Java 带构造函数的自动连接，IOC将如何在多个构造函数中选择构造函数

我有三颗豆子：电影、导演、英雄

电影豆：

public class Movie {

    private Director director;
    private String name;

    private Hero hero;

    public Movie(Director director, Hero hero) {
        System.out.println("m1");
        this.director = director;
        this.name = name;
        this.hero = hero;
    }

    public Movie(Director director, String name) {
        System.out.println("m2");
        this.director = director;
        this.name = name;
    }

    public Movie(Director director) {
        System.out.println("m3");
        this.director = director;
    }

    public Movie() {
        System.out.println("m4");
    }
}

public class Director {

}

public class Hero {

}

导演和英雄豆：

public class Movie {

    private Director director;
    private String name;

    private Hero hero;

    public Movie(Director director, Hero hero) {
        System.out.println("m1");
        this.director = director;
        this.name = name;
        this.hero = hero;
    }

    public Movie(Director director, String name) {
        System.out.println("m2");
        this.director = director;
        this.name = name;
    }

    public Movie(Director director) {
        System.out.println("m3");
        this.director = director;
    }

    public Movie() {
        System.out.println("m4");
    }
}

public class Director {

}

public class Hero {

}

spring core.xml

<bean id="movieBean" class="Movie" autowire="constructor" />

<bean id="directorBean" class="Director"></bean>
<bean id="heroBean" class="Hero"></bean>

输出是“m1”，即调用的构造函数是

电影（导演、英雄）

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我的问题是：为什么只调用这个构造函数，以及如果我们使用构造函数自动连接，在注入依赖项时，IOC容器将如何在多个构造函数中进行选择。这与创建一个新对象时只调用一个构造函数的方式类似（如果您想真正做到精确，可以链接调用此构造函数的构造函数）

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在本例中，将使用具有大多数参数的构造函数，这些参数可由上下文中可用的其他bean满足。

Gangadhar链接到我所要求的确切线程：