一、http后缀.pdf文件下载方法
/// <summary> /// http地址文件下载(url路径格式为:http://192.168.1.218:8088/1231_tr/1762062.pdf"}) /// </summary> /// <param name="filePath">http文件下载路径</param> /// <param name="startPath">文件保存路径c:C:\Downloads\ces.pdf</param> /// <returns></returns> public string httppdf(string filePath, string startPath) { try { //FileStream fs = new FileStream(startPath, FileMode.Append, FileAccess.Write, FileShare.ReadWrite); FileStream fs = null; // 设置参数 HttpWebRequest request = WebRequest.Create(filePath) as HttpWebRequest; //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 responseStream = response.GetResponseStream(); //创建本地文件写入流 //Stream stream = new FileStream(tempFile, FileMode.Create); byte[] bArr = new byte[4096]; int size = responseStream.Read(bArr, 0, (int)bArr.Length); if (size > 0) { fs = new FileStream(startPath, FileMode.Append, FileAccess.Write, FileShare.ReadWrite); while (size > 0) { //stream.Write(bArr, 0, size); fs.Write(bArr, 0, size); size = responseStream.Read(bArr, 0, (int)bArr.Length); } fs.Close(); } else { LogHelper.WriteLog(GetType(), "HttpDownloads:Return Nothing"); return ""; } responseStream.Close(); LogHelper.WriteLog(GetType(), "HttpDownloads:下载成功,文件路径为" + startPath); return startPath; } catch (Exception ex) { LogHelper.WriteLog(GetType(), "HttpDownloads:" + ex.Message); return ""; } }
二、http后缀.jpg文件下载方法
/// <summary> /// .jpg文件下载至本地(url路径格式为:http://192.168.1.219:8088/system/yanshi.jpg"}) /// </summary> /// <param name="filePath">下载路径</param> /// <param name="startPath">保存路径C:\Downloads\ce.jpg</param> /// <returns></returns> public string httpjpg(string filePath, string startPath) { LogHelper.WriteLog(GetType(), "httpjpg入参下载路径为:" + filePath + "保存路径为:" + startPath); string result = string.Empty; try { HttpWebRequest request = (HttpWebRequest)WebRequest.Create(filePath); HttpWebResponse response = (HttpWebResponse)request.GetResponse(); using (Stream stream = response.GetResponseStream()) { using (FileStream fileStream = File.Create(startPath)) { byte[] buffer = new byte[1024]; int bytesRead = 0; while ((bytesRead = stream.Read(buffer, 0, buffer.Length)) > 0) { fileStream.Write(buffer, 0, bytesRead); } } } response.Close(); } catch (Exception ex) { LogHelper.WriteLog(GetType(), "httpjpg异常错误为:" + ex.Message); return ""; } return startPath; } /// <summary> /// JPG转PDF /// </summary> /// <param name="jpgfile">图片路径C:\Downloads\ce.jpg</param> /// <param name="pdf">生成的PDF路径C:\Downloads\ce.pdf</param> /// <param name="pageSize">A4,A5</param> /// <param name="Vertical">True:纵向,False横向</param> public static void ConvertJPG2PDF(string jpgfile, string pdf, string pageSize, bool Vertical = true) { float width = 0, height = 0; Document document; #region 根据纸张大小,纵横向,设置画布长宽 if (pageSize.ToUpper() == "A4") { if (Vertical)//纵向 { width = iTextSharp.text.PageSize.A4.Width; height = iTextSharp.text.PageSize.A4.Height; } else//横向 { width = iTextSharp.text.PageSize.A4.Height; height = iTextSharp.text.PageSize.A4.Width; } } else if (pageSize.ToUpper() == "A5") { if (Vertical) { width = iTextSharp.text.PageSize.A5.Width; height = iTextSharp.text.PageSize.A5.Height; } else { width = iTextSharp.text.PageSize.A5.Height; height = iTextSharp.text.PageSize.A5.Width; } } iTextSharp.text.Rectangle pageSizeNew = new iTextSharp.text.Rectangle(width, height); document = new Document(pageSizeNew); #endregion using (var stream = new FileStream(pdf, FileMode.Create, FileAccess.Write, FileShare.None)) { PdfWriter.GetInstance(document, stream); document.Open(); using (var imageStream = new FileStream(jpgfile, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)) { var image = iTextSharp.text.Image.GetInstance(imageStream); //缩放图像比例 image.ScaleToFit(width, height); image.SetAbsolutePosition(0, 0); image.Alignment = iTextSharp.text.Image.ALIGN_MIDDLE; document.Add(image); } document.Close(); } }
三、http后缀.word文件下载方法
/// <summary> /// 下载word文件:http://222.128.103.58:21909/system-demo/public/img/ces.docx(也可用httpjpg方法进行下载) /// </summary> /// <param name="url">下载文件路径</param> /// <param name="filePath">下载文件保存路径:C:\Downloads\ces.docx</param> public void DownloadWordDocument(string url, string filePath) { var client = new WebClient(); client.DownloadFile(url, filePath); } /// <summary> /// word转pdf /// </summary> /// <param name="sourcePath">word文件路径C:\Downloads\CES.pdf</param> /// <param name="targetPath">保存pdf文件路径C:\Downloads\ces.pdf</param> /// <returns></returns> public static bool WordToPDFWithOffice(string sourcePath, string targetPath) { bool result = false; Microsoft.Office.Interop.Word.Application application = new Microsoft.Office.Interop.Word.Application(); Document document = null; try { application.Visible = false; document = application.Documents.Open(sourcePath); /* 参数参考 https://docs.microsoft.com/zh-cn/office/vba/api/visio.document.exportasfixedformat */ // document.ExportAsFixedFormat(targetPath, WdExportFormat.wdExportFormatPDF, false, WdExportOptimizeFor.wdExportOptimizeForPrint, WdExportRange.wdExportFromTo); document.ExportAsFixedFormat(targetPath, WdExportFormat.wdExportFormatPDF, false, WdExportOptimizeFor.wdExportOptimizeForPrint, WdExportRange.wdExportAllDocument); result = true; } catch (Exception e) { //Console.WriteLine(e.Message); result = false; } finally { document.Close(); } return result; }
标签:docx,http,string,C#,text,iTextSharp,new,pdf,document From: https://www.cnblogs.com/lydj/p/17283779.html