Aspose.Words是一款先进的Word文档处理控件，在不使用Microsoft Words的情况下，它可以使用户在各个应用程序中执行各种文档处理任务，其中包括文档的生成、修改、渲染、打印，文档格式转换和邮件合并等文档处理。此外，Aspose.Words支持DOC，OOXML，RTF，HTML，OpenDocument, PDF, XPS, EPUB和其他格式

Aspose.Words 15.4版本修复了许多以前的和增强了很多文本处理的功能，具体如下：

• 增强了图形内的MathM方程式的渲染；
• 增强了MathML方程式渲染过程中的垂直定位；
• 增强对 Mac 2011文档MS Word 的Iso29500的支持；
• 增强了页数计算，脚注平衡，嵌套的浮动表格和图片四周文字环绕等功能；
• 增强了EMF和WMF渲染；
• HTML保存选项和图形/绘图添加了一些新的 public members；
• DocumentBuilder, TXT, ODT以及Microsoft Word文档格式有超过30项改进；

修复了的如下：

• WORDSNET-10212 /negative page margins/ Header paragraph border is lost after conversion from Doc to PDF 
• WORDSNET-10275 A blank page is rendered in PDF 
• WORDSNET-10477 Images are not preserved during exporting to MHTML 
• WORDSNET-10521 Image border disappear after saving Docx to Doc/Pdf 
• WORDSNET-10952 DrawingML contents are missing after conversion from Docx to Pdf 
• WORDSNET-11039 Extra paragraph mark is inserted at the bottom of the footer upon document save 
• WORDSNET-11162 Table's border is lost after conversion from ODT to Docx 
• WORDSNET-11230 Field.Remove does not remove the mail merge field 
• WORDSNET-11350 Text wraps around empty space while converting Doc to Pdf 
• WORDSNET-11351 Document protection issue with Microsoft Word for Mac 2011 
• WORDSNET-11389 Table's border width does not import into Aspose.Words DOM 
• WORDSNET-11467 Paragraph with big left indentation value is rendering incorrectly in PDF 
• WORDSNET-11468 Page breaks are not preserved in PDF 
• WORDSNET-11471 Aspose.Words produces empty documents 
• WORDSNET-11565 Shape is missing after merging one document into another 
• WORDSNET-11612 Docx to Pdf causes 100% memory usage 
• WORDSNET-11617 Color of brush in Wmf is wrong. 
• WORDSNET-11630 Doc to Pdf conversion issue with bullet position 
• WORDSNET-11632 Text gets blurred during rendering to HtmlFixed 
• WORDSNET-11647 CARDTEXT swtich does not work for Dutch language 
• WORDSNET-11654 PrintDate value is changed after conversion from RTF to PDF 
• WORDSNET-11656 Image is missing after conversion from Docx to Pdf/Docx 
• WORDSNET-11668 STYLEREF produces error message in PDF 
• WORDSNET-11676 Tables are pushed to following pages during open/save an ODT 
• WORDSNET-11677 Document.AcceptAllRevisions deletes the footer in the document 
• WORDSNET-11685 Contents move to next page after conversion from Doc to Pdf 
• WORDSNET-11690 Word REF fields are incorrectly updated 
• WORDSNET-11695 Track Revisions set incorrect author name 
• WORDSNET-11697 Table row headings are missing after converting RTF to Tiff/Rtf 
• WORDSNET-11699 Table position is changed after converting RTF to Tiff/Rtf. 
• WORDSNET-11700 Contents are missing after converting RTF to Tiff/Rtf 
• WORDSNET-11702 'A generic error occurred in GDI+' occurs when converting DOCX to PDF 
• WORDSNET-11707 Bullet numbers are changed after re-saving Doc 
• WORDSNET-11708 Paragraph moves to previous page after conversion from Docx to Pdf 
• WORDSNET-11714 Displayed date format in chart is not the same as in the docx file 
• WORDSNET-11716 Missing MERGEFIELD in Conditional, Works in Word, Not In Aspose.Words 
• WORDSNET-11718 Strange \* MERGEFORMAT text appears in front of equations in PDF 
• WORDSNET-11719 Equations are rendered higher than the text on the same line. I.e. baselines do not match. 
• WORDSNET-11724 WORDSNET-11511 was not fixed in v15.3.0 
• WORDSNET-11725 Missing images on word to HTML conversion 
• WORDSNET-11727 EMF image big differnce after docx saved to pdf 
• WORDSNET-11734 fldLock="on" attribute is removed from document after re-saving WordML 
• WORDSNET-11739 PageSetup.DifferentFirstPageHeaderFooter value is lost after re-saving Doc 
• WORDSNET-11747 Aspose.Words ignore Thai fonts while saving html/txt to Pdf or Docx 
• WORDSNET-11748 Dr3DFaceComparer violates transitivity rule 
• WORDSNET-11751 First page header content is not preserved during open/save a 
• WORDSNET-11756 Header on second page is missing in PDF 
• WORDSNET-4286 Page layout of rendered PDF differs from original document 
• WORDSNET-5020 Field Codes not parsed correctly when leading quotes or paragraph end markers present 
• WORDSNET-5249 /printer metrics/ Text is wrapped incorrectly during rendering. 
• WORDSNET-5762 PAGE field, GroupShape inside Primary Footer becomes invisible after processing 
• WORDSNET-5895 Image squashed, while converting Word document to Pdf 
• WORDSNET-7547 Paragraph's embedded style applied to table cell's text without "p" tag. 
• WORDSNET-7637 /printer metrics/ Some text is moved to the previous page upon rendering 
• WORDSNET-8046 /printer metrics/ Content is rendering on the previous page in Pdf 
• WORDSNET-8047 /printer metrics/ Indent of some list lines are not exported correctly to fixed page formats 
• WORDSNET-8087 DocumentBuilder.Font.ClearFormatting do not reset to default font formatting 
• WORDSNET-8377 Document.AcceptAllRevisions add empty Paragraph in output Docx 
• WORDSNET-9394 Implement Bevel effect // Simple Frame style applied on a DrawingML is not preserved when rendering 
• WORDSNET-9398 A GUID text value is added at the end of a SDT during rendering to fixed page formats 
• WORDSNET-10029 Nested number sequence of lists is wrong in HTML Enhancement
• WORDSNET-10718 DocumentBuilder.InsertImage does not mimics the MS Word behavior Enhancement
• WORDSNET-11458 Document.Save generates huge size html for Odt Enhancement
• WORDSNET-11538 Images are very small after HTML to DOCX Enhancement
• WORDSNET-11547 /w:legacySpace/ Toc field does not render correctly in output Pdf Enhancement
• WORDSNET-11554 Extra space between numbers and text after RTF to HTML to RTF Enhancement
• WORDSNET-11585 Barcode text is misplaced after DOC to PDF Enhancement
• WORDSNET-11639 Incorrect default font color of tables when importing an HTML document in Quirks mode Enhancement
• WORDSNET-11645 Vertical alignment of table cells is not preserved during HTML-DOCX-HTML round trip Enhancement
• WORDSNET-11671 DrawingML shape that simultaneously has 3D effect, Outer shadow and Reflection is rendered a bit incorrectly Enhancement
• WORDSNET-11679 Text in the left most column in a table is cut in PDF Enhancement
• WORDSNET-11726 A picture overlaps Table in HtmlFixed Enhancement
• WORDSNET-11730 System.IndexOutOfRangeException is thrown while saving docx to pdf Enhancement
• WORDSNET-2058 ParagraphBreakFont should be the same as DocumentBuilder.Font, when use builder.Writeln. Enhancement
• WORDSNET-2284 Shape name is always empty Enhancement
• WORDSNET-3443 Picture switch does not work if there is “Text Before”. Enhancement
• WORDSNET-4926 /footnote balancing/ Number of pages is incorrect after rendering. Enhancement
• WORDSNET-6286 Add a way to distinguish signature line shapes in the API Enhancement
• WORDSNET-9612 Export Revision's metadata to Html Enhancement
• WORDSNET-10704 Aspose.Words throws a TypeInitializationException when it is merged into the calling assembly Exception
• WORDSNET-11318 NodeImporter.ImportNode throws ArgumentException when importing section Exception
• WORDSNET-11470 StackOverflowException encountered during mail merge process Exception
• WORDSNET-11473 Aspose.Words.FileCorruptedException occurs when loading an ODT file Exception
• WORDSNET-11638 DOCX to PDF throws Object reference not set to an instance of an object Exception
• WORDSNET-11653 System.ArgumentException occurs during rendering to PostScript format Exception
• WORDSNET-11657 System.IndexOutOfRangeException is thrown while saving RTF to HTML Exception
• WORDSNET-11705 DocumentBuilder.InsertHtml throws System.InvalidOperationException Exception
• WORDSNET-11713 PdfDigitalSignatureDetails constructor throws System.Security.Cryptography.CryptographicException Exception
• WORDSNET-11720 System.ArgumentException occurs during rendering to PostScript format Exception
• WORDSNET-11721 System.ArgumentException occurs during rendering to PostScript format Exception
• WORDSNET-11722 System.ArgumentException occurs during rendering to PostScript format Exception
• WORDSNET-11723 System.ArgumentException occurs during rendering to PostScript format Exception
• WORDSNET-10932 Add feature to specify a suffix for CSS rules in style.css when document is exported to HtmlFixed Feature
• WORDSNET-10965 /equation alignment/ Equations do not render correctly in Pdf Feature
• WORDSNET-11457 Add feature to export linked image URL for exported image Feature
• WORDSNET-4443 Support all picture switches like Ms Word does. Feature
• WORDSNET-9328 Japanese contents moves to next page after conversion from Doc to Pdf Feature
• WORDSNET-11622 Textboxes are not preserved during open/save a DOCX Regression
• WORDSNET-11745 Aspose Words V15 performance problem