Today is going to start a core business system for a long time, after downloading the launch access JSP has been reporting this error

Java error: Message Invalid TLD File: see JSP 2.2 Specification section 7.3.1 for more details

After struggling for an hour, I found it after reading the error message in the document.

The JSP tag class file. TLD file cannot be placed under the Web-info classes,lib,tags file, while the old project’S TLD tag is just placed under the tags directory, so it will go straight to GG. The current solution is to move the TLD tag to another legitimate folder, and you can read the above mentioned documents if you are interested.