Spring property Injection Method

Spring property Injection Method

Spring has three types of property injection:

1. setter Injection

2. constructor Injection

3. annotation injection:

① Java annotation ② spring annitation

Java annotation in the third type is the recommended method.

The following describes how to use these injection methods one by one:

Step for setter injection:

① First, create the set Method of the attribute in the class with the attribute.

② Use the property tag in the configuration file for injection.

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Annotation injection steps:① Support for annotation Injection

② Add comments before the attribute; java annotation form
③ Add comments before attributes; Spring annotation form