001/* 002 * Copyright 2002-2018 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.web.servlet.config; 018 019import java.util.ArrayList; 020import java.util.List; 021 022import org.w3c.dom.Element; 023 024import org.springframework.beans.factory.support.AbstractBeanDefinition; 025import org.springframework.beans.factory.support.BeanDefinitionBuilder; 026import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser; 027import org.springframework.beans.factory.xml.ParserContext; 028import org.springframework.util.StringUtils; 029import org.springframework.util.xml.DomUtils; 030 031/** 032 * Parse the <code><mvc:freemarker-configurer></code> MVC namespace element and 033 * register {@code FreeMarkerConfigurer} bean. 034 * 035 * @author Rossen Stoyanchev 036 * @since 4.1 037 */ 038public class FreeMarkerConfigurerBeanDefinitionParser extends AbstractSingleBeanDefinitionParser { 039 040 /** 041 * The bean name used for the {@code FreeMarkerConfigurer}. 042 */ 043 public static final String BEAN_NAME = "mvcFreeMarkerConfigurer"; 044 045 046 @Override 047 protected String getBeanClassName(Element element) { 048 return "org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer"; 049 } 050 051 @Override 052 protected String resolveId(Element element, AbstractBeanDefinition definition, ParserContext parserContext) { 053 return BEAN_NAME; 054 } 055 056 @Override 057 protected void doParse(Element element, ParserContext parserContext, BeanDefinitionBuilder builder) { 058 List<Element> childElements = DomUtils.getChildElementsByTagName(element, "template-loader-path"); 059 if (!childElements.isEmpty()) { 060 List<String> locations = new ArrayList<>(childElements.size()); 061 for (Element childElement : childElements) { 062 locations.add(childElement.getAttribute("location")); 063 } 064 if (locations.isEmpty()) { 065 locations.add("/WEB-INF/"); 066 } 067 builder.addPropertyValue("templateLoaderPaths", StringUtils.toStringArray(locations)); 068 } 069 } 070 071}