处理 word 模板 xml 分割问题

　　以 word 做模板时，文档中的字符串在 xml 中可能被打散到多个节点。

　　给出上下界字符（比如 {} ），去除中间无用的 dom 节点，使其之间的内容在 xml 中是连续完整的字符串。

　　用双指针标出上下界后对其中的 dom 节点进行替换。

 public static void format(String inPath, String outPath, char beginFlag, char endFlag) throws Exception {
        InputStream in = new FileInputStream(inPath);
        OutputStream outputStream = new FileOutputStream(outPath);
        StringBuilder stringBuilder = new StringBuilder();
        byte[] bytes = new byte[1024];
        String pre = null;
        int len = -1;
        while ((len = in.read(bytes)) != -1) {
            byte[] bytes2 = new byte[len];
            for (int k = 0; k < len; k++) bytes2[k] = bytes[k];
            String content = new String(bytes2, "UTF-8");
            stringBuilder.append(content);
        }
        in.close();
        int left = 0, right = 0;
        while (left < stringBuilder.length()) {
            if (right > left) {
                if (stringBuilder.charAt(right) == endFlag) {
                    formatString(stringBuilder, left, right);
                    right++;
                    left = right;
                } else right++;
            } else {
                if (stringBuilder.charAt(left) == beginFlag) right++;
                else {
                    left++;
                    right++;
                }
            }
        }
        String s = stringBuilder.toString();
        if (s.contains("$")) s = s.replaceAll("\\$", "");
        byte[] bytes1 = s.getBytes("UTF-8");
        outputStream.write(bytes1, 0, bytes1.length);
        outputStream.flush();
        outputStream.close();
    }

    private static void formatString(StringBuilder stringBuilder, int left, int right) {
        boolean isDel = false;
        for (int i = left; i < right; i++) {
            if (isDel) {
                if (stringBuilder.charAt(i) == '>') isDel = false;
                stringBuilder.setCharAt(i, '$');
            } else if (stringBuilder.charAt(i) == '<') {
                stringBuilder.setCharAt(i, '$');
                isDel = true;
            }
        }
    }