Spring配置文件中注入複雜類型屬性

Spring在整合其餘框架時在配置文件中可能會涉及到複雜類型屬性的注入，如下舉例說明：

1.數組類型

2.List集合類型

3.Set集合類型

4.Map集合類型

5.Properties屬性類型

直接上代碼：

實體類：CollectionBean.java

package com.imooc.ioc.demo5; import java.util.*; /** * Spring複雜類型的集合注入 */
public class CollectionBean { private String[] arrs;  //數組類型

    private List<String> list; //list類型

    private Set<String> set; //set類型

    private Map<String , Integer> map; //map類型

    private Properties properties; //屬性類型

    public String[] getArrs() { return arrs; } public void setArrs(String[] arrs) { this.arrs = arrs; } public List<String> getList() { return list; } public void setList(List<String> list) { this.list = list; } public Set<String> getSet() { return set; } public void setSet(Set<String> set) { this.set = set; } public Map<String, Integer> getMap() { return map; } public void setMap(Map<String, Integer> map) { this.map = map; } public Properties getProperties() { return properties; } public void setProperties(Properties properties) { this.properties = properties; } @Override public String toString() { return "CollectionBean{" +
                "arrs=" + Arrays.toString(arrs) +
                ", list=" + list +
                ", set=" + set +
                ", map=" + map +
                ", properties=" + properties +
                '}'; } }

 

配置文件：applicationContext.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.xsd">

    <bean id="collectionBean" class="com.imooc.ioc.demo5.CollectionBean">
        <!--數組類型注入-->
        <property name="arrs">
            <list>
                <value>111</value>
                <value>222</value>
                <value>333</value>
            </list>
        </property>

        <!--list類型注入-->
        <property name="list">
            <list>
                <value>aaa</value>
                <value>bbb</value>
                <value>ccc</value>
            </list>
        </property>

        <!--set類型注入-->
        <property name="set">
            <set>
                <value>ddd</value>
                <value>eee</value>
                <value>fff</value>
            </set>
        </property>

        <!--map類型注入-->
        <property name="map">
            <map>
                <entry key="aaa" value="111"></entry>
                <entry key="bbb" value="222"></entry>
                <entry key="ccc" value="333"></entry>
            </map>
        </property>

        <!--properties類型注入-->
        <property name="properties">
            <props>
                <prop key="aaa">555</prop>
                <prop key="bbb">666</prop>
                <prop key="ccc">777</prop>
            </props>
        </property>
    </bean>
</beans>

 

測試類：SpringDemo5.java

package com.imooc.ioc.demo5; import org.junit.Test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class SpringDemo5 { @Test public void demo1(){ ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml"); CollectionBean collectionContext = (CollectionBean)applicationContext.getBean("collectionBean"); System.out.println(collectionContext); } }

測試類輸出結果：