Spring reports an error: the prefix “context” of the element “context: component scan” is not bound. Solve the problem

An error is reported in the spring configuration file: the prefix "context" of the element "context: component scan" is not bound. This is what I encountered when I was working on the project. The project manager and colleagues reminded me to solve it. Here's how to solve it.

1. The spring configuration information is as follows:

2. The error message is as follows:

[problem analysis]

The context tag is used in the configuration file, but it is not declared.

[@ r_419_2422 @ case] add the statement of context in the configuration file

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