Add spring.resources.add-mappings property

Add `spring.resources.add-mappings` allowing users to configure if
resource mappings should be added or not.

Fixes gh-804

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

+/*
+ * Copyright 2012-2014 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.web;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+/**
+ * Properties used to configure resource handling.
+ * 
+ * @author Phillip Webb
+ * @since 1.1.0
+ */
+@ConfigurationProperties(prefix = "spring.resources", ignoreUnknownFields = false)
+public class ResourceProperties {
+
+	private Integer cachePeriod;
+
+	private boolean addMappings = true;
+
+	public Integer getCachePeriod() {
+		return this.cachePeriod;
+	}
+
+	public void setCachePeriod(Integer cachePeriod) {
+		this.cachePeriod = cachePeriod;
+	}
+
+	public boolean isAddMappings() {
+		return this.addMappings;
+	}
+
+	public void setAddMappings(boolean addMappings) {
+		this.addMappings = addMappings;
+	}
+
+}

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

@@ -38,6 +38,7 @@ import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnExpression;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.core.Ordered;
@@ -114,6 +115,7 @@ public class WebMvcAutoConfiguration {
 	}
 
 	public static String DEFAULT_PREFIX = "";
+
 	public static String DEFAULT_SUFFIX = "";
 
 	@Bean
@@ -126,6 +128,7 @@ public class WebMvcAutoConfiguration {
 	// on the classpath
 	@Configuration
 	@EnableWebMvc
+	@EnableConfigurationProperties(ResourceProperties.class)
 	public static class WebMvcAutoConfigurationAdapter extends WebMvcConfigurerAdapter {
 
 		private static Log logger = LogFactory.getLog(WebMvcConfigurerAdapter.class);
@@ -136,8 +139,8 @@ public class WebMvcAutoConfiguration {
 		@Value("${spring.view.suffix:}")
 		private String suffix = "";
 
-		@Value("${spring.resources.cachePeriod:}")
-		private Integer cachePeriod;
+		@Autowired
+		private ResourceProperties resourceProperties = new ResourceProperties();
 
 		@Value("${spring.mvc.message-codes-resolver.format:}")
 		private DefaultMessageCodesResolver.Format messageCodesResolverFormat = null;
@@ -242,15 +245,21 @@ public class WebMvcAutoConfiguration {
 
 		@Override
 		public void addResourceHandlers(ResourceHandlerRegistry registry) {
+			if (!this.resourceProperties.isAddMappings()) {
+				logger.debug("Default resource handling disabled");
+				return;
+			}
+
+			Integer cachePeriod = this.resourceProperties.getCachePeriod();
 			if (!registry.hasMappingForPattern("/webjars/**")) {
 				registry.addResourceHandler("/webjars/**")
 						.addResourceLocations("classpath:/META-INF/resources/webjars/")
-						.setCachePeriod(this.cachePeriod);
+						.setCachePeriod(cachePeriod);
 			}
 			if (!registry.hasMappingForPattern("/**")) {
 				registry.addResourceHandler("/**")
 						.addResourceLocations(RESOURCE_LOCATIONS)
-						.setCachePeriod(this.cachePeriod);
+						.setCachePeriod(cachePeriod);
 			}
 		}
 

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/WebMvcAutoConfigurationTests.java

@@ -155,6 +155,19 @@ public class WebMvcAutoConfigurationTests {
 				equalTo((Resource) new ClassPathResource("/foo/")));
 	}
 
+	@Test
+	public void resourceHandlerMappingDisabled() throws Exception {
+		this.context = new AnnotationConfigEmbeddedWebApplicationContext();
+		EnvironmentTestUtils.addEnvironment(this.context,
+				"spring.resources.add-mappings:false");
+		this.context.register(Config.class, WebMvcAutoConfiguration.class,
+				HttpMessageConvertersAutoConfiguration.class,
+				PropertyPlaceholderAutoConfiguration.class);
+		this.context.refresh();
+		Map<String, List<Resource>> mappingLocations = getMappingLocations();
+		assertThat(mappingLocations.size(), equalTo(0));
+	}
+
 	@Test
 	public void noLocaleResolver() throws Exception {
 		this.context = new AnnotationConfigEmbeddedWebApplicationContext();
@@ -195,7 +208,8 @@ public class WebMvcAutoConfigurationTests {
 				HttpMessageConvertersAutoConfiguration.class,
 				PropertyPlaceholderAutoConfiguration.class);
 		this.context.refresh();
-		FormattingConversionService cs = this.context.getBean(FormattingConversionService.class);
+		FormattingConversionService cs = this.context
+				.getBean(FormattingConversionService.class);
 		Date date = new DateTime(1988, 6, 25, 20, 30).toDate();
 		// formatting cs should use simple toString()
 		assertThat(cs.convert(date, String.class), equalTo(date.toString()));
@@ -205,13 +219,15 @@ public class WebMvcAutoConfigurationTests {
 	public void overrideDateFormat() throws Exception {
 		this.context = new AnnotationConfigEmbeddedWebApplicationContext();
 		// set fixed date format
-		EnvironmentTestUtils.addEnvironment(this.context, "spring.mvc.date-format:dd*MM*yyyy");
+		EnvironmentTestUtils.addEnvironment(this.context,
+				"spring.mvc.date-format:dd*MM*yyyy");
 		this.context.register(AllResources.class, Config.class,
 				WebMvcAutoConfiguration.class,
 				HttpMessageConvertersAutoConfiguration.class,
 				PropertyPlaceholderAutoConfiguration.class);
 		this.context.refresh();
-		FormattingConversionService cs = this.context.getBean(FormattingConversionService.class);
+		FormattingConversionService cs = this.context
+				.getBean(FormattingConversionService.class);
 		Date date = new DateTime(1988, 6, 25, 20, 30).toDate();
 		assertThat(cs.convert(date, String.class), equalTo("25*06*1988"));
 	}
@@ -245,17 +261,20 @@ public class WebMvcAutoConfigurationTests {
 	@SuppressWarnings("unchecked")
 	protected Map<String, List<Resource>> getMappingLocations()
 			throws IllegalAccessException {
-		SimpleUrlHandlerMapping mapping = (SimpleUrlHandlerMapping) this.context
+		HandlerMapping mapping = (HandlerMapping) this.context
 				.getBean("resourceHandlerMapping");
-		Field locationsField = ReflectionUtils.findField(
-				ResourceHttpRequestHandler.class, "locations");
-		locationsField.setAccessible(true);
 		Map<String, List<Resource>> mappingLocations = new LinkedHashMap<String, List<Resource>>();
-		for (Map.Entry<String, Object> entry : mapping.getHandlerMap().entrySet()) {
-			ResourceHttpRequestHandler handler = (ResourceHttpRequestHandler) entry
-					.getValue();
-			mappingLocations.put(entry.getKey(),
-					(List<Resource>) locationsField.get(handler));
+		if (mapping instanceof SimpleUrlHandlerMapping) {
+			Field locationsField = ReflectionUtils.findField(
+					ResourceHttpRequestHandler.class, "locations");
+			locationsField.setAccessible(true);
+			for (Map.Entry<String, Object> entry : ((SimpleUrlHandlerMapping) mapping)
+					.getHandlerMap().entrySet()) {
+				ResourceHttpRequestHandler handler = (ResourceHttpRequestHandler) entry
+						.getValue();
+				mappingLocations.put(entry.getKey(),
+						(List<Resource>) locationsField.get(handler));
+			}
 		}
 		return mappingLocations;
 	}

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

@@ -73,6 +73,7 @@ content into your application; rather pick only the properties that you need.
 	spring.view.prefix= # MVC view prefix
 	spring.view.suffix= # ... and suffix
 	spring.resources.cache-period= # cache timeouts in headers sent to browser
+	spring.resources.add-mappings=true # if default mappings should be added
 
 	# THYMELEAF ({sc-spring-boot-autoconfigure}/thymeleaf/ThymeleafAutoConfiguration.{sc-ext}[ThymeleafAutoConfiguration])
 	spring.thymeleaf.prefix=classpath:/templates/