在Spring MVC中,我可以使用JstlView的posedContextBeanNames(或ExposureContextBeansAsAttributes)在JSP中访问我的bean。例如,然后,在我的JSP中,我可以编写($ {properties.myProperty)。但是,当相同的JSP是tile视图的一部分时,将无法访问这些属性。是否可以正确配置Tiles或以其他方式访问这些属性?
我正在使用Spring MVC 3.0.2和Tiles 2.2.1。这是我的一些配置:
<bean id="tilesViewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver"> <property name="order" value="1"/> <property name="viewClass" value="org.springframework.web.servlet.view.tiles2.TilesView" /> </bean> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/> <property name="order" value="2"/> <property name="prefix" value="/WEB-INF/views/"/> <property name="suffix" value=".jsp"/> <property name="exposedContextBeanNames"> <list><value>properties</value></list> </property> </bean>
编辑:我已经实现了Skaffman的解决方案。
TilesExposedBeansViewResolver.java: package es.kcsolutions.util.spring.servlet.view; import org.springframework.web.servlet.view.*; public class TilesExposingBeansViewResolver extends UrlBasedViewResolver { private Boolean exposeContextBeansAsAttributes; private String[] exposedContextBeanNames; public void setExposeContextBeansAsAttributes(boolean exposeContextBeansAsAttributes) { this.exposeContextBeansAsAttributes = exposeContextBeansAsAttributes; } public void setExposedContextBeanNames(String[] exposedContextBeanNames) { this.exposedContextBeanNames = exposedContextBeanNames; } @Override protected AbstractUrlBasedView buildView(String viewName) throws Exception { AbstractUrlBasedView superView = super.buildView(viewName); if (superView instanceof TilesExposingBeansView) { TilesExposingBeansView view = (TilesExposingBeansView) superView; if (this.exposeContextBeansAsAttributes != null) view.setExposeContextBeansAsAttributes(this.exposeContextBeansAsAttributes); if (this.exposedContextBeanNames != null) view.setExposedContextBeanNames(this.exposedContextBeanNames); } return superView; } }
TilesExposedBeansView.java:
package es.kcsolutions.util.spring.servlet.view; import java.util.*; import javax.servlet.http.*; import org.springframework.web.context.support.ContextExposingHttpServletRequest; import org.springframework.web.servlet.view.tiles2.TilesView; public class TilesExposingBeansView extends TilesView { private boolean exposeContextBeansAsAttributes = false; private Set<String> exposedContextBeanNames; public void setExposeContextBeansAsAttributes(boolean exposeContextBeansAsAttributes) { this.exposeContextBeansAsAttributes = exposeContextBeansAsAttributes; } public void setExposedContextBeanNames(String[] exposedContextBeanNames) { this.exposedContextBeanNames = new HashSet<String>(Arrays.asList(exposedContextBeanNames)); } protected HttpServletRequest getRequestToExpose(HttpServletRequest originalRequest) { if (this.exposeContextBeansAsAttributes || this.exposedContextBeanNames != null) return new ContextExposingHttpServletRequest(originalRequest, getWebApplicationContext(), this.exposedContextBeanNames); return originalRequest; } @Override protected void renderMergedOutputModel(Map<String, Object> model, HttpServletRequest request, HttpServletResponse response) throws Exception { HttpServletRequest requestToExpose = getRequestToExpose(request); exposeModelAsRequestAttributes(model, requestToExpose); super.renderMergedOutputModel(model, requestToExpose, response); } }
Spring配置:
<bean id="tilesViewResolver" class="es.kcsolutions.util.spring.servlet.view.TilesExposingBeansViewResolver"> <property name="order" value="1"/> <property name="viewClass" value="es.kcsolutions.util.spring.servlet.view.TilesExposingBeansView"/> <property name="exposedContextBeanNames"> <list><value>properties</value></list> </property> </bean>
如果有问题,请查看TilesExposedBeansView.renderMergedOutputModel。我做了一些测试,但是也许有必要做更多的事情。
你是否尝试在xml配置文件中使用ServletContextAttributeExporter?
<bean class="org.springframework.web.context.support.ServletContextAttributeExporter"> <property name="attributes"> <map> <entry key="<bean key here>"> <ref bean="<bean name here" /> </entry> </map> </property> </bean>