问题
在Spring MVC应用程序中,我们经常需要应用一些视图解析器策略来解析视图名称。例如,联合使用三个视图解析器:InternalResourceViewResolver、ResourceBundleViewResolver和XmlViewResolver。
但是,如果返回了一个视图的名称,那么,使用哪一个视图解析器策略?
解决方法
如果应用了多个视图解析器策略,那么就必须通过“order”属性来声明优先级,order值越低,则优先级越高。例如:
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|
<?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:p=
"http://www.springframework.org/schema/p"
xmlns:context=
"http://www.springframework.org/schema/context"
xmlns:mvc=
"http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http:
//www.springframework.org/schema/beans
http:
//www.springframework.org/schema/beans/spring-beans-3.0.xsd
http:
//www.springframework.org/schema/context
http:
//www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!-- 扫描web包,应用Spring的注解 -->
<context:component-scan base-
package
=
"com.xxx.training"
/>
<bean
class
=
"org.springframework.web.servlet.view.ResourceBundleViewResolver"
>
<property name=
"basename"
>
<value>spring-views</value>
</property>
<property name=
"order"
value=
"0"
/>
</bean>
<bean
class
=
"org.springframework.web.servlet.view.XmlViewResolver"
>
<property name=
"location"
>
<value>/WEB-INF/spring-views.xml</value>
</property>
<property name=
"order"
value=
"1"
/>
</bean>
<bean id=
"viewResolver"
class
=
"org.springframework.web.servlet.view.InternalResourceViewResolver"
>
<property name=
"prefix"
>
<value>/WEB-INF/pages/</value>
</property>
<property name=
"suffix"
>
<value>.jsp</value>
</property>
<property name=
"order"
value=
"2"
/>
</bean>
</beans>
|
注意:InternalResourceViewResolver必须总是赋予最低的优先级(最大的order值),因为不管返回什么视图名称,它都将解析视图。如果它的优先级高于其它解析器的优先级的话,它将使得其它具有较低优先级的解析器没有机会解析视图。
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本文转自被遗忘的博客园博客,原文链接:http://www.cnblogs.com/rollenholt/archive/2012/12/27/2836035.html,如需转载请自行联系原作者