spring的list 、set、map、properties等注入

Spring beans

 一个Customer对象，有四个集合属性。

package com.yiibai.common;

import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;

public class Customer 
{
  private List<Object> lists;
  private Set<Object> sets;
  private Map<Object, Object> maps;
  private Properties pros;
  
  //...
}

 在bean配置文件中不同的代码片段用来声明集合。

1. List示例
<property name="lists">
    <list>
      <value>1</value>
      <ref bean="PersonBean" />
      <bean class="com.yiibai.common.Person">
        <property name="name" value="yiibaiList" />
        <property name="address" value="Hainan" />
        <property name="age" value="28" />
      </bean>
    </list>
  </property>
2. Set示例
<property name="sets">
    <set>
      <value>1</value>
      <ref bean="PersonBean" />
      <bean class="com.yiibai.common.Person">
        <property name="name" value="yiibaiSet" />
        <property name="address" value="Hainan" />
        <property name="age" value="28" />
      </bean>
    </set>
  </property>
3. Map示例
<property name="maps">
    <map>
      <entry key="Key 1" value="1" />
      <entry key="Key 2" value-ref="PersonBean" />
      <entry key="Key 3">
        <bean class="com.yiibai.common.Person">
          <property name="name" value="yiibaiMap" />
          <property name="address" value="Hainan" />
          <property name="age" value="28" />
        </bean>
      </entry>
    </map>
  </property>
4. Properties示例
<property name="pros">
    <props>
      <prop key="admin">[e-mail]</prop>
      <prop key="support">[e-mail]</prop>
    </props>
  </property>

 Spring完整的 bean 配置文件。

<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-2.5.xsd">

  <bean id="CustomerBean" class="com.yiibai.common.Customer">

    <!-- java.util.List -->
    <property name="lists">
      <list>
        <value>1</value>
        <ref bean="PersonBean" />
        <bean class="com.yiibai.common.Person">
          <property name="name" value="yiibaiList" />
          <property name="address" value="Hainan Haikou" />
          <property name="age" value="28" />
        </bean>
      </list>
    </property>

    <!-- java.util.Set -->
    <property name="sets">
      <set>
        <value>1</value>
        <ref bean="PersonBean" />
        <bean class="com.yiibai.common.Person">
          <property name="name" value="yiibaiSet" />
          <property name="address" value="Hainan Haikou" />
          <property name="age" value="28" />
        </bean>
      </set>
    </property>

    <!-- java.util.Map -->
    <property name="maps">
      <map>
        <entry key="Key 1" value="1" />
        <entry key="Key 2" value-ref="PersonBean" />
        <entry key="Key 3">
          <bean class="com.yiibai.common.Person">
            <property name="name" value="yiibaiMap" />
            <property name="address" value="Hainan Haikou" />
            <property name="age" value="28" />
          </bean>
        </entry>
      </map>
    </property>

    <!-- java.util.Properties -->
    <property name="pros">
      <props>
        <prop key="admin">[e-mail]</prop>
        <prop key="support">[e-mail]</prop>
      </props>
    </property>

  </bean>

  <bean id="PersonBean" class="com.yiibai.common.Person">
    <property name="name" value="yiibai1" />
    <property name="address" value="Hainan Haikou 1" />
    <property name="age" value="28" />
  </bean>

</beans>