似乎无法为此找到正确的语法?
<img id='barcode' src="https://api.qrserver.com/v1/create-qr-code/?data="'+ ${var.membervar} + "'+&size=100x100" alt="" title="HELLO" width="50" height="50" />
You should let Thymeleaf know you want to parse the src
attribute by using th:src
. Something like this would work ...
<img id='barcode' th:src="'https://api.qrserver.com/v1/create-qr-code/?data='+ ${var.membervar} + '&size=100x100'" alt="" title="HELLO" width="50" height="50" />
But for the fully qualified URLs you should be using Thymeleaf Link Urls where proper encoding will be applied for all your query parameters. For example ...
<img id='barcode' th:src="@{https://api.qrserver.com/v1/create-qr-code/(data=${var.membervar},size='100x100')}" alt="" title="HELLO" width="50" height="50" />
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