A valid solution to solving java: package XXX does not exist

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Copyright Notice

• The original author of this article: Brother Gu’s younger brother
• Author blog address: http://blog.csdn.net/lfdfhl

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Problem Description

I often encounter similar depressing problems in project development: the project can run before, and the functions are completely normal; but suddenly one day, the project cannot run normally, and the console reports an error: java: package XXX does not exist. For example: java: package com.github.pagehelper does not exist; the illustration is as follows:

solution

Here, an efficient solution to a similar problem is documented.

Step 1: Clear the cache

Step 2: Refresh Maven

Step 3: Restart IDEA