Process analysis of spring IOC injection mode

Time:2020-7-30

This article mainly introduces the process analysis of spring IOC injection mode, the article introduces in detail through the example code, which has certain reference learning value for everyone’s study or work, and friends in need can refer to it

There are two main methods for spring IOC injection

1: Set value injection

2: Structural injection

In short, one is to call the set method to set the value, and the other is to set the value through the constructor

Spring-ioc.xml


<?xml version= "1.0" encoding= "UTF-8"?>
<beans xmlns= "http://www.springframework.org/schema/beans"
xmlns:xsi= "http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation= "http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd"
default-init-method= "init" default-destroy-method= "destroy">
<!-- 
<bean>
<property name="injectionDAO" ref="InjectionDAO"></property>
 </bean>
 -->
 <bean>
<constructor-arg name="injectionDAO" ref="InjectionDAO"></constructor-arg>
 </bean>
<bean class= "Main.InjectionDAOImpl"> </bean>

</beans>

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