Java tutorial
/* * Copyright 2002-2017 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 * * https://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.web.servlet.config.annotation; import java.util.ArrayList; import java.util.LinkedHashMap; import java.util.List; import java.util.Map; import org.springframework.web.cors.CorsConfiguration; /** * Assists with the registration of global, URL pattern based * {@link CorsConfiguration} mappings. * * @author Sebastien Deleuze * @author Rossen Stoyanchev * @since 4.2 * @see CorsRegistration */ public class CorsRegistry { private final List<CorsRegistration> registrations = new ArrayList<>(); /** * Enable cross-origin request handling for the specified path pattern. * * <p>Exact path mapping URIs (such as {@code "/admin"}) are supported as * well as Ant-style path patterns (such as {@code "/admin/**"}). * <p>By default, all origins, all headers, credentials and {@code GET}, * {@code HEAD}, and {@code POST} methods are allowed, and the max age * is set to 30 minutes. * * <p>The following defaults are applied to the {@link CorsRegistration}: * <ul> * <li>Allow all origins.</li> * <li>Allow "simple" methods {@code GET}, {@code HEAD} and {@code POST}.</li> * <li>Allow all headers.</li> * <li>Set max age to 1800 seconds (30 minutes).</li> * </ul> */ public CorsRegistration addMapping(String pathPattern) { CorsRegistration registration = new CorsRegistration(pathPattern); this.registrations.add(registration); return registration; } /** * Return the registered {@link CorsConfiguration} objects, * keyed by path pattern. */ protected Map<String, CorsConfiguration> getCorsConfigurations() { Map<String, CorsConfiguration> configs = new LinkedHashMap<>(this.registrations.size()); for (CorsRegistration registration : this.registrations) { configs.put(registration.getPathPattern(), registration.getCorsConfiguration()); } return configs; } }