Annotation-Based Configuration Beans for Ioc Container

红太狼 2024-03-01 03:23 42阅读 0赞

### **[Java-Based Configuration Beans for Ioc Container][]**   **[Annotation-Based Configuration Beans for Ioc Container][]**   **[XML-Based Configuration Beans for Ioc Container][]** ###

## Annotation-Based Configuration ##

Spring **`2.5`** introduced **`annotation-based configuration`** as the first step to enable bean configurations in Java.

#  via XML configuration
    <?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xmlns:context="http://www.springframework.org/schema/context"
      xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd">
      
      <context:annotation-config/>
      <context:component-scan base-package="com.annotationconfigvscomponentscan.components" />
    
    </beans>

Further Reading： **[context:annotation-config 和 context:component-scan 介绍][context_annotation-config _ context_component-scan]**

--------------------

# In a Spring Application
    @Configuration
    @ComponentScan
    public class SpringComponentScanApp {
        
    
    @ComponentScan(basePackages = "com.componentscan.springapp.animals")
    @Configuration
    public class SpringComponentScanApp {

# In a SpringBoot Application
    @SpringBootApplication
    public class SpringBootComponentScanApp {
        
    
    @SpringBootApplication
    @ComponentScan(basePackages = "com.componentscan.springbootapp.animals")
    public class SpringBootComponentScanApp {

Further Reading： **[Spring Component Scanning][]**

[Java-Based Configuration Beans for Ioc Container]: https://blog.csdn.net/weixin_37646636/article/details/133383857
[Annotation-Based Configuration Beans for Ioc Container]: https://blog.csdn.net/weixin_37646636/article/details/133281705
[XML-Based Configuration Beans for Ioc Container]: https://blog.csdn.net/weixin_37646636/article/details/133384129
[context_annotation-config _ context_component-scan]: https://blog.csdn.net/weixin_37646636/article/details/129575494
[Spring Component Scanning]: https://blog.csdn.net/weixin_37646636/article/details/129598990