configuring dependencies intellij idea, maven project

Question

I've created a maven project, imported my dependencies and checked the libraries which contain the expected files (except for the doc-files which are red).

For some reason (and I'm having this problem in both intellij and eclipse), If I create a class the imports and methods cannot be resolved.

Answer 1

我将在命令行上构建项目以下载依赖项，然后使Intellij中的缓存无效（在“文件”菜单下），然后重新启动IntelliJ。