Apache poi XWPF Paragraph line spacing
I also faced the same problem and found a solution after going through the ooxml-schemas source and the internals of the docx file generated. Here is the code
public void setSingleLineSpacing(XWPFParagraph para) { CTPPr ppr = para.getCTP().getPPr(); if (ppr == null) ppr = para.getCTP().addNewPPr(); CTSpacing spacing = ppr.isSetSpacing()? ppr.getSpacing() : ppr.addNewSpacing(); spacing.setAfter(BigInteger.valueOf(0)); spacing.setBefore(BigInteger.valueOf(0)); spacing.setLineRule(STLineSpacingRule.AUTO); spacing.setLine(BigInteger.valueOf(240));}
I recently have to use the line spacing with POI,and my approach was get the paragraph and get the ooxml-schema
XWPFParagraph paragraph;xml = paragraph->getCTP()->ToString();then the schema will be stored as a String in that xml variable and you have to retrieve the value from this with some string function
<w:spacing w:lineRule='atLeast' w:line='240' />the w:line is the one you need
Hope this helps!