1、疑问

文章一说了怎么导入Spring的源码，但是怎么调试呢？

我是通过创建项目，写Spring应用示例，在Spring 的jar包中打断点进行源码分析的。

2、创建maven工程

pom.xml 引入依赖

    <properties>
        <!-- Spring 3.x 最新发布版本 -->
        <!--<spring.version>3.2.18.RELEASE</spring.version>-->
        <!-- Spring Framework 5.0 最新的版本 -->
        <spring.version>5.0.6.RELEASE</spring.version>
    </properties>

    <dependencies>

        <!-- Spring 5.0 最新发布版本 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
        </dependency>

        <!-- Spring 5 索引依赖 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-indexer</artifactId>
            <version>${spring.version}</version>
            <optional>true</optional>
        </dependency>

    </dependencies>

创建User实体类

public class User {
    private int id;
    private String name;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", name='" + name + '\'' +
                '}';
    }
}

创建Spring配置文件

<?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">

    <bean id="user" class="thinking.in.spring.boot.samples.spring5.bean.User">
        <property name="name" value="zhangsan"/>
        <property name="id" value="1"/>
    </bean>
</beans>

创建Spring引导类

public class XmlBeanFactoryBootstrap {

    public static void main(String[] args) {
        DefaultListableBeanFactory defaultListableBeanFactory = new XmlBeanFactory(new ClassPathResource("application-context.xml"));
        User user = defaultListableBeanFactory.getBean(User.class);
        System.out.println(user);
    }
}