileUp.PostedFile.FileName) + rand + Path.GetExtension(fileUp.PostedFile.FileName));
            alert = "添加成功！";
            celear();
        }
        else
        {
            alert = "添加失败！";
        }
        querycondition = SearchCondition();
        Page.RegisterStartupScript("", "<script> alert('" + alert + "');</script>");
        this.dataBindToRepResouce(querycondition);
    }