spring configuration for map

Appendix A. XML Schema-based configuration

A.2.2.5. <util:map/>

Before...

<!-- creates a java.util.Map instance with values loaded from the supplied 'sourceMap' -->
<bean id="emails" class="org.springframework.beans.factory.config.MapFactoryBean">
  <property name="sourceMap">
      <map>
        <entry key="pechorin" value="[email protected]"/>
        <entry key="raskolnikov" value="[email protected]"/>
        <entry key="stavrogin" value="[email protected]"/>
        <entry key="porfiry" value="[email protected]"/>
      </map>
  </property>
</bean>

关于异或的用法

		boolean hasResultKey = StringUtils.isNotEmpty(resultKey);
		boolean hasParamList = !CollectionUtils.isEmpty(paramList);

		if (hasResultKey ^ hasParamList) {
			throw new Exception(
					"xxxx");
		}