Spring other types of injection

In the <property>element , use the following elements to configure the properties and parameters of Java collection types, such as List, Set, Map, and Properties, etc.

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OtherType class

public class OtherType {
    
    
    /*数组类型*/
    private String[] arr;
    /*list集合类型*/
    private List<String> list;
    /*map集合类型*/
    private Map<String,String> map;
    /*set集合类型*/
    private Set<String> set;

    public void setArr(String[] arr) {
    
    
        this.arr = arr;
    }

    public void setList(List<String> list) {
    
    
        this.list = list;
    }

    public void setMap(Map<String, String> map) {
    
    
        this.map = map;
    }

    public void setSet(Set<String> set) {
    
    
        this.set = set;
    }

    @Override
    public String toString() {
    
    
        return "OtherType{" +
                "arr=" + Arrays.toString(arr) +
                ", list=" + list +
                ", map=" + map +
                ", set=" + set +
                '}';
    }
}

spring.xml

<bean id="otherType" class="com.liu.c.OtherType">
   <!--数组-->
   <property name="arr">
       <array>
           <value>Java</value>
           <value>PHP</value>
           <value>C语言</value>
       </array>
   </property>
   <!--list-->
   <property name="list">
       <list>
           <value>小张</value>
           <value>小刘</value>
       </list>
   </property>
   <!--map-->
   <property name="map">
       <map>
           <entry key="Java" value="java"></entry>
           <entry key="PHP" value="php"></entry>
       </map>
   </property>
   <!--set-->
   <property name="set">
       <set>
           <value>MySQL</value>
           <value>Redis</value>
       </set>
   </property>
</bean>

Test test

public class TestOtherType {
    
    
    public static void main(String[] args) {
    
    
        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("spring.xml");
        OtherType otherType = context.getBean("otherType", OtherType.class);
        System.out.println(otherType);
    }
}

As a result, successful injection

OtherType{
arr=[Java, PHP, C语言], 
list=[小张, 小刘], 
map={Java=java, PHP=php}, 
set=[MySQL, Redis]}

If the property to be injected is of object type, use ref