After java POI merge two open doxc Word prompts The file is corrupt and can not be opened after generation

Problem Description:

java backend Apache POI export of Word, Word template when it comes to the two merge, the merged file open questions in the following figure appears!

Problems found:

Find a circle in the last blog java development doxc download prompts The file is corrupt and can not be opened to find a solution.

Troubleshooting:

The blog is mentioned in Question tags, which I wrote a tag matching

    /** 获取指定标签中的内容
     * @param xml
     * @param label
     * @return
     */
    public static String regex(String xml, String label) {
        String context = "";
        // 正则表达式
        String rgex = "<" + label + "[^>]*>((?:(?!<\\/" + label + ">)[\\s\\S])*)<\\/" + label + ">";
        Pattern pattern = Pattern.compile(rgex);// 匹配的模式
        Matcher m = pattern.matcher(xml);
        // 匹配的有多个
        List<String> list = new ArrayList<String>();
        while (m.find()) {
            int i = 1;
            list.add(m.group(i));
            i++;
        }
        if (list.size() > 0) {
            // 输出内容自己定义
            context = String.valueOf(list.size());
        }
        return context;
    }

Then check when POI merge POI will look into the Word xml w:sectPrtag case

    /** 两个对象进行追加
     * 2019-06-26 houzw添加
     * @param src 目标文档
     * @param append 子文档
     * @return
     * @throws Exception
     */
    public static XWPFDocument mergeWord(XWPFDocument src, XWPFDocument append) throws Exception {
//        XWPFParagraph paragraph = src.createParagraph();
//        //设置分页符
//        paragraph.setPageBreak(true);

        CTBody src1Body = src.getDocument().getBody();
        CTBody src2Body = append.getDocument().getBody();

        List<XWPFPictureData> allPictures = append.getAllPictures();
        // 记录图片合并前及合并后的ID
        Map<String, String> map = new HashMap();
        for (XWPFPictureData picture : allPictures) {
            String before = append.getRelationId(picture);
            // 将原文档中的图片加入到目标文档中
            String after = src.addPictureData(picture.getData(), Document.PICTURE_TYPE_PNG);
            map.put(before, after);
        }

        appendBody(src1Body, src2Body, map);

        return src;

    }

    private static void appendBody(CTBody src, CTBody append, Map<String, String> map) throws Exception {
        XmlOptions optionsOuter = new XmlOptions();
        optionsOuter.setSaveOuter();
        String appendString = append.xmlText(optionsOuter);

        String srcString = src.xmlText();
        String regex = regex(srcString, "w:sectPr");
        System.out.println(regex);
        String prefix = srcString.substring(0, srcString.indexOf(">") + 1);
        String mainPart = srcString.substring(srcString.indexOf(">") + 1, srcString.lastIndexOf("<"));
        String sufix = srcString.substring(srcString.lastIndexOf("<"));
        String addPart = appendString.substring(appendString.indexOf(">") + 1, appendString.lastIndexOf("<"));

        if (map != null && !map.isEmpty()) {
            // 对xml字符串中图片ID进行替换
            for (Map.Entry<String, String> set : map.entrySet()) {
                addPart = addPart.replace(set.getKey(), set.getValue());
            }
        }
        // 将两个文档的xml内容进行拼接
        CTBody makeBody = CTBody.Factory.parse(prefix + mainPart + addPart + sufix);

        src.set(makeBody);
    }

Three word documents merge, the resulting output 2 means that after the first two documents merge w:sectPrtag has two. Because I was before the output of the target template merge w:sectPrlabel situation.

Address specific method

Remove the additional word content w:sectPrlabel to ensure that only a synthesis of word w:sectPrtags

        String rgex = "<[\\s]*?w:sectPr[^>]*?>[\\s\\S]*?<[\\s]*?\\/[\\s]*?w:sectPr[\\s]*?>";
        appendString = appendString.replaceAll(rgex, "");

So far the problem is solved! Question is always one-sided, and sincerely hope you Tell me treatise, there are new ideas message me, we can talk about.

Thank you, I wish you all have fun.