<repositories>
    <repository>
        <id>com.e-iceblue</id>
        <name>e-iceblue</name>
        <url>https://repo.e-iceblue.cn/repository/maven-public/</url>
    </repository>
</repositories>
<dependencies>
    <dependency>
        <groupId>e-iceblue</groupId>
        <artifactId>spire.doc</artifactId>
        <version>12.9.4</version>
    </dependency>
</dependencies>

import com.spire.doc.*;
import com.spire.doc.documents.*;
import com.spire.doc.fields.*;

import java.io.*;

public class Main {

    public static void main(String[] args) throws IOException {
        //加载源文档
        Document doc = new Document();
        doc.loadFromFile("data/考试题.docx");

        //获取第一个Section
        Section section =  doc.getSections().get(0);

        //设置页面大小A3并将页面设置为横向
        section.getPageSetup().setPageSize(PageSize.A3);
        section.getPageSetup().setOrientation(PageOrientation.Landscape);

        //分栏
        section.addColumn(0,0);

        //获取页脚并清空页脚内容
        HeaderFooter footer = section.getHeadersFooters().getFooter();
        footer.getChildObjects().clear();

        //页脚中插入一行二列的表格
        Table table=footer.addTable(false);
        table.resetCells(1,2);

        //左分栏页码
        addPage(table.get(0,0).addParagraph(),doc,"Left");

        //右分栏页码
        addPage(table.get(0,1).addParagraph(),doc,"Right");

        //保存结果文档
        doc.saveToFile("output/分栏word加页码.docx",FileFormat.Docx);

    }
    public static void addPage(Paragraph footerParagraph, Document document,String direction) {

        //添加文本、节域、页码域到段落 第1页，共7页
        footerParagraph.appendText("第 ");

        //自定义域代码。表达式域嵌套页码域 完成页码计算
        //创建表达式域
        Field currentPage_Field =new Field(document);
        currentPage_Field.setType(FieldType.Field_Expression);

        //设置前半部分域代码
        currentPage_Field.setCode("=2*");

        //添加到段落中
        footerParagraph.getItems().add(currentPage_Field);

        //创建嵌入表达式域中的页码域（获取当前页码）
        Field fieldPage=new Field(document);
        fieldPage.setType(FieldType.Field_Page);

        //添加到段落中
        footerParagraph.getItems().add(fieldPage);

        //给页码域设置“域分隔符标志”和“域结束标志”
        insertFieldMark(document,footerParagraph,fieldPage);

        //判断是左侧分栏页码还是右侧，如果是左侧，则追加域代码"减一"即"-1"
        //左侧分栏页码对应计算表达式应该是   2*page-1
        //右侧分栏页码对应计算表达式应该是   2*page
        //page表示当前页码
        if(direction.equals("Left")){
            footerParagraph.appendText("-1");
        }

        //给页码域设置“域分隔符标志”和“域结束标志”
        insertFieldMark(document,footerParagraph,currentPage_Field);
        footerParagraph.appendText(" 页，共 ");

        //添加嵌套“总页数”的表达式域
        Field totalPage_Field = new Field(document);
        totalPage_Field.setType(FieldType.Field_Expression);
        totalPage_Field.setCode("=2*");
        footerParagraph.getItems().add(totalPage_Field);

        // 添加总页数域
        Field pageNums=new Field(document);
        pageNums.setType(FieldType.Field_Num_Pages);
        footerParagraph.getItems().add(pageNums);

        // 给总页数域设置“域分隔符标志”和“域结束标志”
        insertFieldMark(document,footerParagraph,pageNums);

        //给表达式域设置“域分隔符标志”和“域结束标志”
        insertFieldMark(document,footerParagraph,totalPage_Field);
        footerParagraph.appendText(" 页");

        //设置段落样式
        footerParagraph.getStyle().getCharacterFormat().setFontSize(9f);
        footerParagraph.getStyle().getCharacterFormat().setFontName("宋体");
        footerParagraph.getFormat().setHorizontalAlignment(HorizontalAlignment.Center);
    }

    // 给field插入分隔符（Field_Separator）和结束（Field_End）
    public static void insertFieldMark(Document document,Paragraph paragraph, Field field) {

        // 插入Field的分隔符
        FieldMark separatorFieldMark = new FieldMark(document,FieldMarkType.Field_Separator);
        paragraph.getItems().add(separatorFieldMark);

        // 插入Field的结束符
        FieldMark endFieldMark = new FieldMark(document,FieldMarkType.Field_End);
        paragraph.getItems().add(endFieldMark);
        field.setEnd(endFieldMark);
    }
}