我的印象是现在可以使用PdfCopy复制AcroFields。在release notes for iText 5.4.4.0中，现在尽可能列出。但是，当我尝试这样做时，它会出现所有注释（我认为我正确地使用了这个术语，对于iText来说仍然相当新......）因为这些字段被删除了。看起来字段就在那里（意思是我可以看到指示可编辑字段的蓝色框），但它们不可编辑。如果我尝试在Acrobat中提交PDF，我会收到一条消息，说“没有字段，你想让Acrobat发现它们吗？”并且大多数都被找到并标记并且字段正确（复选框不是，但文本字段是）。
我假设在某些地方有一个额外的步骤来重新添加注释到PdfCopy对象，但我没有看到从PdfReader获取注释的方法。我似乎也找不到任何关于如何做到这一点的文档（因为AcfFields在PdfCopy中长期不受支持，因此我找到的大部分内容都是这样的）。
由于敏感性，我无法提供相关PDF的副本，但使用之前使用的测试程序的更改版本，您可以通过以下代码查看问题。它应该生成一个表，其中包含右侧四列中的一些复选框。如果我在MergePdfs方法中使用与PdfCopyFields完全相同的代码而不是PdfCopy，它将按预期工作。此代码不会生成任何文本字段，但在我的主项目中，它们是用作模板的原始父PDF的一部分。
（对不起，很长一例，它是从一个更大的应用程序中挑选出来的。你需要一个带有名为“TableStartPosition”的字段的PDF，并使用正确的路径更新RunTest以获得本地机器工作。）
PdfCopy功能还没有进入iTextSharp吗？我使用的是5.4.5.0版本。
class Program
{
Stream _pdfTemplateStream;
MemoryStream _pdfResultStream;
PdfReader _pdfTemplateReader;
PdfStamper _pdfResultStamper;
static void Main(string[] args)
{
Program p = new Program();
try
{
p.RunTest();
}
catch (Exception f)
{
Console.WriteLine(f.Message);
Console.ReadLine();
}
}
internal void RunTest()
{
FileStream fs = File.OpenRead(@"C:\temp\a\RenameFieldTest\RenameFieldTest\Library\CoverPage.pdf");
_pdfTemplateStream = fs;
_pdfResultStream = new MemoryStream();
//PDFTemplateStream = new FileStream(_templatePath, FileMode.Open);
_pdfTemplateReader = new PdfReader(_pdfTemplateStream);
_pdfResultStamper = new PdfStamper(_pdfTemplateReader, _pdfResultStream);
#region setup objects
List<CustomCategory> Categories = new List<CustomCategory>();
CustomCategory c1 = new CustomCategory();
c1.CategorySizesInUse.Add(CustomCategory.AvailableSizes[1]);
c1.CategorySizesInUse.Add(CustomCategory.AvailableSizes[2]);
Categories.Add(c1);
CustomCategory c2 = new CustomCategory();
c2.CategorySizesInUse.Add(CustomCategory.AvailableSizes[0]);
c2.CategorySizesInUse.Add(CustomCategory.AvailableSizes[1]);
Categories.Add(c2);
List<CustomObject> Items = new List<CustomObject>();
CustomObject co1 = new CustomObject();
co1.Category = c1;
co1.Title = "Object 1";
Items.Add(co1);
CustomObject co2 = new CustomObject();
co2.Category = c2;
co2.Title = "Object 2";
Items.Add(co2);
#endregion
FillCoverPage(Items);
_pdfResultStamper.Close();
_pdfTemplateReader.Close();
List<MemoryStream> pdfStreams = new List<MemoryStream>();
pdfStreams.Add(new MemoryStream(_pdfResultStream.ToArray()));
MergePdfs(@"C:\temp\a\RenameFieldTest\RenameFieldTest\Library\Outfile.pdf", pdfStreams);
_pdfResultStream.Dispose();
_pdfTemplateStream.Dispose();
}
internal void FillCoverPage(List<CustomObject> Items)
{
//Before we start we need to figure out where to start adding the table
var fieldPositions = _pdfResultStamper.AcroFields.GetFieldPositions("TableStartPosition");
if (fieldPositions == null)
{ throw new Exception("Could not find the TableStartPosition field. Unable to determine point of origin for the table!"); }
_pdfResultStamper.AcroFields.RemoveField("TableStartPosition");
var fieldPosition = fieldPositions[0];
// Get the position of the field
var targetPosition = fieldPosition.position;
//First, get all the available card sizes
List<string> availableSizes = CustomCategory.AvailableSizes;
//Generate a table with the number of available card sizes + 1 for the device name
PdfPTable table = new PdfPTable(availableSizes.Count + 1);
float[] columnWidth = new float[availableSizes.Count + 1];
for (int y = 0; y < columnWidth.Length; y++)
{
if (y == 0)
{ columnWidth[y] = 320; }
else
{ columnWidth[y] = 120; }
}
table.SetTotalWidth(columnWidth);
table.WidthPercentage = 100;
PdfContentByte canvas;
List<PdfFormField> checkboxes = new List<PdfFormField>();
//Build the header row
table.Rows.Add(new PdfPRow(this.GetTableHeaderRow(availableSizes)));
//Insert the global check boxes
PdfPCell[] globalRow = new PdfPCell[availableSizes.Count + 1];
Phrase tPhrase = new Phrase("Select/Unselect All");
PdfPCell tCell = new PdfPCell();
tCell.BackgroundColor = BaseColor.LIGHT_GRAY;
tCell.AddElement(tPhrase);
globalRow[0] = tCell;
for (int x = 0; x < availableSizes.Count; x++)
{
tCell = new PdfPCell();
tCell.BackgroundColor = BaseColor.LIGHT_GRAY;
PdfFormField f = PdfFormField.CreateCheckBox(_pdfResultStamper.Writer);
string fieldName = string.Format("InkSaver.Global.chk{0}", availableSizes[x].Replace(".", ""));
//f.FieldName = fieldName;
string js = string.Format("hideAll(event.target, '{0}');", availableSizes[x].Replace(".", ""));
f.Action = PdfAction.JavaScript(js, _pdfResultStamper.Writer);
tCell.CellEvent = new ChildFieldEvent(_pdfResultStamper.Writer, f, fieldName);
globalRow[x + 1] = tCell;
checkboxes.Add(f);
}
table.Rows.Add(new PdfPRow(globalRow));
int status = 0;
int pageNum = 1;
for (int itemIndex = 0; itemIndex < Items.Count; itemIndex++)
{
tCell = new PdfPCell();
Phrase p = new Phrase(Items[itemIndex].Title);
tCell.AddElement(p);
tCell.HorizontalAlignment = Element.ALIGN_LEFT;
PdfPCell[] cells = new PdfPCell[availableSizes.Count + 1];
cells[0] = tCell;
for (int availCardSizeIndex = 0; availCardSizeIndex < availableSizes.Count; availCardSizeIndex++)
{
if (Items[itemIndex].Category.CategorySizesInUse.Contains(availableSizes[availCardSizeIndex]))
{
string str = availableSizes[availCardSizeIndex];
tCell = new PdfPCell();
tCell.PaddingLeft = 10f;
tCell.PaddingRight = 10f;
cells[availCardSizeIndex + 1] = tCell;
cells[availCardSizeIndex].HorizontalAlignment = Element.ALIGN_CENTER;
PdfFormField f = PdfFormField.CreateCheckBox(_pdfResultStamper.Writer);
string fieldName = string.Format("InkSaver.chk{0}.{1}", availableSizes[availCardSizeIndex].Replace(".", ""), itemIndex + 1);
//f.FieldName = fieldName; <-- This causes the checkbox to be double-named (i.e. InkSaver.Global.chk0.InkSaver.Global.chk0
string js = string.Format("hideCardSize(event.target, {0}, '{1}');", itemIndex + 1, availableSizes[availCardSizeIndex]);
f.Action = PdfAction.JavaScript(js, _pdfResultStamper.Writer);
tCell.CellEvent = new ChildFieldEvent(_pdfResultStamper.Writer, f, fieldName);
checkboxes.Add(f);
}
else
{
//Add a blank cell
tCell = new PdfPCell();
cells[availCardSizeIndex + 1] = tCell;
}
}
//Test if the column text will fit
table.Rows.Add(new PdfPRow(cells));
canvas = _pdfResultStamper.GetUnderContent(pageNum);
ColumnText ct2 = new ColumnText(canvas);
ct2.AddElement(new PdfPTable(table));
ct2.Alignment = Element.ALIGN_LEFT;
ct2.SetSimpleColumn(targetPosition.Left, 0, targetPosition.Right, targetPosition.Top, 0, 0);
status = ct2.Go(true);
if ((status != ColumnText.NO_MORE_TEXT) || (itemIndex == (Items.Count - 1)))
{
ColumnText ct3 = new ColumnText(canvas);
ct3.AddElement(table);
ct3.Alignment = Element.ALIGN_LEFT;
ct3.SetSimpleColumn(targetPosition.Left, 0, targetPosition.Right, targetPosition.Top, 0, 0);
ct3.Go();
foreach (PdfFormField f in checkboxes)
{
_pdfResultStamper.AddAnnotation(f, pageNum);
}
checkboxes.Clear();
if (itemIndex < (Items.Count - 1))
{
pageNum++;
_pdfResultStamper.InsertPage(pageNum, _pdfTemplateReader.GetPageSize(1));
table = new PdfPTable(availableSizes.Count + 1);
table.SetTotalWidth(columnWidth);
table.WidthPercentage = 100;
table.Rows.Add(new PdfPRow(this.GetTableHeaderRow(availableSizes)));
}
}
}
}
private PdfPCell[] GetTableHeaderRow(List<string> AvailableSizes)
{
PdfPCell[] sizeHeaders = new PdfPCell[AvailableSizes.Count + 1];
Phrase devName = new Phrase("Device Name");
PdfPCell deviceHeader = new PdfPCell(devName);
deviceHeader.HorizontalAlignment = Element.ALIGN_CENTER;
deviceHeader.BackgroundColor = BaseColor.GRAY;
sizeHeaders[0] = deviceHeader;
for (int x = 0; x < AvailableSizes.Count; x++)
{
PdfPCell hCell = new PdfPCell(new Phrase(AvailableSizes[x]));
hCell.HorizontalAlignment = Element.ALIGN_CENTER;
hCell.BackgroundColor = BaseColor.GRAY;
sizeHeaders[x + 1] = hCell;
}
return sizeHeaders;
}
public void MergePdfs(string filePath, List<MemoryStream> pdfStreams)
{
//Create output stream
FileStream outStream = new FileStream(filePath, FileMode.Create);
Document document = null;
if (pdfStreams.Count > 0)
{
try
{
int PageCounter = 0;
//Create Main reader
PdfReader reader = new PdfReader(pdfStreams[0]);
PageCounter = reader.NumberOfPages;//This is if we have multiple pages in the cover page, we need to adjust the offset.
//rename fields in the PDF. This is required because PDF's cannot have more than one field with the same name
RenameFields(reader, PageCounter++);
//Create Main Doc
document = new Document(reader.GetPageSizeWithRotation(1));
//Create main writer
PdfCopy Writer = new PdfCopy(document, outStream);
//PdfCopyFields Writer = new PdfCopyFields(outStream);
//Open document for writing
document.Open();
////Add pages
Writer.AddDocument(reader);
//For each additional pdf after first combine them into main document
foreach (var PdfStream in pdfStreams.Skip(1))
{
PdfReader reader2 = new PdfReader(PdfStream);
//rename PDF fields
RenameFields(reader2, PageCounter++);
// Add content
Writer.AddDocument(reader);
}
//Writer.AddJavaScript(PostProcessing.GetSuperscriptJavaScript());
Writer.Close();
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
finally
{
if (document != null)
document.Close();
foreach (var Strm in pdfStreams)
{
try { if (null != Strm) Strm.Dispose(); }
catch { }
}
//pdfStamper.Close();
outStream.Close();
}
}
}
private void RenameFields(PdfReader reader, int PageNum)
{
int tempPageNum = 1;
//rename all fields
foreach (string field in reader.AcroFields.Fields.Keys)
{
if (((reader.AcroFields.GetFieldType(field) == 1) || (reader.AcroFields.GetFieldType(field) == 2)) && (field.StartsWith("InkSaver")))
{
//This is a InkSaver button, set the name so its subclassed
string classPath;
if (reader.AcroFields.GetFieldType(field) == 2)
{
classPath = field.Substring(0, field.LastIndexOf("."));
if (field.StartsWith("InkSaver.chk"))
{
int a = field.LastIndexOf(".");
string sub = field.Substring(a + 1, (field.Length - a - 1));
int pageNum = int.Parse(sub);
int realPageNum = pageNum + tempPageNum;//PostProcessing.Instance.CoverPageLength;
PageNum = realPageNum;
}
}
else
{
classPath = field.Substring(0, field.LastIndexOf("."));
}
string newID = classPath + ".page" + PageNum.ToString();
bool ret = reader.AcroFields.RenameField(field, newID);
}
else
{
reader.AcroFields.RenameField(field, field + "_" + PageNum.ToString());// field + Guid.NewGuid().ToString("N"));
}
}
}
}
public class ChildFieldEvent : IPdfPCellEvent
{
protected PdfWriter writer;
protected PdfFormField parent;
protected string checkBoxName;
internal ChildFieldEvent(PdfWriter writer, PdfFormField parent, string CheckBoxName)
{
this.writer = writer;
this.parent = parent;
this.checkBoxName = CheckBoxName;
}
public void CellLayout(PdfPCell cell, Rectangle rect, PdfContentByte[] cb)
{
createCheckboxField(rect);
}
private void createCheckboxField(Rectangle rect)
{
RadioCheckField bt = new RadioCheckField(this.writer, rect, this.checkBoxName, "Yes");
bt.CheckType = RadioCheckField.TYPE_SQUARE;
bt.Checked = true;
this.parent.AddKid(bt.CheckField);
}
}
internal class CustomCategory
{
internal static List<string> AvailableSizes
{
get
{
List<string> retVal = new List<string>();
retVal.Add("1");
retVal.Add("2");
retVal.Add("3");
retVal.Add("4");
return retVal;
}
}
internal CustomCategory()
{
CategorySizesInUse = new List<string>();
}
internal List<string> CategorySizesInUse { get; set; }
}
internal class CustomObject
{
internal string Title { get; set; }
internal CustomCategory Category { get;set; }
}
答案 0 :(得分：0)
请查看MergeForms示例。你的例子对我来说太长了，但乍一看，我错过了以下几行：
copy.setMergeFields();
顺便说一句，在MergeForms2中，在合并表单之前也会重命名字段。