Spring的复杂注入，数组注入、list/set注入、map注入、properties注入

末蓝、 2022-05-21 10:11 278阅读 0赞

**这里面也没什么好解释的了，主要是熟悉代码就好了。下面直接给出代码**

### 1、实体代码 ###

package spring.injection;
    
    import java.util.Arrays;
    import java.util.List;
    import java.util.Map;
    import java.util.Properties;
    
    public class CollectionBean {
    	private Object[] arr;	//数据类型注入
    	private List list;		//list/set 类型注入
    	private Map map;		//map类型注入
    	private Properties prop;//Properties类型注入
    	
    	
    	public Object[] getArr() {
    		return arr;
    	}
    	public CollectionBean() {
    		super();
    	}
    	public void setArr(Object[] arr) {
    		this.arr = arr;
    	}
    	public List getList() {
    		return list;
    	}
    	public void setList(List list) {
    		this.list = list;
    	}
    	public Map getMap() {
    		return map;
    	}
    	public void setMap(Map map) {
    		this.map = map;
    	}
    	public Properties getProp() {
    		return prop;
    	}
    	public void setProp(Properties prop) {
    		this.prop = prop;
    	}
    	@Override
    	public String toString() {
    		return "CollectionBean [arr=" + Arrays.toString(arr) + ", list=" + list + ", map=" + map + ", prop=" + prop
    				+ "]";
    	}
    	
    }

## 2、applicationContext.xml配置 ##

<?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-4.2.xsd ">
    	
    	<bean name="user" class="spring.bean.User" >
    			
    		<property name="name" value="aa"></property>
    		<property name="age" value="16"></property>
    	</bean>
    	
    	
    	
    	
    	<bean name="a" class="spring.injection.CollectionBean">
    		
    		
    		<property name="arr">
    			<array>
    				<value>tom</value>
    				<value>jerrt</value>
    				<ref bean="user"/>
    			</array>
    			
    		</property>
    		
    		
    		
    		
    		<property name="list">
    			<list>
    				<value>tom</value>
    				<value>jerrt</value>
    				<ref bean="user"/>
    			</list>
    		
    		</property>
    		
    		
    		
    		<property name="map">
    			<map>
    				<entry key="123" value="abc"></entry>
    				<entry key="user1" value-ref="user"></entry>
    			</map>
    		
    		</property>
    		
    		
    		
    		<property name="prop">
    			<props>
    				<prop key="qwe">asd</prop>
    			</props>
    		
    		</property>
    	
    	</bean>
    </beans>

## 3、测试 ##

package spring.injection;
    
    import org.junit.Test;
    import org.springframework.context.ApplicationContext;
    import org.springframework.context.support.ClassPathXmlApplicationContext;
    
    import spring.bean.User;
    
    public class Demo1 {
    	
    	
    	@Test
    	public void fun1(){
    		
    		//1、创建容器对象
    		ApplicationContext ac = new ClassPathXmlApplicationContext("spring/injection/applicationContext2.xml");
    		
    		//2、向容器要对象
    		CollectionBean u = (CollectionBean) ac.getBean("a");
    		
    		
    		System.out.println(u);
    		
    	}
    }