<dependency>

            <groupId>org.apache.poi</groupId>

            <artifactId>poi</artifactId>

            <version>4.1.2</version>

        </dependency>

        <dependency>

            <groupId>org.apache.poi</groupId>

            <artifactId>poi-ooxml</artifactId>

            <version>4.1.2</version>

        </dependency>

        <dependency>

            <groupId>org.apache.poi</groupId>

            <artifactId>poi-ooxml-schemas</artifactId>

            <version>4.1.2</version>

        </dependency>

        <dependency>

            <groupId>org.apache.poi</groupId>

            <artifactId>poi-scratchpad</artifactId>

            <version>4.1.2</version>

        </dependency>    

<!-- poi_tl 工具，仅支持docx且友好

        开源，官方文档：http://deepoove.com/poi-tl/1.10.x/

        -->

        <dependency>

            <groupId>com.deepoove</groupId>

            <artifactId>poi-tl</artifactId>

            <version>1.10.0</version>

        </dependency>

 　　　　XWPFDocument document = new XWPFDocument(in);

        List<XWPFParagraph> paragraphs = document.getParagraphs();

        Map<String, String> replacements = new HashMap<>();
　　　　//这里是找回替换的特殊字符，我是通过正则去找回的。因为我的比较多。而且我一般习惯${}的写法。
　　　　//当然poi-tl也可以直接替换很方便，但是这里用的是原生的apache poi。因为担心poi-tl还不是很成熟。

        List<String> replaceFields = retrieveReplaceFields(document, regex);

        for (String replaceField : replaceFields) {

            String factField = StringUtils.substringBetween(replaceField, prefix, suffix);

            String val = retrieveData(factField, data);

            replacements.put(replaceField,val);

        }
　　　　//这里是普通段落

        replaceInParagraphs(replacements,paragraphs);

        //处理表格

        Iterator<XWPFTable> iterator = document.getTablesIterator();

        while (iterator.hasNext()) {

            XWPFTable table = iterator.next();

            List<XWPFTableRow> rows = table.getRows();

            for (XWPFTableRow row : rows) {

                List<XWPFTableCell> tableCells = row.getTableCells();

                for (XWPFTableCell cell : tableCells) {

                    List<XWPFParagraph> cellParagraphs = cell.getParagraphs();

                    replaceInParagraphs(replacements,cellParagraphs);

                }

            }

        }

        ByteArrayOutputStream output = new ByteArrayOutputStream();

        document.write(output);

      document.write(new FileOutputStream("C:\\Users\\dato\\Desktop\\dato.docx"));

private static long replaceInParagraphs(Map<String, String> replacements, List<XWPFParagraph> xwpfParagraphs) {
    long count = 0;
    for (XWPFParagraph paragraph : xwpfParagraphs) {
        List<XWPFRun> runs = paragraph.getRuns();
        for (Map.Entry<String, String> replPair : replacements.entrySet()) {
            String find = replPair.getKey();
            String repl = replPair.getValue();
            TextSegment found = paragraph.searchText(find, new PositionInParagraph());
            if ( found != null ) {
                count++;
                if ( found.getBeginRun() == found.getEndRun() ) {
                    // whole search string is in one Run
                    XWPFRun run = runs.get(found.getBeginRun());
                    String runText = run.getText(run.getTextPosition());
                    String replaced = runText.replace(find, repl);
                    run.setText(replaced, 0);
                } else {
                    // The search string spans over more than one Run
                    // Put the Strings together
                    StringBuilder b = new StringBuilder();
                    for (int runPos = found.getBeginRun(); runPos <= found.getEndRun(); runPos++) {
                        XWPFRun run = runs.get(runPos);
                        b.append(run.getText(run.getTextPosition()));
                    }
                    String connectedRuns = b.toString();
                    String replaced = connectedRuns.replace(find, repl);
                    // The first Run receives the replaced String of all connected Runs
                    XWPFRun partOne = runs.get(found.getBeginRun());
                    partOne.setText(replaced, 0);
                    // Removing the text in the other Runs.
                    for (int runPos = found.getBeginRun()+1; runPos <= found.getEndRun(); runPos++) {
                        XWPFRun partNext = runs.get(runPos);
                        partNext.setText("", 0);
                    }
                }
            }
        }
    }
    return count;
}