[原创] Java poi替换模板

设置替换内容Map（也可以通过反射根据字段名从实体类中获取字段值）

// data为实体类
HashMap<String, String> valueMap = new HashMap<>();

valueMap.put("#{name}", data.getName());
valueMap.put("#{unit}", data.getUnit());
valueMap.put("#{post}", data.getPost());
valueMap.put("#{phone}", data.getPhone());

设置提取占位符的正则表达式

// 该表达式可提取#{xxx}占位符
private static final String REG_EX = "#\\{.*?\\}";

遍历模板表格替换

// xxx.docx为模板路径
XWPFDocument document = new XWPFDocument(new FileInputStream(new File("xxx.docx")));
// 表格序号，从0开始
int n = 0;
XWPFTable table = document.getTables().get(n);
List<XWPFTableRow> rows = table.getRows();
for (int r = 0; r < rows.size(); r++) {
    XWPFTableRow row = rows.get(r);
    List<XWPFTableCell> tableCells = row.getTableCells();
    for (int c = 0; c < tableCells.size(); c++) {
        XWPFTableCell cell = tableCells.get(c);
        XWPFParagraph paragraph = cell.getParagraphs().get(0);
        List<XWPFRun> runs = paragraph.getRuns();
        for (XWPFRun run : runs) {
            String text = run.getText(0);
            Matcher matcher = pattern.matcher(text);
            while (matcher.find()) {
                String placeholder = matcher.group();
                text = text.replace(placeholder, valueMap.get(placeholder));
                run.setText(text, 0);
            }
        }
    }
}

try {
    // yyy.docx为文件输出路径
    document.write(new FileOutputStream(new File("yyy.docx")));
} catch (IOException e) {
    e.printStackTrace();
}

if (document != null) {
    try {
        document.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
}