java实现 poi XWPFDocument 生成word（附段落、表格）

XWPFDocument 生成word，效果图如下：

详细代码如下：

public static void main(String[] args) throws Exception{
        {
            XWPFDocument doc = new XWPFDocument();
            //创建段落================标题
            XWPFParagraph paragraph = doc.createParagraph();
            //设置对齐
            paragraph.setAlignment(ParagraphAlignment.CENTER);
            //相同属性得区域
            XWPFRun run = paragraph.createRun();
            run.setColor("000000");
            run.setText("java生成word文档");
            run.setFontFamily("黑体");
            run.setFontSize(29);
            run.setBold(true);
            //换行
            run.addBreak();
            //表格标题
            paragraph = doc.createParagraph();
            paragraph.setAlignment(ParagraphAlignment.LEFT);
            run = paragraph.createRun();
            run.setFontSize(18);
            run.setText("一、表格标题");
            run.setFontFamily("黑体");
            run.addBreak();
            //3*4 表格
            XWPFTable table = doc.createTable(3, 4);
            //表格属性
            CTTblPr tablePr = table.getCTTbl().addNewTblPr();
            //表格宽度
            CTJc cTJc = tablePr.addNewJc();
            //居中
            cTJc.setVal(STJc.CENTER);
            //列宽自动分割
            CTTblWidth tableWidth = tablePr.addNewTblW();
            //设置表格宽度
            tableWidth.setType(STTblWidth.DXA);
            tableWidth.setW(BigInteger.valueOf(9072));
            //========================================第一行===================================
            //设置单元格宽度
            XWPFTableRow carRow1 = table.getRow(0);
            //设置单元格高度
            carRow1.setHeight(768);
            //设置单元格宽度
            carRow1.getCell(0).getCTTc().addNewTcPr().addNewTcW().setW(BigInteger.valueOf(2268));
            //以创建段落的方式给单元格赋值
            List<XWPFParagraph> paragraphs = carRow1.getCell(0).getParagraphs();
            paragraphs.get(0).setAlignment(ParagraphAlignment.LEFT);
            paragraphs.get(0).setVerticalAlignment(TextAlignment.CENTER);
            XWPFRun run1 = paragraphs.get(0).createRun();
            run1.setText("语言");
            run1.setFontSize(10);
            run1.setFontFamily("微软雅黑");
            run1.setColor("000000");
            run1.setBold(true);
            carRow1.getCell(0).setVerticalAlignment(XWPFTableCell.XWPFVertAlign.CENTER);

            carRow1.getCell(1).getCTTc().addNewTcPr().addNewTcW().setW(BigInteger.valueOf(2268));
            paragraphs = carRow1.getCell(1).getParagraphs();
            paragraphs.get(0).setAlignment(ParagraphAlignment.CENTER);
            paragraphs.get(0).setVerticalAlignment(TextAlignment.CENTER);
            run1 = paragraphs.get(0).createRun();
            run1.setText("java");
            run1.setFontSize(10);
            run1.setFontFamily("微软雅黑");
            run1.setColor("000000");
            carRow1.getCell(1).setVerticalAlignment(XWPFTableCell.XWPFVertAlign.CENTER);

            carRow1.getCell(2).getCTTc().addNewTcPr().addNewTcW().setW(BigInteger.valueOf(2268));
            paragraphs = carRow1.getCell(2).getParagraphs();
            paragraphs.get(0).setAlignment(ParagraphAlignment.LEFT);
            paragraphs.get(0).setVerticalAlignment(TextAlignment.CENTER);
            run1 = paragraphs.get(0).createRun();
            run1.setText("作者");
            run1.setFontSize(10);
            run1.setFontFamily("微软雅黑");
            run1.setColor("000000");
            run1.setBold(true);
            carRow1.getCell(2).setVerticalAlignment(XWPFTableCell.XWPFVertAlign.CENTER);

            carRow1.getCell(3).getCTTc().addNewTcPr().addNewTcW().setW(BigInteger.valueOf(2268));
            paragraphs = carRow1.getCell(3).getParagraphs();
            paragraphs.get(0).setAlignment(ParagraphAlignment.CENTER);
            paragraphs.get(0).setVerticalAlignment(TextAlignment.CENTER);
            run1 = paragraphs.get(0).createRun();
            run1.setText("音乐土豆");
            run1.setFontSize(10);
            run1.setFontFamily("微软雅黑");
            run1.setColor("000000");
            carRow1.getCell(3).setVerticalAlignment(XWPFTableCell.XWPFVertAlign.CENTER);
            XWPFTableRow carRow2 = table.getRow(1);
            carRow2.setHeight(768);
            carRow2.getCell(0).getCTTc().addNewTcPr().addNewTcW().setW(BigInteger.valueOf(2268));
            paragraphs = carRow2.getCell(0).getParagraphs();
            paragraphs.get(0).setAlignment(ParagraphAlignment.LEFT);
            paragraphs.get(0).setVerticalAlignment(TextAlignment.CENTER);
            run1 = paragraphs.get(0).createRun();
            run1.setText("");
            carRow2.getCell(1).getCTTc().addNewTcPr().addNewTcW().setW(BigInteger.valueOf(2268));
            paragraphs = carRow2.getCell(1).getParagraphs();
            paragraphs.get(0).setAlignment(ParagraphAlignment.LEFT);
            paragraphs.get(0).setVerticalAlignment(TextAlignment.CENTER);
            run1 = paragraphs.get(0).createRun();
            run1.setText("");
            carRow2.getCell(2).getCTTc().addNewTcPr().addNewTcW().setW(BigInteger.valueOf(2268));
            paragraphs = carRow2.getCell(2).getParagraphs();
            paragraphs.get(0).setAlignment(ParagraphAlignment.LEFT);
            paragraphs.get(0).setVerticalAlignment(TextAlignment.CENTER);
            run1 = paragraphs.get(0).createRun();
            run1.setText("key");
            run1.setFontSize(10);
            run1.setFontFamily("微软雅黑");
            run1.setColor("000000");
            run1.setBold(true);
            carRow2.getCell(2).setVerticalAlignment(XWPFTableCell.XWPFVertAlign.CENTER);

            carRow2.getCell(3).getCTTc().addNewTcPr().addNewTcW().setW(BigInteger.valueOf(2268));
            paragraphs = carRow2.getCell(3).getParagraphs();
            paragraphs.get(0).setAlignment(ParagraphAlignment.CENTER);
            paragraphs.get(0).setVerticalAlignment(TextAlignment.CENTER);
            run1 = paragraphs.get(0).createRun();
            run1.setText("value");
            run1.setFontSize(10);
            run1.setFontFamily("微软雅黑");
            run1.setColor("000000");
            carRow1.getCell(3).setVerticalAlignment(XWPFTableCell.XWPFVertAlign.CENTER);
            XWPFTableRow carRow3 = table.getRow(2);
            carRow3.setHeight(768);
            carRow3.getCell(0).getCTTc().addNewTcPr().addNewTcW().setW(BigInteger.valueOf(2268));
            paragraphs = carRow3.getCell(0).getParagraphs();
            paragraphs.get(0).setAlignment(ParagraphAlignment.LEFT);
            paragraphs.get(0).setVerticalAlignment(TextAlignment.CENTER);
            run1 = paragraphs.get(0).createRun();
            run1.setText("创作时间");
            run1.setFontSize(10);
            run1.setFontFamily("微软雅黑");
            run1.setColor("000000");
            run1.setBold(true);
            carRow3.getCell(0).setVerticalAlignment(XWPFTableCell.XWPFVertAlign.CENTER);

            carRow3.getCell(1).getCTTc().addNewTcPr().addNewTcW().setW(BigInteger.valueOf(2268));
            paragraphs = carRow3.getCell(1).getParagraphs();
            paragraphs.get(0).setAlignment(ParagraphAlignment.LEFT);
            paragraphs.get(0).setVerticalAlignment(TextAlignment.CENTER);
            run1 = paragraphs.get(0).createRun();
            run1.setText("");

            carRow3.getCell(2).getCTTc().addNewTcPr().addNewTcW().setW(BigInteger.valueOf(2268));
            paragraphs = carRow3.getCell(2).getParagraphs();
            paragraphs.get(0).setAlignment(ParagraphAlignment.LEFT);
            paragraphs.get(0).setVerticalAlignment(TextAlignment.CENTER);
            run1 = paragraphs.get(0).createRun();
            run1.setText("2021年12月16日");
            run1.setFontSize(10);
            run1.setFontFamily("微软雅黑");
            run1.setColor("000000");
            run1.setBold(true);
            carRow3.getCell(2).setVerticalAlignment(XWPFTableCell.XWPFVertAlign.CENTER);

            carRow3.getCell(3).getCTTc().addNewTcPr().addNewTcW().setW(BigInteger.valueOf(2268));
            paragraphs = carRow3.getCell(3).getParagraphs();
            paragraphs.get(0).setAlignment(ParagraphAlignment.LEFT);
            paragraphs.get(0).setVerticalAlignment(TextAlignment.CENTER);
            run1 = paragraphs.get(0).createRun();
            run1.setText("");
            //合并列
            horizontal(table,2,0,1);
            horizontal(table,2,2,3);
            //合并行
            vertically(table,0,0,1);
            //输出到D盘
            FileOutputStream os = new FileOutputStream("D:\\测试.docx");
            doc.write(os);
            os.close();
        }

XWPFTable 合并单元格