What are the three ways of spring injection?

The three methods of spring injection are constructor injection, Setter method injection, and interface injection. Detailed introduction: 1. Constructor injection: Inject dependencies through the constructor, that is, pass in the instance of the dependency in the constructor of the class; 2. Setter method injection: Inject dependencies through the Setter method of the class, that is, in the class Define the Setter method in the configuration file, and then set the instance of the dependency in the configuration file; 3. Interface injection: implement the interface through the class, and then set the instance of the dependency in the configuration file.

Operating system for this tutorial: Windows 10 system, Dell G3 computer.

The three ways of Spring injection include:

1. Constructor injection: Inject dependencies through the constructor, that is, in the constructor of the class Instances of dependencies passed in.

2. Setter method injection: Inject dependencies through the Setter method of the class, that is, define the Setter method in the class, and then set the instance of the dependency in the configuration file.

3. Interface injection: implement the interface through the class, and then set the instance of the dependency in the configuration file. This approach is typically used to inject dependencies of interface types rather than concrete implementation classes.

The above is the detailed content of What are the three ways of spring injection?. For more information, please follow other related articles on the PHP Chinese website!