[Solved] Maven Package Error: Error assembling JAR

Cause of the problem
the jar package prompted is occupied by other programs, so it is impossible to repackage and replace the old package

1. If the jar package can be run, check whether the jar package is running and end the corresponding process
2. Check whether the read-write permission of the jar package has been changed and give the file read-write permission before operation
3. Check whether other software is editing the jar package file (such as compression software) and exit editing

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