Migrate spring.view properties

Migrate `spring.view.prefix` and `spring.view.suffix` to
`spring.mvc.view.prefix` and `spring.mvc.view.suffix` respectively. The
former properties are still handled in a backward compatible way and are
defined as deprecated in the meta-data.

Closes spring-projectsgh-3250

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/JspTemplateAvailabilityProvider.java

@@ -26,6 +26,7 @@
  * view templates
  *
  * @author Andy Wilkinson
+ * @author Stephane Nicoll
  * @since 1.1.0
  */
 public class JspTemplateAvailabilityProvider implements TemplateAvailabilityProvider {
@@ -34,13 +35,23 @@ public class JspTemplateAvailabilityProvider implements TemplateAvailabilityProv
 	public boolean isTemplateAvailable(String view, Environment environment,
 			ClassLoader classLoader, ResourceLoader resourceLoader) {
 		if (ClassUtils.isPresent("org.apache.jasper.compiler.JspConfig", classLoader)) {
-			String prefix = environment.getProperty("spring.view.prefix",
+			String prefix = getProperty(environment, "spring.mvc.view.prefix", "spring.view.prefix",
 					WebMvcAutoConfiguration.DEFAULT_PREFIX);
-			String suffix = environment.getProperty("spring.view.suffix",
+			String suffix = getProperty(environment, "spring.mvc.view.suffix", "spring.view.suffix",
 					WebMvcAutoConfiguration.DEFAULT_SUFFIX);
 			return resourceLoader.getResource(prefix + view + suffix).exists();
 		}
 		return false;
 	}
 
+	private String getProperty(Environment environment, String key, String deprecatedKey, String defaultValue) {
+		if (environment.containsProperty(key)) {
+			return environment.getProperty(key);
+		}
+		if (environment.containsProperty(deprecatedKey)) {
+			return environment.getProperty(deprecatedKey);
+		}
+		return defaultValue;
+	}
+
 }

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/WebMvcAutoConfiguration.java

@@ -30,7 +30,6 @@
 import org.springframework.beans.factory.BeanFactory;
 import org.springframework.beans.factory.ListableBeanFactory;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.beans.factory.annotation.Value;
 import org.springframework.boot.autoconfigure.AutoConfigureAfter;
 import org.springframework.boot.autoconfigure.AutoConfigureOrder;
 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
@@ -142,12 +141,6 @@ public static class WebMvcAutoConfigurationAdapter extends WebMvcConfigurerAdapt
 
 		private static Log logger = LogFactory.getLog(WebMvcConfigurerAdapter.class);
 
-		@Value("${spring.view.prefix:}")
-		private String prefix = "";
-
-		@Value("${spring.view.suffix:}")
-		private String suffix = "";
-
 		@Autowired
 		private ResourceProperties resourceProperties = new ResourceProperties();
 
@@ -180,8 +173,8 @@ public void configureAsyncSupport(AsyncSupportConfigurer configurer) {
 		@ConditionalOnMissingBean(InternalResourceViewResolver.class)
 		public InternalResourceViewResolver defaultViewResolver() {
 			InternalResourceViewResolver resolver = new InternalResourceViewResolver();
-			resolver.setPrefix(this.prefix);
-			resolver.setSuffix(this.suffix);
+			resolver.setPrefix(this.mvcProperties.getView().getPrefix());
+			resolver.setSuffix(this.mvcProperties.getView().getSuffix());
 			return resolver;
 		}
 

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/WebMvcProperties.java

@@ -16,6 +16,7 @@
 
 package org.springframework.boot.autoconfigure.web;
 
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.boot.context.properties.ConfigurationProperties;
 import org.springframework.validation.DefaultMessageCodesResolver;
 
@@ -24,6 +25,7 @@
  *
  * @author Phillip Webb
  * @author Sébastien Deleuze
+ * @author Stephane Nicoll
  * @since 1.1
  */
 @ConfigurationProperties("spring.mvc")
@@ -52,6 +54,8 @@ public class WebMvcProperties {
 
 	private final Async async = new Async();
 
+	private final View view = new View();
+
 	public DefaultMessageCodesResolver.Format getMessageCodesResolverFormat() {
 		return this.messageCodesResolverFormat;
 	}
@@ -89,6 +93,10 @@ public Async getAsync() {
 		return this.async;
 	}
 
+	public View getView() {
+		return this.view;
+	}
+
 	public static class Async {
 
 		/**
@@ -107,4 +115,35 @@ public void setRequestTimeout(Long requestTimeout) {
 		}
 
 	}
+
+	public static class View {
+
+		/**
+		 * Spring MVC view prefix.
+		 */
+		@Value("${spring.view.prefix:}")
+		private String prefix;
+
+		/**
+		 * Spring MVC view suffx.
+		 */
+		@Value("${spring.view.suffix:}")
+		private String suffix;
+
+		public String getPrefix() {
+			return prefix;
+		}
+
+		public void setPrefix(String prefix) {
+			this.prefix = prefix;
+		}
+
+		public String getSuffix() {
+			return suffix;
+		}
+
+		public void setSuffix(String suffix) {
+			this.suffix = suffix;
+		}
+	}
 }

spring-boot-autoconfigure/src/main/resources/META-INF/additional-spring-configuration-metadata.json

@@ -149,12 +149,14 @@
   {
     "name": "spring.view.prefix",
     "type": "java.lang.String",
-    "description": "Spring MVC view prefix."
+    "description": "Spring MVC view prefix.",
+    "deprecated": true
   },
   {
     "name": "spring.view.suffix",
     "type": "java.lang.String",
-    "description": "Spring MVC view suffix."
+    "description": "Spring MVC view suffix.",
+    "deprecated": true
   }
 ]}
 

spring-boot-docs/src/main/asciidoc/appendix-application-properties.adoc

@@ -122,8 +122,8 @@ content into your application; rather pick only the properties that you need.
 	spring.mvc.message-codes-resolver-format= # PREFIX_ERROR_CODE / POSTFIX_ERROR_CODE
 	spring.mvc.ignore-default-model-on-redirect=true # if the the content of the "default" model should be ignored redirects
 	spring.mvc.async.request-timeout= # async request timeout in milliseconds
-	spring.view.prefix= # MVC view prefix
-	spring.view.suffix= # ... and suffix
+	spring.mvc.view.prefix= # MVC view prefix
+	spring.mvc.view.suffix= # ... and suffix
 
 	# SPRING RESOURCES HANDLING ({sc-spring-boot-autoconfigure}/web/ResourceProperties.{sc-ext}[ResourceProperties])
 	spring.resources.cache-period= # cache timeouts in headers sent to browser

spring-boot-docs/src/main/asciidoc/howto.adoc

@@ -1110,7 +1110,7 @@ added.
   resources and JSP pages if you are using those). It applies a prefix and a suffix to the
   view name and then looks for a physical resource with that path in the servlet context
   (defaults are both empty, but accessible for external configuration via
-  `spring.view.prefix` and `spring.view.suffix`). It can be overridden by providing a
+  `spring.mvc.view.prefix` and `spring.mvc.view.suffix`). It can be overridden by providing a
   bean of the same type.
 * A `BeanNameViewResolver` with id '`beanNameViewResolver`'. This is a useful member of the
   view resolver chain and will pick up any beans with the same name as the `View` being

spring-boot-samples/spring-boot-sample-tomcat-jsp/src/main/resources/application.properties

@@ -1,3 +1,3 @@
-spring.view.prefix: /WEB-INF/jsp/
-spring.view.suffix: .jsp
+spring.mvc.view.prefix: /WEB-INF/jsp/
+spring.mvc.view.suffix: .jsp
 application.message: Hello Phil

spring-boot-samples/spring-boot-sample-tomcat7-jsp/src/main/resources/application.properties

@@ -1,3 +1,3 @@
-spring.view.prefix: /WEB-INF/jsp/
-spring.view.suffix: .jsp
+spring.mvc.view.prefix: /WEB-INF/jsp/
+spring.mvc.view.suffix: .jsp
 application.message: Hello Phil

spring-boot-samples/spring-boot-sample-web-jsp/src/main/resources/application.properties

@@ -1,3 +1,3 @@
-spring.view.prefix: /WEB-INF/jsp/
-spring.view.suffix: .jsp
+spring.mvc.view.prefix: /WEB-INF/jsp/
+spring.mvc.view.suffix: .jsp
 application.message: Hello Phil