cyf
139 lines
5.2 KiB
C#
139 lines
5.2 KiB
C#
/***********************
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* 说明：PDF签名合成
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* 创建人：龚宇超
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* 创建日期：2018-06-07
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* 修改人：
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* 修改日期：
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* 修改备注：
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* 版本：1.0.0.0
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***********************/
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Data;
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using Lskj.Business.Impl;
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using Lskj.Util;
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using System.IO;
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using iTextSharp.text.pdf;
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using System.Runtime.Serialization.Formatters.Binary;
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using System.Drawing;
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using System.Diagnostics;
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using System.Threading;
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namespace Lskj.Control.Model
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{
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public class PdfViewerHelper
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{
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/// <summary>
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/// <para>说明：</para>
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/// <para>创建人：龚宇超</para>
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/// <para>创建日期：2018-06-11 </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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/// <param name="pdfFileId">PDF主键.</param>
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/// <param name="pdfFileName">PDF文件名.</param>
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/// <param name="pdfFilePath">PDF路径</param>
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public static void CreateNewPdf(int pdfFileId,string pdfFileName, string pdfFilePath)
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{
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DataTable dt = AttachImpl.GetSignSources(pdfFileId);
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if (dt.Rows.Count > 0)
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{
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//复制一个作为读取模板，源文件作为操作流
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string newFilePath =PubUtil.MenuExcelPath + Guid.NewGuid() + ".pdf";
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File.Copy(pdfFilePath, newFilePath);
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using (Stream outputPdfStream = new FileStream(pdfFilePath, FileMode.Open, FileAccess.Write, FileShare.None))
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{
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using (PdfReader reader = new PdfReader(newFilePath))
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{
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PdfStamper stamper = new PdfStamper(reader, outputPdfStream);
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foreach (DataRow rowItem in dt.Rows)
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{
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//iTextSharp.text.Image 获取图片的方法直接传流会出错,先转图片
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MemoryStream ms = new MemoryStream((byte[])rowItem["Pic"], 0, ((byte[])rowItem["Pic"]).Length);
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BinaryFormatter bf = new BinaryFormatter();
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object obj = bf.Deserialize(ms);
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ms.Close();
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Image pic = obj as Image;
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iTextSharp.text.Image image = iTextSharp.text.Image.GetInstance(pic, pic.RawFormat);
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PointF point = new PointF(float.Parse(rowItem["ImageX"] + ""), float.Parse(rowItem["ImageY"] + ""));
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PdfContentByte pdfContentByte = stamper.GetOverContent(Convert.ToInt32(rowItem["Page"]) + 1);
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float percent = image.Height / image.Width * 100;
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image.ScalePercent(Convert.ToInt32(Math.Round(percent)));
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image.SetAbsolutePosition(point.X, point.Y);
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pdfContentByte.AddImage(image);
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}
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stamper.Close();
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}
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}
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File.Delete(newFilePath);
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}
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}
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/// <summary>
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/// <para>说明：验证下载完成(应对不能获取下载完成消息)</para>
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/// <para>创建人：龚宇超</para>
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/// <para>创建日期：2018-06-11 </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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public static void VerifyDownLoadFinish(string filePath,string fileName)
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{
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int i = 0;
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//进行20次查找
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while (i < 20)
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{
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try
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{
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if (File.Exists(filePath) && !SearchProc("LSTest"))
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{
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//是PDF文件就进行签名合成
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if (fileName.Contains(".pdf"))
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{
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CreateNewPdf(0,fileName, filePath);
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}
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return;
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}
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Thread.Sleep(500);
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}
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catch (Exception ex)
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{
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throw;
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}
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i++;
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}
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}
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/// <summary>
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/// <para>说明：查找进程里面是否还在下载</para>
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/// <para>创建人：龚宇超</para>
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/// <para>创建日期：2018-06-11 </para>
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/// <para>修改人：</para>
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/// <para>修改日期：</para>
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/// <para>修改备注：</para>
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/// <para>版本：1.0</para>
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/// </summary>
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/// <param name="strProcName">Name of the string proc.</param>
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/// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
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public static bool SearchProc(string strProcName)
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{
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try
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{
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//精确进程名 用GetProcessesByName
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Process[] ps = Process.GetProcessesByName(strProcName);
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return ps.Length > 0;
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}
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catch
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{
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return false;
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}
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}
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}
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}
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