poi生成word固定表格列宽

一、需求

根据数据库生成文档，文档包含大量表格，表格数量不确定，每个表格行数也不确定。

二、实现方案

引入依赖

xml 复制代码

<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>4.1.2</version>
</dependency>
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>ooxml-schemas</artifactId>
    <version>1.4</version>
</dependency>

代码实现

静态常量

java 复制代码

public static final int FONT_SIZE = 9;
public static final TitleStyle[] titleStyles = {
        new TitleStyle("一级标题", 44, true),
        new TitleStyle("二级标题", 36, true),
        new TitleStyle("三级标题", 32, true),
        new TitleStyle("四级标题", 30, false)};
        
public record TitleStyle(String name, int fontSize, boolean bold) {

}

创建文档

java 复制代码

/**
 * A3 Portrait  16840 23814 720
 * A3 Landscape 23814 16940 720
 * A4 Portrait  11907 16840 720
 * A4 Landscape 16840 11907 720
 */
public void createDocument(int width, int height, int top, int right, int bottom, int left) {
    XWPFDocument document = new XWPFDocument();
    CTSectPr sectPr = document.getDocument().getBody().addNewSectPr();

    CTPageSz pageSz = sectPr.addNewPgSz();
    pageSz.setW(BigInteger.valueOf(width));
    pageSz.setH(BigInteger.valueOf(height));
    pageSz.setOrient(width > height ? STPageOrientation.LANDSCAPE : STPageOrientation.PORTRAIT);

    CTPageMar pageMar = sectPr.addNewPgMar();
    pageMar.setTop(BigInteger.valueOf(top));
    pageMar.setRight(BigInteger.valueOf(right));
    pageMar.setBottom(BigInteger.valueOf(bottom));
    pageMar.setLeft(BigInteger.valueOf(left));

    for (int i = 0; i < titleStyles.length; i++) {
        addCustomHeadingStyle(document, titleStyles[i], i + 1);
    }
}

private static void addCustomHeadingStyle(XWPFDocument document, TitleStyle titleStyle, int headingLevel) {
    CTStyle ctStyle = CTStyle.Factory.newInstance();
    ctStyle.setStyleId(titleStyle.name());

    CTString styleName = CTString.Factory.newInstance();
    styleName.setVal(titleStyle.name());
    ctStyle.setName(styleName);

    CTDecimalNumber indentNumber = CTDecimalNumber.Factory.newInstance();
    indentNumber.setVal(BigInteger.valueOf(headingLevel));
    // lower number > style is more prominent in the formats bar
    ctStyle.setUiPriority(indentNumber);

    CTOnOff onOffNull = CTOnOff.Factory.newInstance();
    ctStyle.setUnhideWhenUsed(onOffNull);
    // style shows up in the formats bar
    ctStyle.setQFormat(onOffNull);

    // style defines a heading of the given level
    CTPPr ppr = CTPPr.Factory.newInstance();
    ppr.setOutlineLvl(indentNumber);
    ctStyle.setPPr(ppr);

    CTRPr rpr = CTRPr.Factory.newInstance();
    // font size
    CTHpsMeasure ctHpsMeasure = CTHpsMeasure.Factory.newInstance();
    ctHpsMeasure.setVal(BigInteger.valueOf(titleStyle.fontSize()));
    rpr.setSz(ctHpsMeasure);
    rpr.setSzCs(ctHpsMeasure);
    
    // fond bold
    if (titleStyle.bold()) {
        CTOnOff b = rpr.addNewB();
        b.setVal(STOnOff.TRUE);
    }
    
    ctStyle.setRPr(rpr);

    XWPFStyle style = new XWPFStyle(ctStyle);
    style.setType(STStyleType.PARAGRAPH);

    XWPFStyles styles = document.createStyles();
    styles.addStyle(style);
}

创建标题

java 复制代码

public void createTitle(int level, int id, String title) {
    XWPFParagraph paragraph = document.createParagraph();
    paragraph.setStyle(titleStyles[level - 1].name());
    XWPFRun run = paragraph.createRun();
    run.setText(title);

    CTBookmark bookmark = paragraph.getCTP().addNewBookmarkStart();
    bookmark.setName("bm_" + id);
    bookmark.setId(BigInteger.valueOf(id));
    paragraph.getCTP().addNewBookmarkEnd().setId(BigInteger.valueOf(id));
}

创建表格

java 复制代码

public XWPFTable createTable(int width, TableTitle... titles) {
    XWPFTable table = document.createTable(1, titles.length);
    CTTblPr TblPr = table.getCTTbl().addNewTblPr();
    TblPr.addNewTblLayout().setType(STTblLayoutType.FIXED); // 布局固定，不随内容改变宽度
    CTTblWidth tblW = TblPr.isSetTblW() ? TblPr.getTblW() : TblPr.addNewTblW();
    tblW.setType(STTblWidth.DXA);
    tblW.setW(BigInteger.valueOf(width));
    // 表格边颜色
    CTTblBorders borders = TblPr.addNewTblBorders();
    tableBorderStyle(borders.addNewInsideH());
    tableBorderStyle(borders.addNewInsideV());
    tableBorderStyle(borders.addNewLeft());
    tableBorderStyle(borders.addNewRight());
    tableBorderStyle(borders.addNewTop());
    tableBorderStyle(borders.addNewBottom());

    XWPFTableRow row = table.getRow(0);
    for (int i = 0; i < titles.length; i++) {
        TableTitle title = titles[i];
        XWPFTableCell cell = row.getCell(i);
        cell.setColor("3a60a0");
        if (title.width() > 0) {
            CTTcPr ctTcPr = cell.getCTTc().addNewTcPr();
            CTTblWidth tblWidth = ctTcPr.isSetTcW() ? ctTcPr.getTcW() : ctTcPr.addNewTcW();
            tblWidth.setW(BigInteger.valueOf(title.width()));
            tblWidth.setType(STTblWidth.DXA);
        }
        XWPFParagraph paragraphArray = cell.getParagraphArray(0);
        XWPFRun run = paragraphArray.createRun();
        run.setText(title.name());
        run.setBold(true);
        run.setColor("f5f5f5a");
        run.setFontSize(FONT_SIZE);
        paragraphArray.setAlignment(ParagraphAlignment.CENTER); // 水平居中
    }
    return table;
}

public record TableTitle(String name, int width) {

}

创建空行

java 复制代码

public void createBlankLine() {
    document.createParagraph();
}

创建表格行
java 复制代码
```
XWPFTableRow row = table.createRow();
```
获取单元格
java 复制代码
```
XWPFTableCell cell = row.getCell(0);
```

创建超链接

java 复制代码

public static void createHyperlinkRunToAnchor(XWPFParagraph paragraph, String text, int id) {
    paragraph.setVerticalAlignment(TextAlignment.CENTER);
    CTHyperlink ctHyperlink = paragraph.getCTP().addNewHyperlink();
    ctHyperlink.setAnchor("bm_" + id);
    ctHyperlink.addNewR();
    XWPFHyperlinkRun hyperlinkRun = new XWPFHyperlinkRun(ctHyperlink, ctHyperlink.getRArray(0), paragraph);
    hyperlinkRun.setText(text);
    hyperlinkRun.setColor("0000FF");
    hyperlinkRun.setUnderline(UnderlinePatterns.SINGLE);
    hyperlinkRun.setFontSize(FONT_SIZE);
}

public static void createHyperlinkRunToFile(XWPFParagraph paragraph, String text, String fileName, Integer id) {
    paragraph.setVerticalAlignment(TextAlignment.CENTER);
    String uri = fileName;
    if (id != null) {
        uri += "#bm_" + id;
    }
    String rId = paragraph.getDocument().getPackagePart()
            .addExternalRelationship(uri, XWPFRelation.HYPERLINK.getRelation()).getId();
    CTHyperlink ctHyperlink = paragraph.getCTP().addNewHyperlink();
    ctHyperlink.setId(rId);
    ctHyperlink.addNewR();
    XWPFHyperlinkRun hyperlinkRun = new XWPFHyperlinkRun(ctHyperlink, ctHyperlink.getRArray(0), paragraph);
    hyperlinkRun.setText(text);
    hyperlinkRun.setColor("0000FF");
    hyperlinkRun.setUnderline(UnderlinePatterns.SINGLE);
    hyperlinkRun.setFontSize(FONT_SIZE);
}