.docx）文件

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

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/// <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;
}