具有多个视图解析器的Spring MVC
我尝试使用2个视图解析器:
<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<context:component-scan base-package="com.evgeni.dfr.controller" />
<context:annotation-config />
<mvc:annotation-driven />
<bean id="viewResolver"
class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="cache" value="false" />
<property name="viewClass" value="com.evgeni.drf.faces.FacesView" />
<property name="prefix" value="/WEB-INF/pages/" />
<property name="suffix" value=".xhtml" />
<property name="order" value="1" />
</bean>
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/WEB-INF/views/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
<property name="order" value="0" />
</bean>
</beans>
该应用程序始终仅使用顺序最低的一个,而不使用另一个。在当前情况下,如果我的控制器返回“ someView”,则The requested resource (/MyProject/WEB-INF/views/someView.jsp) is not available.即使存在“ pages / someView.xhtml” ,应用也会响应。
Spring version - 3.2.3
编辑:如果我在控制器中有2个方法,并且methodA返回“ viewA”,而methodB返回“ viewB”。我们在“ views”文件夹中有viewA.jsp,在“ pages”中有viewB.xhtml。
情况1:UrlBasedViewResolver-> order = 1,InternalResourceViewResolver-> order = 2
methodA-> The requested resource (/MyProject/WEB-INF/pages/viewA.xhtml) is not available.;
methodB -> OK
情况2:UrlBasedViewResolver-> order = 2,InternalResourceViewResolver-> order = 1
方法A->确定;
methodB -> `The requested resource (/MyProject/WEB-INF/views/viewB.jsp) is not available.`;
回答:
我认为你误解了订单优先级。该ViewResolver
最高顺序是链中最后一个解析器。由于你给的InternalResourceViewResolver
订单是0
,因此它将成为链中的第一个解析器,并且InternalResourceViewResolver
无论返回什么视图名称,都会解析该视图。因此,如果要使用多个解析器,则InternalResourceViewResolver
必须是顺序最高的解析器。
将InternalResourceViewResolver
订单值更改为2:
<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<context:component-scan base-package="com.evgeni.dfr.controller" />
<context:annotation-config />
<mvc:annotation-driven />
<bean id="viewResolver"
class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="cache" value="false" />
<property name="viewClass" value="com.evgeni.drf.faces.FacesView" />
<property name="prefix" value="/WEB-INF/pages/" />
<property name="suffix" value=".xhtml" />
<property name="order" value="1" />
</bean>
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/WEB-INF/views/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
<property name="order" value="2" />
</bean>
</beans>
编辑:
检查javadoc后,似乎这两个解析程序无法链接,因为InternalResourceViewResolver
是UrlBasedViewResolver(InternalResourceViewResolver
扩展了UrlBasedViewResolver
)。两个解析器始终与返回值匹配。我认为你将需要一些自定义功能才能执行此操作。
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