Add initial support for MVC namespace view resolution config

<mvc:view-resolution /> now allows to configure easily
view resolvers.

Issue: SPR-7093

spring-webmvc/src/test/java/org/springframework/web/servlet/config/MvcNamespaceTests.java

@@ -84,6 +84,13 @@ import org.springframework.web.servlet.resource.ResourceResolver;
 import org.springframework.web.servlet.resource.ResourceTransformer;
 import org.springframework.web.servlet.theme.ThemeChangeInterceptor;
 import org.springframework.web.util.UrlPathHelper;
+import org.springframework.web.servlet.view.BeanNameViewResolver;
+import org.springframework.web.servlet.view.InternalResourceView;
+import org.springframework.web.servlet.view.InternalResourceViewResolver;
+import org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer;
+import org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver;
+import org.springframework.web.servlet.view.tiles2.TilesConfigurer;
+import org.springframework.web.servlet.view.tiles2.TilesViewResolver;
 
 import static org.junit.Assert.*;
 
@@ -114,6 +121,7 @@ public class MvcNamespaceTests {
 		handlerMethod = new InvocableHandlerMethod(handler, method);
 	}
 
+
 	@Test
 	public void testDefaultConfig() throws Exception {
 		loadBeanDefinitions("mvc-config.xml", 13);
@@ -546,6 +554,33 @@ public class MvcNamespaceTests {
 				(DeferredResultProcessingInterceptor[]) fieldAccessor.getPropertyValue("deferredResultInterceptors");
 		assertEquals(1, deferredResultInterceptors.length);
 	}
+	
+	@Test
+	public void testViewResolvers() throws Exception{
+		loadBeanDefinitions("mvc-config-view-resolvers.xml", 6);
+		InternalResourceViewResolver internalResourceViewResolver=appContext.getBean(InternalResourceViewResolver.class);
+		assertNotNull(internalResourceViewResolver);
+		InternalResourceView jstlView=(InternalResourceView) internalResourceViewResolver.resolveViewName("xyz", Locale.ENGLISH);
+		assertEquals(jstlView.getUrl(), "/WEB-INF/xyz.jsp");
+	
+		BeanNameViewResolver beanNameUrlHandlerMapping=appContext.getBean(BeanNameViewResolver.class);
+		assertNotNull(beanNameUrlHandlerMapping);	
+		
+		TilesConfigurer tilesConfigurer=appContext.getBean(TilesConfigurer.class);
+		assertNotNull(tilesConfigurer);
+		
+		TilesViewResolver tilesViewResolver=appContext.getBean(TilesViewResolver.class);
+		assertNotNull(tilesViewResolver);
+		
+		FreeMarkerConfigurer freeMarkerConfigurer=appContext.getBean(FreeMarkerConfigurer.class);		
+		assertNotNull(freeMarkerConfigurer);
+		
+		FreeMarkerViewResolver freeMarkerViewResolver=appContext.getBean(FreeMarkerViewResolver.class);
+		assertNotNull(freeMarkerViewResolver);
+	
+	
+	}
+	
 
 	@Test
 	public void testPathMatchingHandlerMappings() throws Exception {

spring-webmvc/src/test/resources/org/springframework/web/servlet/config/mvc-config-view-resolvers.xml

@@ -0,0 +1,17 @@
+<?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:mvc="http://www.springframework.org/schema/mvc"
+	xsi:schemaLocation="http://www.springframework.org/schema/mvc  http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
+		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
+
+	 <mvc:view-resolvers>
+		<mvc:jsp prefix="/WEB-INF/" suffix=".jsp" /> 
+		<mvc:bean-name />
+	<mvc:tiles definitions="/tiles.xml" />  
+		
+		 <mvc:freemarker prefix="" suffix=".ftl" templateLoaderPath="/WEB-INF/ftl/" /> 
+	</mvc:view-resolvers> 
+ 
+</beans>
+ 

spring-webmvc/src/test/resources/tiles.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE tiles-definitions PUBLIC
+       "-//Apache Software Foundation//DTD Tiles Configuration 2.0//EN"
+       "http://tiles.apache.org/dtds/tiles-config_2_0.dtd">
+<tiles-definitions>
+	<definition name="base.definition"
+		template="/WEB-INF/jsp/layout.jsp">
+		<put-attribute name="title" value="" />
+		<put-attribute name="header" value="/WEB-INF/jsp/header.jsp" />
+		<put-attribute name="menu" value="/WEB-INF/jsp/menu.jsp" />
+		<put-attribute name="body" value="" />
+		<put-attribute name="footer" value="/WEB-INF/jsp/footer.jsp" />
+	</definition>
+
+	<definition name="contact" extends="base.definition">
+		<put-attribute name="title" value="Contact Manager" />
+		<put-attribute name="body" value="/WEB-INF/jsp/contact.jsp" />
+	</definition>
+
+</tiles-definitions>