使用openffice通过html生成pdf，变量无法找到并替换问题

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<!--    letter-spacing需要设置-否则解析不出变量-letter-spacing: 2px;-->
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<!--    只加font-family: '仿宋';font-size: 14px;都可以-->
    <!-- 插入模板start   -->
    <p style="width: 100%;height: 35px; margin: 0 auto"><img style="width: 100%; height: 35px; object-fit: contain" src="http://192.168.110.178/business/img/iemp_header.png" /></p>
    <p>&nbsp;</p>
    <p style="text-align: center"><strong><u>S</u></strong><strong><u>TUDENT TRANSCRIPT</u></strong></p>
    <p>&nbsp;</p>
    <p>Neoscholar Education certifies that:</p>
    <table style="width: 100%;margin: 0 auto;" border="1" cellspacing="0" width="100%"  cellpadding="2">
        <tbody>
        <tr>
            <td style="width: 80px" align="center" width="80">
                <p><strong>NA</strong><strong>M</strong><strong>E</strong></p>
            </td>
            <td style="width: 200px;" align="center" width="200">
                <p>${cnNamePinYin}</p>
            </td>
            <td style="width: 140px;" align="center" width="140">
                <p><strong>STUDENT NUMBER</strong></p>
            </td>
            <td style="width: 162px;" align="center" width="162">
                <p>${customerCode}</p>
            </td>
        </tr>
        <tr>
            <td style="width: 80px;" align="center" width="80">
                <p><strong>GENDER</strong></p>
            </td>
            <td style="width: 200px;" align="center" width="200">
                <p>${customerSex}</p>
            </td>
            <td style="width: 140px;" align="center" width="140">
                <p><strong>NATIONALITY</strong></p>
            </td>
            <td style="width: 162px;" align="center" width="162">
                <p>CHINA</p>
            </td>
        </tr>
        </tbody>
    </table>
    <p>&nbsp;</p>
    <p>Has successfully completed the course of IEMP ${projectNameEn} Session:</p>
    <table style="width: 100%;margin: 0 auto;" border="1" cellspacing="0" width="100%"  cellpadding="2">
        <tbody>
        <tr>
            <td style="width: 30%" align="center" width="208">
                <p style="text-indent: 0px;"><strong>Year</strong></p>
            </td>
            <td style="width: 45%" align="center" width="275">
                <p style="text-indent: 0px;"><strong>Subject</strong></p>
            </td>
            <td style="width: 25%" align="center" width="138">
                <p style="text-indent: 0px;"><strong>Grade</strong></p>
            </td>
        </tr>
        <tr>
            <td style="width: 30%" align="center" width="208">
                <p style="text-indent: 0px;">${projectNameEn}</p>
            </td>
            <td style="width: 45%" align="center" width="275">
                <p style="text-indent: 0px;">${courseNameEn}</p>
            </td>
            <td style="width: 25%" align="center" width="138">
                <p style="text-indent: 0px;">${grade}</p>
            </td>
        </tr>
        <tr>
            <td style="width: 30%" align="center" width="208">
                <p style="text-indent: 0px;"><strong>Professor</strong></p>
            </td>
            <td style="width: 45%" align="center" width="275">
                <p style="text-indent: 0px;"><strong>Respective Home College/University</strong></p>
            </td>
            <td style="width: 25%" align="center" width="138">
                <p style="text-indent: 0px;"><strong>Email</strong></p>
            </td>
        </tr>
        <tr>
            <td style="width: 30%" align="center" width="208">
                <p style="text-indent: 0px;">${professor}</p>
            </td>
            <td style="width: 45%" align="center" width="275">
                <p style="text-indent: 0px;">${school}</p>
            </td>
            <td style="width: 25%" align="center" width="138">
                <p style="text-indent: 0px;">&nbsp;${email}</p>
            </td>
        </tr>
        </tbody>
    </table>
    <p>&nbsp;</p>
    <span style="text-align: center;opacity: 0;font-family: '仿宋';font-size: 14px;">{{sealstamp}}</span>
<!--    {{sealstamp}}必须有属性font-family: '仿宋';font-size: 14px;否则获取不到变量{{sealstamp}}-算是一个bug-->
    <p style="width: 100%;margin: 0 auto;line-height: 1.5">IEMP Program is an academic Online program administrated by Neoscholar Education which is serving as a platform for international education by world-class Universities and as a gateway for their research engagement with China.</p>
    <p style="width: 100%;margin: 0 auto;line-height: 1.5">Each professor/instructor of IEMP program is invited to participate from world-known college. They design and teach the courses in the same manner and with identical requirements of their home institutions. All lectures/readings are in English and all student works are also performed in English. Academic consistency is therefore maintained in accordance with the academic requirements at their respective U.S. colleges. Individual course syllabus is available upon request.</p>
    <p>&nbsp;</p>
    <p style="width: 100%; height: 100px; margin: 0 auto; position: fixed; bottom: 0"><img style="width: 100%; height: 100px; object-fit: contain" src="http://192.168.110.178/business/img/iemp_footer.png" /></p>
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