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How to solve the call 'refresh' before multicasting events exception in the ssh project, many novices are not very clear about this. In order to help you solve this problem, the following editor will explain it in detail. People with this need can come and learn. I hope you can get something.

1. Introduction

Today, I made the following error when I was running the ssh project, which caused me to visit the project page.

1.ApplicationEventMulticaster not initialized-call 'refresh' before multicasting events via the context: Root WebApplicationContext: startup date [Sat Jul 18 22:34:04 CST 2020]; root of context hierarchy.

2.LifecycleProcessor not initialized-call 'refresh' before invoking lifecycle methods via the context: Root WebApplicationContext: startup date [Sat Jul 18 22:34:04 CST 2020]; root of context hierarchy

two。 The screenshot is as follows

3. Cause analysis

The primary reason for this situation is that there is a problem with the connection to the database, that is, we have a problem with the url connection to dataSource in the spring configuration bean. Here's what I wrote:

Jdbc:mysql://localhost:3306/db_hotel?useUnicode=true&characterEncoding=utf-8

4. Later, it was changed to read:

Jdbc:mysql://localhost:3306/db_hoteluseUnicode=true&characterEncoding=utf-8

Yes, add & and you won't make a mistake and run the project successfully! As follows:

5. The project was run successfully

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