Spring - Injecting Collection

Listing 5: SpringBean.java

<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.collection.core.CustomerBean">

               <!-- java.util.List -->

               <property name="lists">

                       <list>

                               <value>1</value>

                               <ref bean="PersonBean" />

                               <bean class="com.collection.core.PersonBean">

                                      <property name="name" value="UmeshList" />

                                      <property name="address" value="address" />

                                      <property name="age" value="28" />

                               </bean>

                       </list>

               </property>

               <!-- java.util.Set -->

               <property name="sets">

                       <set>

                               <value>1</value>

                               <ref bean="PersonBean" />

                               <bean class="com.collection.core.PersonBean">

                                      <property name="name" value="UmeshSet" />

                                      <property name="address" value="address" />

                                      <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.collection.core.PersonBean">

                                              <property name="name" value="UmeshMap" />

                                              <property name="address" value="address" />

                                              <property name="age" value="28" />

                                      </bean>

                               </entry>

                       </map>

               </property>

               <!-- java.util.Properties -->

               <property name="pros">

                       <props>

                               <prop key="admin">admin@nospam.com</prop>

                               <prop key="support">support@nospam.com</prop>

                       </props>

               </property>

        </bean>

        <bean id="PersonBean" class="com.collection.core.PersonBean">

               <property name="name" value="Umesh" />

               <property name="address" value="address 1" />

               <property name="age" value="28" />

        </bean>

</beans>

The above listing defines SpringBean.xml file to configure collection injection for CustomerBean class using PersonBean class. It defines four PersonBean type beans for four different type of collection tags <list>, <map>, <set> and <props>.