Apache POI：如何为字段设置字体样式（PAGE，PAGENUM，PAGEREF ...）

Question

从另一个（已回答）问题中，我学到了如何将页计数器添加到Word文档中。此外，我需要在字段（即页面计数器）上设置字体家族样式（颜色，粗体，斜体，下划线...）。这怎么能实现？

CTSimpleField ctSimpleField = paragraph.getCTP().addNewFldSimple(); 

CTSimpleField不提供直接设置这些属性的方法。

原题：How to add page numbers in format X of Y while creating a word document using apache poi api?

import java.io.*; 

import org.apache.poi.xwpf.usermodel.*; 

import org.apache.poi.xwpf.model.XWPFHeaderFooterPolicy; 

public class CreateWordHeaderFooter { 

public static void main(String[] args) throws Exception { 

    XWPFDocument doc= new XWPFDocument(); 

    // the body content 
    XWPFParagraph paragraph = doc.createParagraph(); 
    XWPFRun run=paragraph.createRun(); 
    run.setText("The Body:"); 

    paragraph = doc.createParagraph(); 
    run=paragraph.createRun(); 
    run.setText("Lorem ipsum.... page 1"); 

    paragraph = doc.createParagraph(); 
    run=paragraph.createRun(); 
    run.addBreak(BreakType.PAGE); 
    run.setText("Lorem ipsum.... page 2"); 

    paragraph = doc.createParagraph(); 
    run=paragraph.createRun(); 
    run.addBreak(BreakType.PAGE); 
    run.setText("Lorem ipsum.... page 3"); 

    // create header-footer 
    XWPFHeaderFooterPolicy headerFooterPolicy = doc.getHeaderFooterPolicy(); 
    if (headerFooterPolicy == null) headerFooterPolicy = doc.createHeaderFooterPolicy(); 

    // create header start 
    XWPFHeader header = headerFooterPolicy.createHeader(XWPFHeaderFooterPolicy.DEFAULT); 

    paragraph = header.getParagraphArray(0); 
    if (paragraph == null) paragraph = header.createParagraph(); 
    paragraph.setAlignment(ParagraphAlignment.LEFT); 

    run = paragraph.createRun(); 
    run.setText("The Header:"); 

    // create footer start 
    XWPFFooter footer = headerFooterPolicy.createFooter(XWPFHeaderFooterPolicy.DEFAULT); 

    paragraph = footer.getParagraphArray(0); 
    if (paragraph == null) paragraph = footer.createParagraph(); 
    paragraph.setAlignment(ParagraphAlignment.CENTER); 

    run = paragraph.createRun(); 
    run.setText("Page "); 
    // this adds the page counter 
    paragraph.getCTP().addNewFldSimple().setInstr("PAGE \\* MERGEFORMAT"); 
    run = paragraph.createRun(); 
    run.setText(" of "); 
    // this adds the page total number 
    paragraph.getCTP().addNewFldSimple().setInstr("NUMPAGES \\* MERGEFORMAT"); 

    doc.write(new FileOutputStream("CreateWordHeaderFooter.docx")); 

} 
} 

Answer 1

为了能够格式化，我们需要在Word运行。但要使用运行创建字段，我们需要为每个字段运行三次。一次运行标记FldChar开始，然后一次运行标记字段InstrText和第三次运行标记FldChar结束。每次运行都可以，但也必须根据需要进行格式化。

实施例：

import java.io.*; 

import org.apache.poi.xwpf.usermodel.*; 

import org.apache.poi.xwpf.model.XWPFHeaderFooterPolicy; 

public class CreateWordHeaderFooter { 

public static void main(String[] args) throws Exception { 

    XWPFDocument doc= new XWPFDocument(); 

    // the body content 
    XWPFParagraph paragraph = doc.createParagraph(); 
    XWPFRun run=paragraph.createRun(); 
    run.setText("The Body:"); 

    paragraph = doc.createParagraph(); 
    run=paragraph.createRun(); 
    run.setText("Lorem ipsum.... page 1"); 

    paragraph = doc.createParagraph(); 
    run=paragraph.createRun(); 
    run.addBreak(BreakType.PAGE); 
    run.setText("Lorem ipsum.... page 2"); 

    paragraph = doc.createParagraph(); 
    run=paragraph.createRun(); 
    run.addBreak(BreakType.PAGE); 
    run.setText("Lorem ipsum.... page 3"); 

    // create header-footer 
    XWPFHeaderFooterPolicy headerFooterPolicy = doc.getHeaderFooterPolicy(); 
    if (headerFooterPolicy == null) headerFooterPolicy = doc.createHeaderFooterPolicy(); 

    // create header start 
    XWPFHeader header = headerFooterPolicy.createHeader(XWPFHeaderFooterPolicy.DEFAULT); 

    paragraph = header.getParagraphArray(0); 
    if (paragraph == null) paragraph = header.createParagraph(); 
    paragraph.setAlignment(ParagraphAlignment.LEFT); 

    run = paragraph.createRun(); 
    run.setText("The Header:"); 

    // create footer start 
    XWPFFooter footer = headerFooterPolicy.createFooter(XWPFHeaderFooterPolicy.DEFAULT); 

    paragraph = footer.getParagraphArray(0); 
    if (paragraph == null) paragraph = footer.createParagraph(); 
    paragraph.setAlignment(ParagraphAlignment.CENTER); 

    run = paragraph.createRun(); 
    run.setBold(true); 
    run.setText("Page "); 

    run = paragraph.createRun(); 
    run.setBold(true); 
    run.getCTR().addNewFldChar().setFldCharType(org.openxmlformats.schemas.wordprocessingml.x2006.main.STFldCharType.BEGIN); 

    run = paragraph.createRun(); 
    run.setBold(true); 
    run.getCTR().addNewInstrText().setStringValue("PAGE \\* MERGEFORMAT"); 

    run = paragraph.createRun(); 
    run.setBold(true); 
    run.getCTR().addNewFldChar().setFldCharType(org.openxmlformats.schemas.wordprocessingml.x2006.main.STFldCharType.END); 

    run = paragraph.createRun(); 
    run.setBold(true); 
    run.setText(" of "); 

    run = paragraph.createRun(); 
    run.setBold(true); 
    run.getCTR().addNewFldChar().setFldCharType(org.openxmlformats.schemas.wordprocessingml.x2006.main.STFldCharType.BEGIN); 

    run = paragraph.createRun(); 
    run.setBold(true); 
    run.getCTR().addNewInstrText().setStringValue("NUMPAGES \\* MERGEFORMAT"); 

    run = paragraph.createRun(); 
    run.setBold(true); 
    run.getCTR().addNewFldChar().setFldCharType(org.openxmlformats.schemas.wordprocessingml.x2006.main.STFldCharType.END); 

    doc.write(new FileOutputStream("CreateWordHeaderFooter.docx")); 

} 
}