Spring如何装配各种集合类型的属性

最新推荐文章于 2025-08-05 16:08:17 发布

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最新推荐文章于 2025-08-05 16:08:17 发布

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分类专栏： spring 文章标签： spring properties string class bean list

本文链接：https://blog.youkuaiyun.com/tianyulinger3344/article/details/7576355

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本文介绍如何在Spring框架中进行集合类型的依赖注入，包括List、Set、Map和Properties等类型的使用方法，并通过具体示例展示了不同集合类型的配置过程。

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集合类型的装配

public class TestBean{
private Set<String> set = new HashSet<String>();
private List<String> list = new ArrayList<String>();
private Properties properties = new Properties();
private Map<String,String> map = new HashMap<String,String>();
...此处省略 setters 和 getters 方法
}
http://krcjwj.iteye.com/blog/401226

也可以注入集合中的类类型
package 集合类注入;
package com.IOC;
public class Address {

private String zipCode;
public String getZipCode() {
return zipCode;
}
public void setZipCode(String zipCode) {
this.zipCode = zipCode;
}

public String toString(){
return zipCode;
}
}
package 集合类注入;
package com.IOC;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
public class Company {
private String name;
private List<Address> list;
private Set<Address> set;
private Map<String,Address> map;
private Properties prop;

public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public List<Address> getList() {
return list;
}
public void setList(List<Address> list) {
this.list = list;
}
public Set<Address> getSet() {
return set;
}
public void setSet(Set<Address> set) {
this.set = set;
}
public Map<String, Address> getMap() {
return map;
}
public void setMap(Map<String, Address> map) {
this.map = map;
}
public Properties getProp() {
return prop;
}
public void setProp(Properties prop) {
this.prop = prop;
}

}
<?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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="address1" class="com.IOC.Address">
<property name="zipCode" value="天津分公司"/>
</bean>

<bean id="address2" class="com.IOC.Address">
<property name="zipCode" value="北京总公司"/>
</bean>

<bean id="address3" class="com.IOC.Address">
<property name="zipCode" value="上海分公司"/>
</bean>

<bean id="company" class="com.IOC.Company">
<property name="name" value="中国科技有限公司"></property>
<property name="list">
<list>
<ref bean="address2"/>
<ref bean="address1"/>
</list>
</property>
<property name="set">
<set>
<ref bean="address2"/>
<ref bean="address3"/>
</set>
</property>

<property name="map">
<map>
<entry key="地址1" value-ref="address2"></entry>
<entry key="地址2" value-ref="address1"></entry>
<entry key="地址3" value-ref="address3"></entry>
</map>
</property>

<property name="prop">
<props>
<prop key="错误地址">地址已更改,请到网上查询!</prop>
</props>
</property>
</bean>
</beans>
package 集合类注入;
package com.IOC;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Test {
public static void main(String[] args) {
ApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContext.xml");
Company com=(Company) ctx.getBean("company");

System.out.println(com.getName()+"地址"+com.getList());
System.out.println(com.getName()+"地址"+com.getSet());
System.out.println(com.getName()+"地址"+com.getMap());
System.out.println(com.getName()+"地址"+com.getProp());

}
}