原创|产品更新|编辑:李显亮|2020-12-31 10:05:23.740|阅读 473 次
概述:Spire.PDF的.NET和java版均已迎来12月的更新,本文是更新详情。
# 界面/图表报表/文档/IDE等千款热门软控件火热销售中 >>
Spire.PDF是专业的PDF API,适用于创建,编写,编辑,处理和读取PDF文件,且无需安装Adobe Acrobat。11月常规更新已发布,下面是具体的更新情况。
Spire.PDF for .NET更新至v6.12.20,该版本支持通过外部服务进行数字签名并且支持设置PDF包中文件的字段并对文件进行排序。此外还增强了PDF转换到PDF/A 和PDF/A -3b的功能,以及修复了在查找文本中出现的问题。
新功能
void Sign()
{
PdfDocument doc = new PdfDocument();
doc.LoadFromFile(inputPath);
//Load the certificate
X509Certificate2 cert = new X509Certificate2(certPath, passwd);
CustomPKCS7SignatureFormatter customPKCS7SignatureFormatter = new CustomPKCS7SignatureFormatter(cert);
PdfSignature signature = new PdfSignature(doc, doc.Pages[0], customPKCS7SignatureFormatter, "signature0");
signature.Bounds = new RectangleF(new PointF(90, 550), new SizeF(270, 90));
//Set the dispay mode of graphics, if not set any, the default one will be applied
signature.GraphicsMode = GraphicMode.SignDetail;
signature.NameLabel = "Signer:";
signature.Name = "gary";
signature.ContactInfoLabel = "ContactInfo:";
signature.DateLabel = "Date:";
signature.Date = DateTime.Now;
signature.LocationInfoLabel = "Location:";
signature.LocationInfo = "Chengdu";
signature.ReasonLabel = "Reason: ";
signature.Reason = "The certificate of this document";
signature.DistinguishedNameLabel = "DN: ";
signature.DocumentPermissions = PdfCertificationFlags.AllowFormFill | PdfCertificationFlags.ForbidChanges;
signature.SignDetailsFont = new PdfFont(PdfFontFamily.TimesRoman, 10f);
signature.SignNameFont = new PdfFont(PdfFontFamily.Courier, 15);
signature.SignImageLayout = SignImageLayout.None;
//Save pdf file.
doc.SaveToFile(outputPath, Spire.Pdf.FileFormat.PDF);
}
class CustomPKCS7SignatureFormatter : IPdfSignatureFormatter
{
////// If encapsulate is true, a copy of the message will be included in the signature.
///private bool m_encapsulate = true;
////// The signing certificate.
///private X509Certificate2 m_certificate = null;
public Dictionary m_parameters = new Dictionary();
////// Parameters for the encoding of the signature.
/// 1.Key:Filter,String
/// Required
/// The name of the preferred signature handler to use when validating this signature.
/// 2.SubFilter,String
/// Required
/// A name that describes the encoding of the signature value.
/// PDF 1.6 defines the following values for public-key cryptographic signatures: adbe.x509.rsa_sha1, adbe.pkcs7.detached, and adbe.pkcs7.sha1
/// 3.Cert,X509Certificate2
/// Required when SubFilter is adbe.x509.rsa_sha1
///public Dictionary Parameters
{
get
{ return m_parameters; }
}
////// Construct a new instance.
//////The signing certificate.////// If encapsulate is true, a copy of the message will be included in the signature.
///public CustomPKCS7SignatureFormatter(X509Certificate2 certificate)
{
if (null == certificate)
{ throw new ArgumentNullException("certificate"); }
m_certificate = certificate;
Parameters.Add("Filter", "Adobe.PPKMS");
Parameters.Add("SubFilter", m_encapsulate ? "adbe.pkcs7.sha1" : "adbe.pkcs7.detached");
}
////// Sign.
//////The data that contains signature content.///The signaturepublic byte[] Sign(byte[] content)
{
CmsSigner cmsSigner = new CmsSigner(m_certificate);
SHA1 sha1 = SHA1.Create();
SignedCms signedCms = new SignedCms(new ContentInfo(m_encapsulate ? sha1.ComputeHash(content) : content), !m_encapsulate);
signedCms.ComputeSignature(cmsSigner, true);
byte[] result = signedCms.Encode();
return result;
}
}
string[] files = Directory.GetFiles(@"files");
string inputFile = @"input.pdf";
string outputFile = @"result.pdf";
using (PdfDocument doc = new PdfDocument(inputFile))
{
//添加字段
doc.Collection.AddCustomField("No", "序号", Spire.Pdf.Collections.CustomFieldType.NumberField);
doc.Collection.AddFileRelatedField("FileName", "文件名称", Spire.Pdf.Collections.FileRelatedFieldType.FileName);
doc.Collection.AddFileRelatedField("Desc", "文件描述", Spire.Pdf.Collections.FileRelatedFieldType.Desc);
doc.Collection.AddFileRelatedField("CreateDate", "创建时间", Spire.Pdf.Collections.FileRelatedFieldType.CreationDate);
doc.Collection.AddFileRelatedField("ModDate", "修改时间", Spire.Pdf.Collections.FileRelatedFieldType.ModDate);
doc.Collection.AddFileRelatedField("FileSize", "文件大小", Spire.Pdf.Collections.FileRelatedFieldType.Size);
doc.Collection.AddCustomField("FileType", "文件类型", Spire.Pdf.Collections.CustomFieldType.TextField);
doc.Collection.AddCustomField("FileDate", "自定义时间", Spire.Pdf.Collections.CustomFieldType.DateField);
//根据字段对附件排序
doc.Collection.Sort(new string[] { "No", "fileName", "Desc", "CreateDate", "ModDate", "FileSize", "FileType", "FileDate" }, new bool[] { false, true, true, true, true, true, true, true });
for (int i = 0; i < files.Length; i++) { PdfAttachment attachment = new PdfAttachment(files[i]); doc.Collection.AddAttachment(attachment); } int n = 1; //设置字段值 foreach (PdfAttachment att in doc.Collection.AssociatedFiles) { att.SetFieldValue("No", n); att.Description = n + "文件描述"; att.SetFieldValue("FileDate", DateTime.Today); att.SetFieldValue("FileType", n + "文件"); n++; } doc.SaveToFile(outputFile, FileFormat.PDF); doc.Dispose(); }
PdfDocument doc = new PdfDocument(); doc.LoadFromFile(inputPath); PdfAttachment attachment = new PdfAttachment(attachmentPath); doc.Attachments.Add(attachment,doc,Spire.Pdf.General.PdfAttachmentRelationship.Alternative); doc.SaveToFile(outputPath);
PdfDocument pdf = new PdfDocument();
pdf.LoadFromFile(inputFile, FileFormat.PDF);
RectangleF rctg = new RectangleF(0, 0, 200, 100);
PdfTextFindCollection findCollection = pdf.Pages[0].FindText(rctg, "DEPOSIT", TextFindParameter.WholeWord);
PdfTextFindCollection findCollectionOut = pdf.Pages[0].FindText(rctg, "agreement", TextFindParameter.WholeWord);
foreach (PdfTextFind find in findCollection.Finds)
{ find.ApplyHighLight(Color.Green); }
foreach (PdfTextFind findOut in findCollectionOut.Finds)
{ findOut.ApplyHighLight(Color.Yellow); }
pdf.SaveToFile(outputFile, FileFormat.PDF);
Bug修复
Spire.PDF for Java更新至v3.12.6,该版本支持了转换PDF到TIFF,改善了doc.getPages().get(0).isBlank()方法逻辑,实现了提取PDF文本按照段落断行以及读取和写入XMP元数据的功能。此外,该版本还增强了转换PDF到Image/Excel/Word的功能。
新功能
PdfDocument pdf=new PdfDocument();
pdf.loadFromFile("C:/Test.pdf");
pdf.saveToTiff("C:/1.tiff");
pdf.saveToTiff("C:/2.tiff",1,2,TiffCompressionTypes.DEFAULT);
PdfDocument doc = new PdfDocument();
// 加载PDF文档
doc.loadFromFile(InputPath);
doc.getConvertOptions().setKeepParagraph(true);
File file = new File(OutputPath);
file.createNewFile();
FileWriter fw = new FileWriter(file, true);
BufferedWriter bw = new BufferedWriter(fw);
StringBuilder builder = new StringBuilder();
PdfPageBase pageBase;
for (int i = 0; i < doc.getPages().getCount(); i++) { pageBase = doc.getPages().get(i); builder.append(pageBase.extractText(false) + "\r\n"); } bw.write(builder.toString()); bw.flush(); bw.close(); fw.close(); doc.close();
PdfDocument pdf=new PdfDocument();
pdf.loadFromFile("C:/test.pdf");
//Get Xmp meta data
String lcXml = pdf.getXmpMetaData().getXmlString();
PdfDocument newDoc=new PdfDocument();
newDoc.getPages().add();
//Write Xmp meta data to PDF
newDoc.getXmpMetaData().load(lcXml);
newDoc.saveToFile("C:/new.pdf");
Bug修复
本站文章除注明转载外,均为本站原创或翻译。欢迎任何形式的转载,但请务必注明出处、不得修改原文相关链接,如果存在内容上的异议请邮件反馈至chenjj@ke049m.cn