If I use the getHtmlString() method and the cell is empty, the result is a self-closing tag (empty tag, void element, singleton tag) <font>
.
Example
<Font Style="FONT-FAMILY: Calibri;FONT-SIZE: 12pt;COLOR: #000000;" />
Steps to reproduce
String xlsxContent = "UEsDBBQABgAIAAAAIQCkU8XPTgEAAAgEAAATAAgCW0NvbnRlbnRfVHlwZXNdLnhtbCCiBAIooAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACsk8tOwzAQRfdI/EPkLYrdskAINe2CxxK6KB9g4kli1S953NL+PRP3sUChFWo3sWLP3HM9M57MNtYUa4iovavYmI9YAa72Sru2Yp+Lt/KRFZikU9J4BxXbArLZ9PZmstgGwIKyHVasSyk8CYF1B1Yi9wEcnTQ+WpnoN7YiyHopWxD3o9GDqL1L4FKZeg02nbxAI1cmFa8b2t45iWCQFc+7wJ5VMRmC0bVM5FSsnfpFKfcETpk5Bjsd8I5sMDFI6E/+BuzzPqg0USso5jKmd2nJhtgY8e3j8sv7JT8tMuDSN42uQfl6ZakCHEMEqbADSNbwvHIrtTv4PsHPwSjyMr6ykf5+WfiMj0T9BpG/l1vIMmeAmLYG8Nplz6KnyNSvefQBaXIj/J9+GM0+uwwkBDFpOA7nUJOPRJr6i68L/btSoAbYIr/j6Q8AAAD//wMAUEsDBBQABgAIAAAAIQC1VTAj9AAAAEwCAAALAAgCX3JlbHMvLnJlbHMgogQCKKAAAgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAArJJNT8MwDIbvSPyHyPfV3ZAQQkt3QUi7IVR+gEncD7WNoyQb3b8nHBBUGoMDR3+9fvzK2908jerIIfbiNKyLEhQ7I7Z3rYaX+nF1ByomcpZGcazhxBF21fXV9plHSnkodr2PKqu4qKFLyd8jRtPxRLEQzy5XGgkTpRyGFj2ZgVrGTVneYviuAdVCU+2thrC3N6Dqk8+bf9eWpukNP4g5TOzSmRXIc2Jn2a58yGwh9fkaVVNoOWmwYp5yOiJ5X2RswPNEm78T/XwtTpzIUiI0Evgyz0fHJaD1f1q0NPHLnXnENwnDq8jwyYKLH6jeAQAA//8DAFBLAwQUAAYACAAAACEAjYfacOAAAAAtAgAAGgAIAXhsL19yZWxzL3dvcmtib29rLnhtbC5yZWxzIKIEASigAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAArJHLasMwEEX3hf6DmH09dgqllMjZlEK2xf0AIY8fxJaEZpLWf1/hgt1ASDbZCK4G3XMkbXc/46BOFLn3TkOR5aDIWV/3rtXwVX08vYJiMa42g3ekYSKGXfn4sP2kwUg6xF0fWKUWxxo6kfCGyLaj0XDmA7k0aXwcjaQYWwzGHkxLuMnzF4z/O6A861T7WkPc18+gqikk8u1u3zS9pXdvjyM5uYBAlmlIF1CViS2Jhr+cJUfAy/jNPfGSnoVW+hxxXotrDsU9Hb59PHBHJKvHssU4TxYZPPvk8hcAAP//AwBQSwMEFAAGAAgAAAAhADIx0i1dAgAAAQUAAA8AAAB4bC93b3JrYm9vay54bWysVF1vmzAUfZ+0/2D5nRoIJASFVORLqzRNVdWPZwdMsGJsZpsl1dT/vmsYXbu+dB8vmGtfDufcc68Xl+dGoG9MG65khoMLHyMmC1Vyecjw3e3OSzAylsqSCiVZhh+ZwZfLjx8WJ6WPe6WOCACkyXBtbZsSYoqaNdRcqJZJOKmUbqiFUB+IaTWjpakZs40goe9PSUO5xANCqt+DoaqKF2yjiq5h0g4gmglqgb6peWtGtKZ4D1xD9bFrvUI1LUDsueD2sQfFqCnSq4NUmu4FyD4HMTrrcESH8A18wwutjKrsBcCRgegbzYFPguCVbED9S6iYaPaNO+NCvFxUXLD7wUdE2/YLbRxtgZGgxm5LblmZ4RmE6sRebeiuXXVcwGngh4GPyfLZ22uNSlbRTthbcHWEh8TpdB7GLhOqlAvLtKSWrZW0YMpPO//VgB57XSuwG92wrx3XDLoMCg9a4UmLlO7NNbU16rTIMLkzIJ40zJAXJtG3XfAHNtHCSSSgceAxvP+ud7lwY3DP2cn8qpwL0fmBy1KdoOwJjNXjGM2nEJ36owde2jrD4WwaPe99YvxQW1fk2G1Cf6QdB3e+r5NJEk2SnTdL8om3yqPQy3fxxlvn82izSSbTeJc/9YxfEOrHDYj1K5J9V6xgXmwAc+1G8coZj5FO3T/0VRn0CONnBRUFdIFb+sRpOA8mLoOd7Wdj+xUM4EAviPx85s8jz99OYi9K5qEHdENvHW3CbTzbbrar+Ol/DlDfB+l4DzmWNdX2VtPiCLfXDatW1MAMDIKAL9g3sibjV8sfAAAA//8DAFBLAwQUAAYACAAAACEAhqssc6YCAABUBgAADQAAAHhsL3N0eWxlcy54bWykVd9r2zAQfh/sfxB6d2W7sZcE22VpaihsMEgHe1VsORHVjyDJmbOx/30nO4kTOrbRvkSn8+m77+47KdldJwXaM2O5VjmObkKMmKp0zdUmx1+fymCKkXVU1VRoxXJ8YBbfFe/fZdYdBFttGXMIIJTN8da53ZwQW22ZpPZG75iCL402kjrYmg2xO8Nobf0hKUgchimRlCs8IMxl9T8gkprndhdUWu6o42suuDv0WBjJav64UdrQtQCqXTShFeqi1MSoM6ckvfdFHskro61u3A3gEt00vGIv6c7IjNBqRALk1yFFCQnjq9o780qkCTFsz718uMgarZxFlW6VAzGBqG/B/Fnp76r0n7xziCoy+wPtqQBPjEmRVVpogxxIB52LvEdRyYaIeyr42nDvbKjk4jC4+3O92sc4yaH3Pop4HsfFwiEuxJlV7AmAo8hAPseMKmGDjvbTYQfpFUzaANPH/SN6Y+ghipOLA6RPWGRrbWqY7LEfJ1eRCdY4IGr4ZutXp3fwu9bOgfpFVnO60YoKX8oAcjagnIoJsfLT/625wu4apFpZSvdY5xjukW/CyYRCjuaAN2w8/iXagP1mWNQ11/iAeEH7ivQ5PfJ653jV33VTw+wcQdC65cJx9QfKgFp3YxNCr4Hzl69vzzkP9KJmDW2Fezp/zPFof2Y1b2V8jvrC99r1EDke7U9eqyj1OVjnPlkYMFhRa3iOfz4sPsyWD2UcTMPFNJjcsiSYJYtlkEzuF8tlOQvj8P7XxRPwhgegf7GKDK7W3Ap4Jsyx2GOJq9EH3Rw3A/1+SoH2JfdZnIYfkygMytswCiYpnQbT9DYJyiSKl+lk8ZCUyQX35JUPRUiiaHhyPPlk7rhkgquTVieFLr0gEmz/UgQ5KUHGv4PiNwAAAP//AwBQSwMEFAAGAAgAAAAhAFgHN+lOBwAAwCAAABMAAAB4bC90aGVtZS90aGVtZTEueG1s7FnNixs3FL8X+j8Mc3f8NeOPJd7gz2yT3SRknZQctbbsUVYzMpK8GxMCJTn1UiikpZdCbz2U0kADDb30jwkktOkf0SfN2COt5SSbbEpadg2LR/69p6f3nn5683Tx0r2YekeYC8KSll++UPI9nIzYmCTTln9rOCg0fE9IlIwRZQlu+Qss/Evbn35yEW3JCMfYA/lEbKGWH0k52yoWxQiGkbjAZjiB3yaMx0jCI58Wxxwdg96YFiulUq0YI5L4XoJiUHt9MiEj7G8v1fYp6E6kUAMjyveVUryOHR+WFUIsRJdy7wjRlg8zjNnxEN+TvkeRkPBDyy/pP7+4fbGItjIhKjfIGnID/ZfJZQLjw4qek08PVpMGQRjU2iv9GkDlOq5f79f6tZU+DUCjEaw0tcXWWa90gwxrgNKvDt29eq9atvCG/uqaze1QfSy8BqX6gzX8YNAFL1p4DUrx4Ro+7DQ7PVu/BqX42hq+Xmr3grqlX4MiSpLDNXQprFW7y9WuIBNGd5zwZhgM6pVMeY6CbFhll5piwhK5KddidJfxAQAUkCJJEk8uZniCRpC/XUTJASfeLplGkHgzlDABw6VKaVCqwn/1CfQ3HVG0hZEhrewCS8TakLLHEyNOZrLlXwGtvgF58ezZ84dPnz/87fmjR88f/pLNrVVZcjsomZpyr378+u/vv/D++vWHV4+/Sac+iRcm/uXPX778/Y/XqYcV56548e2Tl0+fvPjuqz9/euzQ3ubowIQPSYyFdw0fezdZDAt02I8P+OkkhhEilgSKQLdDdV9GFvDaAlEXroNtF97mwDIu4OX5XcvW/YjPJXHMfDWKLeAeY7TDuNMBV9VchoeH82TqnpzPTdxNhI5cc3dRYgW4P58BvRKXym6ELTNvUJRINMUJlp76jR1i7FjdHUIsv+6REWeCTaR3h3gdRJwuGZIDK5FyoR0SQ1wWLgMh1JZv9m57HUZdq+7hIxsJ2wJRh/FDTC03XkZziWKXyiGKqenwXSQjl5H7Cz4ycX0hIdJTTJnXH2MhXDLXOazXCPpVYBh32PfoIraRXJJDl85dxJiJ7LHDboTimdNmkkQm9jNxCCmKvBtMuuB7zN4h6hnigJKN4b5NsBXuNxPBLSBX06Q8QdQvc+6I5WXM7P24oBOEXSzT5rHFrm1OnNnRmU+t1N7FmKJjNMbYu/WZw4IOm1k+z42+EgGr7GBXYl1Bdq6q5wQL7Om6Zp0id4mwUnYfT9kGe/YWJ4hngZIY8U2ar0HUrdSFU85Jpdfp6NAEXiNQ+EG+OJ1yXYAOI7n7m7TeiJB1dqln4c7XBbfi9zZ7DPbl3dPuS5DBp5YBYn9r3wwRtSbIE2aIoMBw0S2IWOHPRdS5qsXmTrmJvWnzMEBhZNU7MUneWPycKHvCf6fscRcwZ1DwuBW/T6mziVJ2ThQ4m3D/wbKmh+bJDQwnyTpnnVc151WN/7+vajbt5fNa5ryWOa9lXG9fH6SWycsXqGzyLo/u+cQbWz4TQum+XFC8K3TXR8AbzXgAg7odpXuSqxbgLIKvWYPJwk050jIeZ/JzIqP9CM2gNVTWzc6pyFRPhTdjAjpGelg3UfEJ3brvNI/32DjtdJbLqquZulAgmY+XwtU4dKlkiq7V8+7dSr3uh051l3VpgJI9jRHGZLYRVYcR9eUgROF1RuiVnYkVTYcVDaV+GaplFFeuANNWUYFXbg9e1Ft+GKQdZGjGQXk+VnFKm8nL6KrgnGmkNzmTmhkAJfYyA/JIN5WtG5enVpem2ltE2jLCSDfbCCMNI3gRzrLTbLmfZaybeUgt85QrlrshN6Pe+BCxViRyghtoYjIFTbzjll+rhnCfMkKzlj+BjjF8jWeQO0K9dSE6hQuXkeTphn8XZplxIXtIRKnDNemkbBATiblHSdzy1fJX2UATzSHatnIFCOGjNa4JtPKxGQdBt4OMJxM8kmbYjRHl6fQRGD7lCuevWvzdwUqSzSHc+9H42Dugc34TQYqF9bJy4JgIuDgop94cE7gJWxFZnn8nDqaMds2rKJ1D6TiiswhlJ4pJ5ilck+jKHP208oHxlK0ZHLruwoOpOmDf+9R981GtPGeQZn5mWqyiTk03mX64Q96wKj9ELatS6tbv1CLnuuaS6yBRnafEG07dtzgQDNPyySzTlMXrNKw4Oxu1TTvDgsDwRG2D31ZnhNMT73ryg9zJrFUHxLKu1ImvL8vNW212cBfIowf3h3MqhQ4l3FlzBEVfegOZ0gZskXsyqxHhmzfnpOXfL4XtoFsJu4VSI+wXgmpQKjTCdrXQDsNquR+WS71O5QEcLDKKy2F6UT+AKwy6yK7r9fjalX28vKW5MGJxkekr+aI2XF/ZlyuOK3tvqG7mfY8A6dyvVQbNarNTKzSr7UEh6HUahWa31in0at16b9Drho3m4IHvHWlw0K52g1q/UaiVu91CUCsp8xvNQj2oVNpBvd3oB+0HWRkDK0/pI/MFuFfbtf0PAAAA//8DAFBLAwQUAAYACAAAACEAVbdfYtcBAADTAwAAGAAAAHhsL3dvcmtzaGVldHMvc2hlZXQxLnhtbJyTwYrbMBCG74W+g9A9lu3YcWLiLGmzoXsolLbbnmV5bItYkpGUTULpu3fskGwhLIQ1MkgjzTcz0j/Lh6PqyAtYJ40uaBSElIAWppK6Kejzz+1kTonzXFe8MxoKegJHH1YfPywPxu5cC+AJErQraOt9nzPmRAuKu8D0oHGnNlZxj0vbMNdb4NXopDoWh+GMKS41PRNyew/D1LUUsDFir0D7M8RCxz3m71rZuwtNiXtwitvdvp8Io3pElLKT/jRCKVEif2q0sbzssO5jlHBBjhZHjP/0Ema030RSUljjTO0DJLNzzrflL9iCcXEl3dZ/FyZKmIUXOTzgKyp+X0pRemXFr7DpO2GzK2y4LpvvZVXQP2kcP27Tx/lkkWbRJEwT1NgmXUyST9tZEq+TcDpd/6WrZSXxhYeqiIW6oOuIstVyFM8vCQf335x4Xv6ADoQHDBBRMmizNGY3HHxCUzi4shvf7ajNb5aU3MFn0/2WlW8RgD1QQc33nf9uDl9ANq1H6wxrGESQV6cNOIHqQ3AQX7PacM8xTM8b+MptI7UjHdTjoYwSe6aEAc696QfXbJ4lYZRmyeL8YYDSeG/UG5stNg+gSMIAr7M2xl8WQ3HXdlz9AwAA//8DAFBLAwQUAAYACAAAACEALdipgUcBAABzAgAAEQAIAWRvY1Byb3BzL2NvcmUueG1sIKIEASigAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAlJJfa8MgFMXfB/sOwffEmJauSJLC/vRphcE6Nvbm9DYNjUbULu23n0naLKN92aOec3+eczFdHGQVfIOxZa0yRKIYBaB4LUpVZOhtvQznKLCOKcGqWkGGjmDRIr+9SbmmvDbwYmoNxpVgA09SlnKdoa1zmmJs+RYks5F3KC9uaiOZ80dTYM34jhWAkzieYQmOCeYYboGhHojohBR8QOq9qTqA4BgqkKCcxSQi+NfrwEh7daBTRk5ZuqP2nU5xx2zBe3FwH2w5GJumiZpJF8PnJ/hj9fzaVQ1L1e6KA8pTwSk3wFxt8hUzu70Nntp9qC/Gtykeqe0mK2bdyi99U4K4P14buDT5F7pC/TMgAh+R9oXOyvvk4XG9RHkSk3kYJyGZruM7SghNZp9thj/zbeT+Qp6S/Ic4jUfEMyBP8cU3yX8AAAD//wMAUEsDBBQABgAIAAAAIQA4hNa3mQEAACADAAAQAAgBZG9jUHJvcHMvYXBwLnhtbCCiBAEooAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAJySwW7bMAyG7wP2DobujZxuKIZAVtGmG3pYsQBJe2dkOhYmS4bIGsmep2/SF5tso6nT9tQbyZ/6+YmSutw3Luswkg2+EPNZLjL0JpTW7wpxv/l19kNkxOBLcMFjIQ5I4lJ//aJWMbQY2SJlycJTIWrmdiElmRoboFmSfVKqEBvglMadDFVlDd4E89igZ3me5xcS94y+xPKsPRqK0XHR8WdNy2B6PnrYHNoErNVV2zprgNMt9Z01MVCoOLsDYz0HqrOfe4NOyWmbSpxrNI/R8kHnSk5TtTbgcJlG6AocoZKvBXWL0K9vBTaSVh0vOjQcYkb2X1rguci2QNiDFaKDaMFzAuzbxmSIXUsc9VXcomXauucnZoxKpq5RGcLpgWlsv+v50JCC08beYKRJwinnxrJD+lOtIPIH2PMp9sAwQo841w6Yx5lTvuHeadIb72VoWvCHJByj39b/pft2E26A8WWnp0W1riFimZ7huPNjQd2mdUbXmyxr8DssX3reC/1feBg/vJ5fzPJveXrcSU3J16+t/wMAAP//AwBQSwECLQAUAAYACAAAACEApFPFz04BAAAIBAAAEwAAAAAAAAAAAAAAAAAAAAAAW0NvbnRlbnRfVHlwZXNdLnhtbFBLAQItABQABgAIAAAAIQC1VTAj9AAAAEwCAAALAAAAAAAAAAAAAAAAAIcDAABfcmVscy8ucmVsc1BLAQItABQABgAIAAAAIQCNh9pw4AAAAC0CAAAaAAAAAAAAAAAAAAAAAKwGAAB4bC9fcmVscy93b3JrYm9vay54bWwucmVsc1BLAQItABQABgAIAAAAIQAyMdItXQIAAAEFAAAPAAAAAAAAAAAAAAAAAMwIAAB4bC93b3JrYm9vay54bWxQSwECLQAUAAYACAAAACEAhqssc6YCAABUBgAADQAAAAAAAAAAAAAAAABWCwAAeGwvc3R5bGVzLnhtbFBLAQItABQABgAIAAAAIQBYBzfpTgcAAMAgAAATAAAAAAAAAAAAAAAAACcOAAB4bC90aGVtZS90aGVtZTEueG1sUEsBAi0AFAAGAAgAAAAhAFW3X2LXAQAA0wMAABgAAAAAAAAAAAAAAAAAphUAAHhsL3dvcmtzaGVldHMvc2hlZXQxLnhtbFBLAQItABQABgAIAAAAIQAt2KmBRwEAAHMCAAARAAAAAAAAAAAAAAAAALMXAABkb2NQcm9wcy9jb3JlLnhtbFBLAQItABQABgAIAAAAIQA4hNa3mQEAACADAAAQAAAAAAAAAAAAAAAAADEaAABkb2NQcm9wcy9hcHAueG1sUEsFBgAAAAAJAAkAPgIAAAAdAAAAAA==";
try {
InputStream is = new ByteArrayInputStream(Base64.getDecoder().decode(xlsxContent.getBytes(StandardCharsets.ISO_8859_1)));
//InputStream is = new FileInputStream("test.xlsx");
Workbook workbook = new Workbook(is);
Worksheet ws = workbook.getWorksheets().get(0);
Cell cell = ws.getCells().get(0, 0);
// Result: <Font Style="FONT-FAMILY: Calibri;FONT-SIZE: 12pt;COLOR: #000000;" />
String htmlString = cell.getHtmlString();
assert htmlString.endsWith("/>") : "String ends not with />";
System.out.println("String ends with /> - " + htmlString);
} catch (Exception ex) {
System.err.println("Error: " + ex.getMessage());
}
There are some problems:
- The
<font>
tag is not supported in HTML5 and deprecated an previous versions - The
<font>
tag is not a valid self-closing tag - Current browsers misrepresent the content
Example
<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>test</title>
</head>
<body>
<FONT style="color: #000000;" />
<FONT style="color: #FF0000; font-size: 20px; font-weight: bold;" />
<p>
This content is red and bold
</p>
</body>
</html>
Tested on
Aspose.Cells for Java 18.1 & 18.2
Question
Is it a bug? If yes, is it possible to fix the problems in the next version?
Thank you