poi填充word模板内容

1. word模板示例

2. 引入pom

        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>5.2.2</version>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>5.2.2</version>
        </dependency>

tips ：poi跟poi-ooxml版本最好一致，否则会报错

3. Java代码

public class XwpfdUtil {

    public static ResponseEntity<byte[]> changWord(String inputUrl, String name, Map<String, String> textMap) throws IOException {
        //模板转换默认成功
        byte[] finalBytes = new byte[0];
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        String fileName = null;
        try {
            //获取docx解析对象
            InputStream is = AccidentConsultationServiceImpl.class.getClassLoader().getResourceAsStream(inputUrl);
            XWPFDocument document = new XWPFDocument(is);
            //解析替换表格对象
            changeTable(document, textMap);
            //生成新的word
            outputStream = new ByteArrayOutputStream();
            document.write(outputStream);

            finalBytes = outputStream.toByteArray();
            fileName = URLEncoder.encode(name, "UTF-8");

            // 文件流写出到浏览器
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            close(outputStream);
        }
        return flushToResp(fileName, "docx", finalBytes);

    }

    public static ResponseEntity<byte[]> flushToResp(String fileName, String suffix, byte[] bytes) {
        if (bytes == null || bytes.length == 0) {
            throw new IllegalArgumentException("文件生成失败, 数据不能为空");
        }
        HttpHeaders headers = new HttpHeaders();
        headers.add("Cache-Control", "no-cache, no-store, must-revalidate");
        String encodedFileName = null;
        try {
            encodedFileName = URLEncoder.encode(fileName, StandardCharsets.UTF_8.name());
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        headers.add("Content-Disposition", String.format("attachment;filename=%s.%s;", encodedFileName, suffix));
        headers.add("Pragma", "no-cache");
        headers.add("Expires", "0");
        return ResponseEntity.ok().headers(headers).contentLength(bytes.length).contentType(MediaType.APPLICATION_OCTET_STREAM).body(bytes);
    }

    public static void changeTable(XWPFDocument document, Map<String, String> textMap) {
        //获取表格对象集合
        List<XWPFTable> tables = document.getTables();
        //只会有一个表格对象，所以取第一个表格对象
        List<XWPFTableRow> rows = tables.get(0).getRows();
        //遍历表格,并替换模板
        eachTable(rows, textMap);
    }

    /**
     * 遍历表格
     *
     * @param rows    表格行对象
     * @param textMap 需要替换的信息集合
     */
    public static void eachTable(List<XWPFTableRow> rows, Map<String, String> textMap) {

        for (XWPFTableRow row : rows) {
            //得到表格每一行的所有表格
            List<XWPFTableCell> cells = row.getTableCells();
            for (XWPFTableCell cell : cells) {
                //判断单元格是否需要替换
                if (checkText(cell.getText())) {
                    List<XWPFParagraph> paragraphs = cell.getParagraphs();
                    for (XWPFParagraph paragraph : paragraphs) {
                        List<XWPFRun> runs = paragraph.getRuns();
                        for (XWPFRun run : runs) {
                            run.setText(changeValue(run.toString(), textMap), 0);
                        }
                    }
                }
            }
        }
    }


    /**
     * 判断文本中时候包含$
     *
     * @param text 文本
     * @return 包含返回true, 不包含返回false
     */
    public static boolean checkText(String text) {
        boolean check = false;
        if (text.indexOf("$") != -1) {
            check = true;
        }
        return check;

    }

    /**
     * 匹配传入信息集合与模板
     *
     * @param value   模板需要替换的区域
     * @param textMap 传入信息集合
     * @return 模板需要替换区域信息集合对应值
     */
    public static String changeValue(String value, Map<String, String> textMap) {
        Set<Map.Entry<String, String>> textSets = textMap.entrySet();
        for (Map.Entry<String, String> textSet : textSets) {
            //匹配模板与替换值 格式${key}
            String key = "${" + textSet.getKey() + "}";
            if (value.indexOf(key) != -1) {
                value = textSet.getValue();
            }
        }
        //模板未匹配到区域替换为空
        if (checkText(value)) {
            value = "无";
        }
        return value;
    }

    /**
     * 关闭输入流
     *
     * @param is
     */
    public static void close(InputStream is) {
        if (is != null) {
            try {
                is.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * 关闭输出流
     *
     * @param os
     */
    public static void close(OutputStream os) {
        if (os != null) {
            try {
                os.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

4. 方法调用

Map<String, String> params = new HashMap<String, String>();  
//替换的值  
params.put("personnelNames", po.getPersonnelNames());  
params.put("deptName")

XwpfdUtil.changWord(inputUrl, "意见", params);