Use versioned URLs for JS/CSS resources of external libraries.

Fix #455

No functional changes.

Author: bodom91

pom.xml

@@ -340,7 +340,7 @@
 	</parent>
 
 	<properties>
-		<!-- Don't forget to update version in MvcConfig and Url classes -->
+		<!-- Don't forget to update version in the Url class -->
 		<bootstrap.version>3.3.6</bootstrap.version>
 
 		<cglib.version>2.2.2</cglib.version>
@@ -388,7 +388,7 @@
 		<!-- Redefine default value from spring-boot-dependencies (https://git.io/vKAiK) -->
 		<jetty.version>9.2.18.v20160721</jetty.version>
 
-		<!-- Don't forget to update version in MvcConfig and Url classes -->
+		<!-- Don't forget to update version in the Url class -->
 		<jquery.version>1.9.1</jquery.version>
 
 		<license.plugin.version>1.9.0</license.plugin.version>
@@ -406,7 +406,7 @@
 		<pmd.plugin.version>3.6</pmd.plugin.version>
 		<resources.plugin.version>2.7</resources.plugin.version>
 
-		<!-- Don't forget to update version in MvcConfig and Url classes -->
+		<!-- Don't forget to update version in the Url class -->
 		<selectizejs.version>0.12.1</selectizejs.version>
 
 		<selenium.htmlunit.version>2.20</selenium.htmlunit.version>

src/main/java/ru/mystamps/web/Url.java

@@ -87,16 +87,16 @@ public final class Url {
 	public static final String SERIES_ADD_JS          = "/public/js/series/add.min.js";
 	public static final String COLLECTION_INFO_JS     = "/public/js/collection/info.min.js";
 
-	public static final String BOOTSTRAP_CSS          = "/public/bootstrap/css/bootstrap.min.css";
-	public static final String BOOTSTRAP_JS           = "/public/bootstrap/js/bootstrap.min.js";
-	public static final String JQUERY_JS              = "/public/jquery/jquery.min.js";
-	// CheckStyle: ignore LineLength for next 1 lines
+	// CheckStyle: ignore LineLength for next 4 lines
+	public static final String BOOTSTRAP_CSS          = "/public/bootstrap/3.3.6/css/bootstrap.min.css";
+	public static final String BOOTSTRAP_JS           = "/public/bootstrap/3.3.6/js/bootstrap.min.js";
+	public static final String JQUERY_JS              = "/public/jquery/1.9.1/jquery.min.js";
 	public static final String BOOTSTRAP_LANGUAGE     = "https://cdn.rawgit.com/usrz/bootstrap-languages/3ac2a3d2b27ac43a471cd99e79d378a03b2c6b5f/languages.min.css";
 
 	// CheckStyle: ignore LineLength for next 3 lines
 	// TODO: use minimal version of CSS file when it will be available (https://github.com/webjars/selectize.js/issues/3)
-	public static final String SELECTIZE_CSS          = "/public/selectize/css/selectize.bootstrap3.css";
-	public static final String SELECTIZE_JS           = "/public/selectize/js/standalone/selectize.min.js";
+	public static final String SELECTIZE_CSS          = "/public/selectize/0.12.1/css/selectize.bootstrap3.css";
+	public static final String SELECTIZE_JS           = "/public/selectize/0.12.1/js/standalone/selectize.min.js";
 
 	// see also pom.xml and ru.mystamps.web.config.MvcConfig#addResourceHandlers()
 	// CheckStyle: ignore LineLength for next 5 lines

src/main/java/ru/mystamps/web/config/MvcConfig.java

@@ -84,11 +84,11 @@ public void addResourceHandlers(ResourceHandlerRegistry registry) {
 
 		// For WebJars:
 		registry.addResourceHandler("/public/bootstrap/**")
-			.addResourceLocations("classpath:/META-INF/resources/webjars/bootstrap/3.3.6/");
+			.addResourceLocations("classpath:/META-INF/resources/webjars/bootstrap/");
 		registry.addResourceHandler("/public/jquery/**")
-			.addResourceLocations("classpath:/META-INF/resources/webjars/jquery/1.9.1/");
+			.addResourceLocations("classpath:/META-INF/resources/webjars/jquery/");
 		registry.addResourceHandler("/public/selectize/**")
-			.addResourceLocations("classpath:/META-INF/resources/webjars/selectize.js/0.12.1/");
+			.addResourceLocations("classpath:/META-INF/resources/webjars/selectize.js/");
 	}
 
 	@Override