Spring之集合属性注入

朱雀 2022-05-14 20:34 246阅读 0赞

1.xml文件配置

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
    	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
    	xmlns:context="http://www.springframework.org/schema/context"
    	xsi:schemaLocation="
            http://www.springframework.org/schema/beans
            http://www.springframework.org/schema/beans/spring-beans.xsd
            http://www.springframework.org/schema/context
            http://www.springframework.org/schema/context/spring-context.xsd">
    
    	<bean id="user" class="com.yj.spring.collection.User">
    		<property name="name" value="yj"></property>
    
    		<property name="addressArray">
    			<list>
    				
    				<ref bean="newlandComputer" />
    				<ref bean="netWorkStart" />
    			</list>
    		</property>
    
    		<property name="addressList">
    			<list>
    				
    				<ref bean="newlandComputer" />
    				<ref bean="netWorkStart" />
    			</list>
    		</property>
    
    
    		<property name="addressSet">
    			<set>
    				
    				<ref bean="newlandComputer" />
    				<ref bean="netWorkStart" />
    			</set>
    		</property>
    		
    		<property name="addressMap">
    			<map>
    				
    				<entry key="newlandComputer" value-ref="newlandComputer" />
    				<entry key="netWorkStart" value-ref="netWorkStart" />
    			</map>
    		</property>
    
    		<property name="addressProp">
    			<props>
    				<prop key="newlandComputer">NewlandComputer</prop>
    				<prop key="netWorkStart">NetWorkStart</prop>
    			</props>
    		</property>
    	</bean>
    
    	<bean id="newlandComputer" class="com.yj.spring.collection.Address">
    		<property name="detail" value="NewlandComputer" />
    	</bean>
    
    	<bean id="netWorkStart" class="com.yj.spring.collection.Address">
    		<property name="detail" value="NetWorkStart" />
    	</bean>
    </beans>

2.User对象

package com.yj.spring.collection;
    
    import java.util.Arrays;
    import java.util.List;
    import java.util.Map;
    import java.util.Properties;
    import java.util.Set;
    
    public class User {
    	private String name;
    	private Address[] addressArray;
    	private List<Address> addressList;
    	private Set<Address> addressSet;
    	private Map<String,Address> addressMap;
    	private Properties addressProp;
    	public String getName() {
    		return name;
    	}
    	public void setName(String name) {
    		this.name = name;
    	}
    	public List<Address> getAddressList() {
    		return addressList;
    	}
    	public void setAddressList(List<Address> addressList) {
    		this.addressList = addressList;
    	}
    	public Set<Address> getAddressSet() {
    		return addressSet;
    	}
    	public void setAddressSet(Set<Address> addressSet) {
    		this.addressSet = addressSet;
    	}
    	public Map<String, Address> getAddressMap() {
    		return addressMap;
    	}
    	public void setAddressMap(Map<String, Address> addressMap) {
    		this.addressMap = addressMap;
    	}
    	public Properties getAddressProp() {
    		return addressProp;
    	}
    	public void setAddressProp(Properties addressProp) {
    		this.addressProp = addressProp;
    	}
    	public Address[] getAddressArray() {
    		return addressArray;
    	}
    	public void setAddressArray(Address[] addressArray) {
    		this.addressArray = addressArray;
    	}
    	@Override
    	public String toString() {
    		return "User [name=" + name + ", addressArray=" + Arrays.toString(addressArray) + ", addressList=" + addressList
    				+ ", addressSet=" + addressSet + ", addressMap=" + addressMap + ", addressProp=" + addressProp + "]";
    	}
    }

3.Address对象

package com.yj.spring.collection;
    
    public class Address {
    	private String detail;
    
    	public String getDetail() {
    		return detail;
    	}
    
    	public void setDetail(String detail) {
    		this.detail = detail;
    	}
    
    	@Override
    	public String toString() {
    		return "Address [detail=" + detail + "]";
    	}
    }

4.验证

@Test
    public void Test() {
    	ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("Collection.xml");
    	User user = ctx.getBean(User.class);
    	System.out.println(user);
    }

5.结果

User [name=yj, addressArray=[Address [detail=NewlandComputer], Address [detail=NetWorkStart]], addressList=[Address [detail=NewlandComputer], Address [detail=NetWorkStart]], addressSet=[Address [detail=NewlandComputer], Address [detail=NetWorkStart]], addressMap={newlandComputer=Address [detail=NewlandComputer], netWorkStart=Address [detail=NetWorkStart]}, addressProp={netWorkStart=NetWorkStart, newlandComputer=NewlandComputer}]