spring list、map注入

最新推荐文章于 2024-11-24 23:38:50 发布

转载最新推荐文章于 2024-11-24 23:38:50 发布 · 71 阅读

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原文链接：http://www.cnblogs.com/qiutianyou/p/6242633.html

本文详细介绍了如何使用Spring框架进行各种类型的集合注入，包括数组、List、Set和Map等，并提供了具体的XML配置示例。

<?xml version="1.0" encoding="utf-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:context="http://www.springframework.org/schema/context"
        xmlns:tx="http://www.springframework.org/schema/tx"
        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
                http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
                http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">

<bean id="department" class="com.hsp.collection.Department">
<property name="name" value="财务部"/>

<!-- 给数组注入值 -->
<property name="empName">
    <list>
        <value>a</value>
        <value>b</value>
        <value>c</value>
    </list>
</property>

<!-- 给list注入值 list 中可以有相当的对象 -->
<property name="empList">
    <list>
        <ref bean="emp2" />
        <ref bean="emp1"/>
        <ref bean="emp1"/>
        <ref bean="emp1"/>
        <ref bean="emp1"/>
        <ref bean="emp1"/>
        <ref bean="emp1"/>
    </list>
</property>

<!-- 给set注入值 set不能有相同的对象 -->
<property name="empsets">
    <set>
        <ref bean="emp1" />
        <ref bean="emp2"/>
        <ref bean="emp2"/>
        <ref bean="emp2"/>
        <ref bean="emp2"/>
    </set>
</property>

<!-- 给map注入值 map只有key不一样，就可以装配value -->
<property name="empMaps">
    <map>
        <entry key="11" value-ref="emp1" /> 
        <entry key="22" value-ref="emp2"/>
        <entry key="22" value-ref="emp1"/>
    </map>
</property>

<!-- 给属性集合配置 -->
<property name="pp">
    <props>
        <prop key="pp1">abcd</prop>
        <prop key="pp2">hello</prop>
    </props>
</property>
</bean>

<bean id="emp1" class="com.hsp.collection.Employee">
    <property name="name" value="北京"/>
    <property name="id" value="1"/>
</bean>
<bean id="emp2" class="com.hsp.collection.Employee">
    <property name="name" value="天津"/>
    <property name="id" value="2"/>
</bean>

</beans>

转载于:https://www.cnblogs.com/qiutianyou/p/6242633.html