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[Source] Springboot @Autowired fails to inject issues

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Posted on 1/8/2019 11:09:37 AM | | |
Special reminder: Be sure to pay attention to the file structure

The WebAppApplication must be at the outermost layer of the package, otherwise Spring will not be able to host all classes, which will cause @Autowired to fail to inject.

1. Add a tool class to get the beans hosted in Spring

(1) Tools

(2) Use

1) When the program starts, instantiate the SpringContextUtil

or
2) In the method using @Service, use SpringcontexUtil to get the bean context through @Autowired injection

When I am new to Java, I don't understand the principles very thoroughly, and I only record the problems I encounter, and modify them at any time as I learn deeper





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