标签：bubuko gap tree coding ops 属性 instance name return
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学习地址：https://www.w3cschool.cn/wkspring/kp5i1ico.html
在前面使用了使用<property>标签的ref属性来配置对象，value属性来配置基本数据类型。如果想传递多个值，如Java Collection类型的List、Set、Map、Properties。
List：注入一组值，允许重复
Set：注入一组值，不能重复
Map：注入键值对的集合，其键和值可以是任何类型
Props：注入键值对的集合，其键和值都是字符串类型
例子：
JavaCollection.java：
package com.lee.four; import java.util.List; import java.util.Map; import java.util.Properties; import java.util.Set; public class JavaCollection { List addressList; Set addressSet; Map addressMap; Properties addressProp; public List getAddressList() { System.out.println("List Elements："+ addressList); return addressList; } public void setAddressList(List addressList) { this.addressList = addressList; } public Set getAddressSet() { System.out.println("Set Elementes: " + addressSet); return addressSet; } public void setAddressSet(Set addressSet) { this.addressSet = addressSet; } public Map getAddressMap() { System.out.println("Map Elements: " + addressMap); return addressMap; } public void setAddressMap(Map addressMap) { this.addressMap = addressMap; } public Properties getAddressProp() { System.out.println("Prop Elements: " + addressProp); return addressProp; } public void setAddressProp(Properties addressProp) { this.addressProp = addressProp; } }
MainApp.java：
package com.lee.four; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class MainApp { public static void main(String[] args) { ApplicationContext context = new ClassPathXmlApplicationContext("Beans4.xml"); JavaCollection jc = (JavaCollection) context.getBean("javacollections"); jc.getAddressList(); jc.getAddressSet(); jc.getAddressMap(); jc.getAddressProp(); } }
Beans4.xml：
<?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-3.0.xsd"> <bean id="javacollections" class="com.lee.four.JavaCollection"> <property name="addressList" > <list> <value>INDIA</value> <value>SINGAPO</value> <value>USA</value> <value>BJIK</value> </list> </property> <property name="addressSet"> <set> <value>INDIA</value> <value>SINGAPO</value> <value>USA</value> <value>USA</value> </set> </property> <property name="addressMap"> <map> <entry key="1" value="INDIA"/> <entry key="2" value="SINGAPO"/> <entry key="3" value="USA"/> <entry key="4" value="BJIK"/> </map> </property> <property name="addressProp"> <props> <prop key="one">INDIA</prop> <prop key="two">SINGAPO</prop> <prop key="three">USA</prop> <prop key="four">BJIK</prop> </props> </property> </bean> </beans>
码云： https://gitee.com/lemon_le/w3-Spring/tree/master/DI
标签：bubuko gap tree coding ops 属性 instance name return
原文地址：https://www.cnblogs.com/lemon-le/p/9311561.html
