Spring IOC源码分析（5.1.4版本）①

创建一个简单的IOC项目来跟踪源码

首先配置spring的依赖环境：

    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.1.4.RELEASE</version>
        </dependency>
    </dependencies>

然后定义一个接口及其实现类：

public interface OrderService {
    public void initOrder(int uid);
}

public class OrderServiceImpl implements OrderService {

    public OrderServiceImpl() {
        super();
        // TODO Auto-generated constructor stub
    }

    @Override
    public void initOrder(int uid) {
        // TODO Auto-generated method stub
        System.out.println("initOrder method invoke");
    }
}

接下来还需要创建一个spring的配置文件:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://www.springframework.org/schema/beans"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
    <bean id="orderService"
        class="tech.lazyrabbit.dubbotest.service.impl.OrderServiceImpl"></bean>
</beans>

最后使用ClassPathXmlApplicationContext来启动spring容器：

    public static void main(String[] args) {
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("consumer.xml");
        OrderService orderService = (OrderService) context.getBean("orderService");
        orderService.initOrder(1);
    }

到这里，我们就可以启动这个项目，然后一步一步的DEBUG去学习源码了。