Spring自动装配歧义性笔记 如果系统中存在两个都实现了同一接口的类,Spring在进行@Autowired自动装配的时候,会选择哪一个?如下: // 一下两个类均被标记为bean @Component public class CD implements Playable { @Override public void play() { System.out.println("CD is playing..."); } } @Component public class Video
Spring自动装配----注解装配----Spring自带的@Autowired注解 父类 package cn.ychx; public interface Person { public void sayHello(); } 学生子类 package cn.ychx; public class Student implements Person { @Override public void sayHello() { System.out.println("Hello! My name i
一.属性自动装配 首先,准备三个类,分别是User,Cat,Dog.其中User属性拥有Cat和Dog对象. package com.hdu.autowire; public class User { private Cat cat; private Dog dog; private String str; public Cat getCat() { return cat; } public void setCat(Cat cat) { this.cat = cat; } public Dog