<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi</artifactId>
    <version>5.2.3</version>
</dependency>
<dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi-ooxml</artifactId>
    <version>5.2.3</version>
</dependency>

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

import java.io.FileOutputStream;
import java.io.IOException;

public class SimpleDocumentCreator {
    public static void main(String[] args) throws IOException {
        // 1. 創(chuàng)建空文檔
        XWPFDocument document = new XWPFDocument();
        
        // 2. 創(chuàng)建段落
        XWPFParagraph title = document.createParagraph();
        title.setAlignment(ParagraphAlignment.CENTER);
        
        // 3. 創(chuàng)建文本運(yùn)行并設(shè)置樣式
        XWPFRun titleRun = title.createRun();
        titleRun.setText("Apache POI示例文檔");
        titleRun.setBold(true);
        titleRun.setFontSize(16);
        
        // 4. 添加正文段落
        XWPFParagraph body = document.createParagraph();
        body.setAlignment(ParagraphAlignment.LEFT);
        body.setIndentationFirstLine(600); // 首行縮進(jìn)
        
        XWPFRun bodyRun = body.createRun();
        bodyRun.setText("這是使用Apache POI創(chuàng)建的Word文檔。");
        bodyRun.addBreak(); // 換行
        bodyRun.setText("POI支持豐富的文本格式設(shè)置。");
        
        // 5. 保存文檔
        try (FileOutputStream out = new FileOutputStream("SimpleDocument.docx")) {
            document.write(out);
        }
        
        document.close();
        System.out.println("文檔創(chuàng)建成功！");
    }
}

// 創(chuàng)建帶格式的段落
XWPFParagraph styledPara = document.createParagraph();
styledPara.setAlignment(ParagraphAlignment.BOTH); // 兩端對(duì)齊

XWPFRun styledRun = styledPara.createRun();
styledRun.setText("格式豐富的文本：");
styledRun.setColor("FF0000"); // 紅色
styledRun.setFontFamily("宋體");
styledRun.addBreak();

// 添加不同格式的文本
styledRun = styledPara.createRun();
styledRun.setText("粗體+斜體");
styledRun.setBold(true);
styledRun.setItalic(true);
styledRun.addTab(); // 制表符

styledRun = styledPara.createRun();
styledRun.setText("下劃線(xiàn)");
styledRun.setUnderline(UnderlinePatterns.SINGLE);

// 創(chuàng)建3行4列的表格
XWPFTable table = document.createTable(3, 4);

// 設(shè)置表格寬度
table.setWidth("100%");

// 填充表頭
XWPFTableRow headerRow = table.getRow(0);
headerRow.getCell(0).setText("序號(hào)");
headerRow.getCell(1).setText("姓名");
headerRow.getCell(2).setText("年齡");
headerRow.getCell(3).setText("部門(mén)");

// 填充數(shù)據(jù)
for (int i = 1; i < 3; i++) {
    XWPFTableRow row = table.getRow(i);
    row.getCell(0).setText(String.valueOf(i));
    row.getCell(1).setText("員工" + i);
    row.getCell(2).setText(String.valueOf(20 + i));
    row.getCell(3).setText(i % 2 == 0 ? "技術(shù)部" : "市場(chǎng)部");
}

// 合并單元格
table.getRow(2).getCell(3).setText("備注：所有部門(mén)");
table.addNewColSpan(2, 3, 2); // 合并第3行的第3-4列

// 設(shè)置表格邊框
CTTblPr tblPr = table.getCTTbl().getTblPr();
CTBorder border = tblPr.addNewTblBorders();
border.addNewBottom().setVal(STBorder.SINGLE);
border.addNewTop().setVal(STBorder.SINGLE);
border.addNewLeft().setVal(STBorder.SINGLE);
border.addNewRight().setVal(STBorder.SINGLE);
border.addNewInsideH().setVal(STBorder.SINGLE);
border.addNewInsideV().setVal(STBorder.SINGLE);

// 設(shè)置表頭背景色
for (XWPFTableCell cell : headerRow.getTableCells()) {
    cell.setColor("D3D3D3"); // 淺灰色背景
}

import org.apache.poi.util.Units;

// 從文件插入圖片
try (FileInputStream is = new FileInputStream("logo.png")) {
    XWPFParagraph imagePara = document.createParagraph();
    imagePara.setAlignment(ParagraphAlignment.CENTER);
    
    XWPFRun imageRun = imagePara.createRun();
    imageRun.addPicture(is, 
                       Document.PICTURE_TYPE_PNG, 
                       "logo.png", 
                       Units.toEMU(200), // 寬度
                       Units.toEMU(100)); // 高度
}

// 從字節(jié)數(shù)組插入圖片
byte[] imageData = getImageData(); // 獲取圖片字節(jié)數(shù)組的方法
XWPFRun imageRun = document.createParagraph().createRun();
imageRun.addPicture(new ByteArrayInputStream(imageData),
                   Document.PICTURE_TYPE_JPEG,
                   "photo.jpg",
                   Units.toEMU(150),
                   Units.toEMU(150));

public void readDocument(String filePath) throws IOException {
    try (FileInputStream fis = new FileInputStream(filePath);
         XWPFDocument document = new XWPFDocument(fis)) {
        
        System.out.println("==== 段落 ====");
        for (XWPFParagraph para : document.getParagraphs()) {
            System.out.println(para.getText());
        }
        
        System.out.println("\n==== 表格 ====");
        for (XWPFTable table : document.getTables()) {
            for (XWPFTableRow row : table.getRows()) {
                for (XWPFTableCell cell : row.getTableCells()) {
                    System.out.print(cell.getText() + "\t");
                }
                System.out.println();
            }
        }
    }
}

public void modifyDocument(String inputPath, String outputPath) throws IOException {
    try (FileInputStream fis = new FileInputStream(inputPath);
         XWPFDocument document = new XWPFDocument(fis)) {
        
        // 修改第一個(gè)段落
        XWPFParagraph firstPara = document.getParagraphs().get(0);
        if (firstPara != null) {
            XWPFRun run = firstPara.createRun();
            run.setText("\n(本文件由系統(tǒng)自動(dòng)生成)");
            run.setItalic(true);
            run.setColor("808080");
        }
        
        // 在文檔末尾添加新內(nèi)容
        XWPFParagraph newPara = document.createParagraph();
        newPara.setAlignment(ParagraphAlignment.RIGHT);
        XWPFRun newRun = newPara.createRun();
        newRun.setText("生成時(shí)間: " + LocalDate.now());
        newRun.addBreak(BreakType.PAGE); // 分頁(yè)符
        
        // 保存修改后的文檔
        try (FileOutputStream fos = new FileOutputStream(outputPath)) {
            document.write(fos);
        }
    }
}

// 創(chuàng)建頁(yè)眉
XWPFHeader header = document.createHeader(HeaderFooterType.DEFAULT);
XWPFParagraph headerPara = header.createParagraph();
headerPara.setAlignment(ParagraphAlignment.RIGHT);
XWPFRun headerRun = headerPara.createRun();
headerRun.setText("公司機(jī)密");
headerRun.setColor("FF0000");

// 創(chuàng)建頁(yè)腳
XWPFFooter footer = document.createFooter(HeaderFooterType.DEFAULT);
XWPFParagraph footerPara = footer.createParagraph();
footerPara.setAlignment(ParagraphAlignment.CENTER);
XWPFRun footerRun = footerPara.createRun();
footerRun.setText("頁(yè)碼: ");
footerRun.getCTR().addNewFldSimple().setInstr("PAGE \\* MERGEFORMAT");

// 創(chuàng)建目錄段落
XWPFParagraph tocPara = document.createParagraph();
tocPara.setStyle("TOCHeading");

XWPFRun tocRun = tocPara.createRun();
tocRun.setText("目錄");
tocRun.setBold(true);
tocRun.setFontSize(16);
tocRun.addBreak();

// 添加目錄字段
tocRun = tocPara.createRun();
tocRun.getCTR().addNewFldSimple().setInstr("TOC \\o \"1-3\" \\h \\z \\u");

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

public class LargeDocumentReader {
    public static void main(String[] args) throws Exception {
        OPCPackage pkg = OPCPackage.open("large.docx");
        XWPFEventBasedParser parser = new XWPFEventBasedParser();
        parser.parse(pkg, new XWPFVisitor() {
            @Override
            public void visitParagraph(XWPFParagraph paragraph) {
                System.out.println("段落: " + paragraph.getText());
            }
            
            @Override
            public void visitTable(XWPFTable table) {
                System.out.println("發(fā)現(xiàn)表格");
            }
        });
        pkg.close();
    }
}

// 創(chuàng)建并重用樣式
CTSectPr sectPr = document.getDocument().getBody().addNewSectPr();
CTPageSz pageSz = sectPr.addNewPgSz();
pageSz.setW(BigInteger.valueOf(12240)); // A4寬度
pageSz.setH(BigInteger.valueOf(15840)); // A4高度

// 創(chuàng)建段落樣式
CTStyle ctStyle = CTStyle.Factory.newInstance();
ctStyle.setStyleId("MyStyle");
CTPPr pPr = ctStyle.addNewPPr();
pPr.addNewSpacing().setAfter(BigInteger.valueOf(200)); // 段后間距
document.getStyle().addStyle(ctStyle);

???????// 應(yīng)用樣式
XWPFParagraph para = document.createParagraph();
para.setStyle("MyStyle");

run.setFontFamily("宋體");

document.getStyles().setDefaultFonts("宋體", null);