c#生成PDF准考证
项目中需要做一个生成PDF准考证的功能，在这里跟大家分享一下思路。。
1.首先是下载Adobe Acrobat 9 Pro，安装破解（高版本的貌似破解，不了，自带正版意识的略过。。随意下载）
2.新建模板。。下图是个演示版本，客户要求在一页显示四个准考证， 我实际上是做了4个模板，分别有1，2，3，4个准考证模板在上面
注意的是：一定不要设置错域属性，开发的时候，不小心把座位号 设置成了 图片域，死活填充不上数据其余都可以，。。。应该设置为文本域
3.查询数据库拿到考生信息，放到一个List集合中
4.以4为单位进行循环，分别找对应的准考证模板，进行数据填充，特别注意的是每次都要根据个数找到对应的模板进行填充
5.每次生成一个PDF文件，记录文件名
6.最后进行文件的合并。。
7.用到的插件 itextsharp，大家抖动
8.核心代码。。
1.传递考生信息进去，返回需要填充的数据。。。（这个地方，我创建的模板上 命名规则都是统一的，第一个准考证序号是 name1,第二个是name2....以此类推）
public Dictionary<string, string> ReadForm(List<ExamInfoEntity> list)
{
string pdfTemplate = string.Empty;
string baseTemplatePath = @"D:\wangmj\fileserver\pdftemplate";
if (CheckUtil.CheckList(list))//根据传递集合元素个数,对应不同的PDF模板文件
{
pdfTemplate = Path.Combine(baseTemplatePath, "zkztemplate" + list.Count + ".pdf");
}
Dictionary<string, string> dic = new Dictionary<string, string>();
string basePath = ConfigurationManager.AppSettings["picpath"];// @"D:\Program Files (x86)\Apache Software Foundation\Tomcat 7.0\webapps\pichouse\pic\pfile";
PdfReader pdfReader = null;
try
{
pdfReader = new PdfReader(pdfTemplate);
AcroFields pdfFormFields = pdfReader.AcroFields;
string name = string.Empty;//姓名
string zkzh = string.Empty;//准考证号
string kaochang = string.Empty;//考场
string zhiyegongzhong = string.Empty;
string jinengdengji = string.Empty;
string zuoweihao = string.Empty;
string identify = string.Empty;
string workunit = string.Empty;
string kstime = string.Empty;
string ksaddress = string.Empty;
string Image = string.Empty;
string photopath = string.Empty;
for (int i = 0; i < list.Count; ++i)
{
//
name = string.Format("表单1[0].#subform[0].name{0}[0]", i + 1);
zkzh = string.Format("表单1[0].#subform[0].zkzh{0}[0]", i + 1);
kaochang = string.Format("表单1[0].#subform[0].kaochang{0}[0]", i + 1);
zhiyegongzhong = string.Format("表单1[0].#subform[0].zhiyegongzhong{0}[0]", i + 1);
jinengdengji = string.Format("表单1[0].#subform[0].jinengdengji{0}[0]", i + 1);
zuoweihao = string.Format("表单1[0].#subform[0].zuoweihao{0}[0]", i + 1);
identify = string.Format("表单1[0].#subform[0].identify{0}[0]", i + 1);
workunit = string.Format("表单1[0].#subform[0].workunit{0}[0]", i + 1);
kstime = string.Format("表单1[0].#subform[0].kstime{0}[0]", i + 1);
ksaddress = string.Format("表单1[0].#subform[0].ksaddress{0}[0]", i + 1);
Image = string.Format("表单1[0].#subform[0].Image{0}[0]", i + 1);
dic.Add(name, list[i].name);
dic.Add(zkzh, list[i].zkzh);
dic.Add(kaochang, list[i].kaochang);
dic.Add(zhiyegongzhong, list[i].zhiyegongzhong);
dic.Add(jinengdengji, list[i].jinengdengji);
dic.Add(zuoweihao, list[i].seat);
dic.Add(identify, list[i].identify);
dic.Add(workunit, list[i].workunit);
dic.Add(kstime, list[i].kstime);
dic.Add(ksaddress, list[i].ksaddress);
photopath = Path.Combine(basePath, list[i].photo);
dic.Add(Image, photopath);
}
}
catch (Exception ex)
{
//LogHelper.Error(ex.Message);
}
finally
{
if (pdfReader != null)
{
pdfReader.Close();
}
}
return dic;
}
2.填充pdf模板。。
/// <summary>
/// 填充模板
/// </summary>
/// <param name="pdfTemplate">pdf模板的全路径</param>
/// <param name="newFile">生成的pdf路径</param>
/// <param name="dic"></param>
public static void FillForm(string pdfTemplate, string newFile, Dictionary<string, string> dic)
{
PdfReader pdfReader = null;
PdfStamper pdfStamper = null;
try
{
pdfReader = new PdfReader(pdfTemplate);
pdfStamper = new PdfStamper(pdfReader, new FileStream(
newFile, FileMode.Create));
AcroFields pdfFormFields = pdfStamper.AcroFields;
//设置支持中文字体
BaseFont baseFont = BaseFont.CreateFont("C:\\WINDOWS\\FONTS\\STSONG.TTF", BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
pdfFormFields.AddSubstitutionFont(baseFont);
foreach (KeyValuePair<string, string> de in dic)
{
if (de.Key.Contains("Image"))
{
insertImage(pdfStamper, pdfFormFields, de.Key, de.Value);
}
else
{
pdfFormFields.SetField(de.Key, de.Value);
}
}
pdfStamper.FormFlattening = true;
}
catch (Exception ex)
{
//LogHelper.Error(ex.Message);
}
finally
{
if (pdfStamper != null)
{
pdfStamper.Close();
}
if (pdfReader != null)
{
pdfReader.Close();
}
}
}
3.填充图片的方法
/// <summary>
/// 填充图片
/// </summary>
/// <param name="ps"></param>
/// <param name="s">域集合？</param>
/// <param name="filedname">图片域的名称</param>
public static void insertImage(PdfStamper ps, AcroFields s, string filedname, string imagefilename)
{
try
{
List<AcroFields.FieldPosition> list = (List<AcroFields.FieldPosition>)s.GetFieldPositions(filedname);
Rectangle signRect = list[0].position;
Image image = Image.GetInstance(imagefilename);
PushbuttonField pushbuttonField = s.GetNewPushbuttonFromField(filedname);
pushbuttonField.Image = (image);
PdfFormField editFormField = pushbuttonField.Field;
s.ReplacePushbuttonField(filedname, editFormField);
}
catch (Exception e)
{
// TODO Auto-generated catch block
}
}
合并PDF文件的方法
private string MergePDF(List<string> list)
{
string basePath = @"D:\fileserver\pdfzkz";
string save_path = Path.Combine(basePath, "准考证.pdf");
Document document = new Document();
PdfWriter writer = PdfWriter.GetInstance(document, new FileStream(save_path, FileMode.Create));
document.Open();
PdfContentByte cb = writer.DirectContent;
PdfImportedPage newPage;
PdfReader readert = null;
List<PdfReader> readerList = new List<PdfReader>();
for (int k = 0; k < list.Count; k++)
{
readert = new PdfReader(list[k]);
document.NewPage();
int iPageNum = readert.NumberOfPages;
for (int j = 1; j <= iPageNum; j++)
{
document.NewPage();
newPage = writer.GetImportedPage(readert, j);
cb.AddTemplate(newPage, 0, 0);
}
readerList.Add(readert);
}
try
{
if (document.IsOpen())
{
document.Close();
}
foreach (var rd in readerList)//清理占用
{
rd.Dispose();
}
}
catch(Exception ex)
{
}
return save_path;
}
