Spring复杂类型属性注入(XML)

• 实体类：

  CollectionBean.java
  package cn.jjs.c_injection;
  
  import java.util.Arrays;
  import java.util.List;
  import java.util.Map;
  import java.util.Properties;
  
  public class CollectionBean {
    private Object[] arr;
    private List list;
    private Map map;
    private Properties prop;
  
    public Object[] getArr() {
        return arr;
    }
  
    public void setArr(Object[] arr) {
        this.arr = arr;
    }
  
    public List getList() {
        return list;
    }
  
    public void setList(List list) {
        this.list = list;
    }
  
    public Map getMap() {
        return map;
    }
  
    public void setMap(Map map) {
        this.map = map;
    }
  
    public Properties getProp() {
        return prop;
    }
  
    public void setProp(Properties prop) {
        this.prop = prop;
    }
  
    @Override
    public String toString() {
        return "CollectionBean{" +
                "arr=" + Arrays.toString(arr) +
                ", list=" + list +
                ", map=" + map +
                ", prop=" + prop +
                '}';
    }
  }
  

• Array类型

  如果array数组中只注入一个值|对象，直接使用value|ref即可

  
  <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 name="user4" class="cn.jjs.c_injection.CollectionBean">
        <property name="arr" value="Tom">property>
    bean>
  beans>

  数组多个元素注入：

  
  <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 name="user" class="cn.jjs.bean.User">
        
        <property name="name" value="Tom">property>
        <property name="age" value="18">property>
        <property name="car" ref="carRef">property>
    bean>
  
    
    <bean name="carRef" class="cn.jjs.bean.Car">
        <property name="name" value="Toyota">property>
        <property name="color" value="white">property>
    bean>
  
  
    <bean name="user2" class="cn.jjs.bean.User" p:name="jack" p:age="30" p:car-ref="carRef">bean>
  
    <bean name="user3" class="cn.jjs.bean.User">
        <property name="name" value="#{user.name}">property>
        <property name="age" value="#{user2.age}">property>
        <property name="car" ref="carRef">property>
    bean>
  
    <bean name="cdd" class="cn.jjs.c_injection.CollectionBean">
        <property name="arr">
            <array>
                <value>Jerryvalue>
                <value>Tomvalue>
                <ref bean="user3"/>
            array>
        property>
    bean>
  beans>

• list类型

  list同array。

  <property name="list">
    <list>
        <value>Liutaovalue>
        <value>Hallevalue>
      <ref bean="user3"/>
  list>
  property>

• map类型

<property name="map">
    <map>
        
        <entry key="url" value="http://www.baidu.com">entry>
        
        <entry key="user" value-ref="user3">entry>
        
        <entry key-ref="user" value-ref="user2">entry>
    map>
property>

• properties类型

  <property name="prop">
    <props>
        <prop key="driveClass">com.jdbc.mysql.Driverprop>
        <prop key="username">rootprop>
        <prop key="password">1234prop>
    props>
  property>