注入集合对象：保存多数据的类型，如何在SpringIoC中，进行动态注入
List 和 Set的区别是：
-
list-->允许元素重复
-
Set-->不允许元素重复（自动去重）
Map和Properties的区别是：
Properties-->key和value只能是字符串类型数据
Map--> value 可以应用其它对象
栗子
public class Company {
private Set<String> rooms;
private Map<String,Calculator> calculatorMap;
private Properties info;
}
public class Calculator {
private String brand;
private String type;
private String sn;
private Float price ;
}
<?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.xsd">
<!-- <bean id="calculator" class="top.xiongmingcai.ioc.entity.Calculator">
<constructor-arg name="brand" value="联想机"/>
<constructor-arg name="type" value="台式机"/>
<constructor-arg name="sn" value="234234"/>
<constructor-arg name="price" value="3085"/>
</bean>-->
<bean id="company" class="top.xiongmingcai.ioc.entity.Company">
<property name="rooms">
<set>
<value>2001-总裁办</value>
<value>2002-总经理办公室</value>
<value>2010-研发部会议室</value>
<value>2010-研发部会议室</value>
</set>
</property>
<property name="calculatorMap">
<map>
<entry key="dev-8848">
<bean class="top.xiongmingcai.ioc.entity.Calculator">
<constructor-arg name="brand" value="联想机"/>
<constructor-arg name="type" value="台式机"/>
<constructor-arg name="sn" value="234234"/>
<constructor-arg name="price" value="3085"/>
</bean>
</entry>
</map>
</property>
<property name="info">
<props>
<prop key="phone">010-12348848</prop>
<prop key="address">长沙市芙蓉区</prop>
<prop key="website">www.xiongmingcai.top</prop>
</props>
</property>
</bean>
</beans>
Company company = context.getBean("company", Company.class);
String website = company.getInfo().getProperty("website");
String jsonString = JSON.toJSONString(company);
{
"calculatorMap": {
"dev-8848": {
"brand": "联想机",
"price": 3085.0,
"sn": "234234",
"type": "台式机"
}
},
"info": {
"phone": "010-12348848",
"address": "长沙市芙蓉区",
"website": "www.xiongmingcai.top"
},
"rooms": ["2001-总裁办", "2002-总经理办公室", "2010-研发部会议室"]
}