在本文中，主要介紹的知識點有以下三個
ListFactoryBeanSetFactoryBeanMapFactoryBean現項目中存在一個實體類，將用于以下三個例子的演示 HelloWorld.java
public class HelloWorld{ private List list; private Set set; private Map map; //.....}ListFactoryBean示例 在spring bean配置文件中
<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="HelloWorld" class="com.main.HelloWorld"> <property name="list"> <bean class="org.springframework.beans.factory.config.ListFactoryBean"> <property name="targetListClass"> <value>java.util.ArrayList</value> </property> <property name="sourceList"> <list> <value>hello</value> <value>1</value> <value>three</value> </list> </property> </bean> </property> </bean></beans>還可以使用下方式:
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:util="http://www.springframework.org/schema/util" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.5.xsd"> <bean id="CustomerBean" class="com.yiibai.common.Customer"> <property name="list"> <util:list list-class="java.util.ArrayList"> <value>Hello</value> <value>1</value> <value>three</value> </util:list> </property> </bean></beans>如果你不把util：list模式包含進配置文件中：或許會出現以下錯誤：
Caused by: org.xml.sax.SAXParseException: The prefix "util" for element "util:list" is not bound.SetFactoryBean實例
<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="HelloWorld" class="com.main.HelloWorld"> <property name="set"> <bean class="org.springframework.beans.factory.config.SetFactoryBean"> <property name="targetSetClass"> <value>java.util.HashSet</value> </property> <property name="sourceSet"> <list> <value>one</value> <value>2</value> <value>three</value> </list> </property> </bean> </property> </bean></beans>也可以使用以下模式：
<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="HelloWorld" class="com.main.HelloWorld"> <property name="set"> <util:set set-class="java.util.HashSet"> <value>one</value> <value>2</value> <value>three</value> </util:set> </property> </bean></beans>MapFactoryBean實例
<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="HelloWorld" class="com.main.HelloWorld"> <property name="map"> <bean class="org.springframework.beans.factory.config.MapFactoryBean"> <property name="targetMapClass"> <value>java.util.HashMap</value> </property> <property name="sourceMap"> <map> <entry key="Key1" value="one" /> <entry key="Key2" value="two" /> <entry key="Key3" value="three" /> </map> </property> </bean> </property> </bean></beans>也可以使用以下方式：
<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="HelloWorld" class="com.main.HelloWorld"> <property name="map"> <util:map map-class="java.util.HashMap"> <entry key="Key1" value="1" /> <entry key="Key2" value="2" /> <entry key="Key3" value="3" /> </util:map> </property> </bean></beans>新聞熱點
疑難解答
