Update doc to align with TomcatEmbeddedServletContainerFactory renaming

Closes gh-12215

Author: izeye

spring-boot-project/spring-boot-docs/src/main/asciidoc/production-ready-features.adoc

@@ -1822,37 +1822,7 @@ depending on the web server in use. For Tomcat, the following configuration can
 
 [source,java,indent=0]
 ----
-	@Bean
-	public TomcatEmbeddedServletContainerFactory servletContainerFactory() {
-		return new TomcatEmbeddedServletContainerFactory() {
-			@Override
-			protected void prepareContext(Host host,
-						ServletContextInitializer[] initializers) {
-				super.prepareContext(host, initializers);
-				StandardContext child = new StandardContext();
-				child.addLifecycleListener(new Tomcat.FixContextListener());
-				child.setPath("/cloudfoundryapplication");
-				ServletContainerInitializer initializer = getServletContextInitializer(getContextPath());
-				child.addServletContainerInitializer(initializer, Collections.emptySet());
-				child.setCrossContext(true);
-				host.addChild(child);
-			}
-		};
-	}
-
-	private ServletContainerInitializer getServletContextInitializer(String contextPath) {
-		return (c, context) -> {
-			Servlet servlet = new GenericServlet() {
-				@Override
-				public void service(ServletRequest req, ServletResponse res)
-						throws ServletException, IOException {
-					ServletContext context = req.getServletContext().getContext(contextPath);
-					context.getRequestDispatcher("/cloudfoundryapplication").forward(req, res);
-				}
-			};
-			context.addServlet("cloudfoundry", servlet).addMapping("/*");
-		};
-	}
+include::{code-examples}/cloudfoundry/CloudFoundryCustomContextPathExample.java[tag=configuration]
 ----
 
 

spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/cloudfoundry/CloudFoundryCustomContextPathExample.java

@@ -0,0 +1,82 @@
+/*
+ * Copyright 2012-2018 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.docs.cloudfoundry;
+
+import java.io.IOException;
+import java.util.Collections;
+
+import javax.servlet.GenericServlet;
+import javax.servlet.Servlet;
+import javax.servlet.ServletContainerInitializer;
+import javax.servlet.ServletContext;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+
+import org.apache.catalina.Host;
+import org.apache.catalina.core.StandardContext;
+import org.apache.catalina.startup.Tomcat;
+
+import org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory;
+import org.springframework.boot.web.servlet.ServletContextInitializer;
+import org.springframework.context.annotation.Bean;
+
+/**
+ * Example configuration for custom context path in Cloud Foundry.
+ *
+ * @author Johnny Lim
+ */
+public class CloudFoundryCustomContextPathExample {
+
+	// tag::configuration[]
+	@Bean
+	public TomcatServletWebServerFactory servletWebServerFactory() {
+		return new TomcatServletWebServerFactory() {
+
+			@Override
+			protected void prepareContext(Host host, ServletContextInitializer[] initializers) {
+				super.prepareContext(host, initializers);
+				StandardContext child = new StandardContext();
+				child.addLifecycleListener(new Tomcat.FixContextListener());
+				child.setPath("/cloudfoundryapplication");
+				ServletContainerInitializer initializer = getServletContextInitializer(getContextPath());
+				child.addServletContainerInitializer(initializer, Collections.emptySet());
+				child.setCrossContext(true);
+				host.addChild(child);
+			}
+
+		};
+	}
+
+	private ServletContainerInitializer getServletContextInitializer(String contextPath) {
+		return (c, context) -> {
+			Servlet servlet = new GenericServlet() {
+
+				@Override
+				public void service(ServletRequest req, ServletResponse res)
+						throws ServletException, IOException {
+					ServletContext context = req.getServletContext().getContext(contextPath);
+					context.getRequestDispatcher("/cloudfoundryapplication").forward(req, res);
+				}
+
+			};
+			context.addServlet("cloudfoundry", servlet).addMapping("/*");
+		};
+	}
+	// end::configuration[]
+
+}