Total error importing Maven project, the MAVEN project in Eclipse is missing maven dependencies

The reason: Eclipse did not find Maven dependencies after introducing the MAVEN project. Make the code error, as shown in the following figure:

and the normal MAVEN project is this.

To solve the problem, reload, so that the Maven jar is imported. There are several ways.

And here is an ultra strong method. As shown in figure

Specific steps: Right-click Maven Project--> macven--> Enable Dependency Management because Maven project's MAVEN option is not turned on or invalid.

That will solve the problem.