Java tutorial
/* * Copyright 2002-2018 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 * * 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.reactive.result.method.annotation; import org.springframework.core.MethodParameter; import org.springframework.lang.Nullable; import org.springframework.util.Assert; import org.springframework.web.bind.support.SessionStatus; import org.springframework.web.reactive.BindingContext; import org.springframework.web.reactive.result.method.SyncHandlerMethodArgumentResolver; import org.springframework.web.server.ServerWebExchange; /** * Resolver for a {@link SessionStatus} argument obtaining it from the * {@link BindingContext}. * * @author Rossen Stoyanchev * @since 5.0 */ public class SessionStatusMethodArgumentResolver implements SyncHandlerMethodArgumentResolver { @Override public boolean supportsParameter(MethodParameter parameter) { return SessionStatus.class == parameter.getParameterType(); } @Nullable @Override public Object resolveArgumentValue(MethodParameter parameter, BindingContext bindingContext, ServerWebExchange exchange) { Assert.isInstanceOf(InitBinderBindingContext.class, bindingContext); return ((InitBinderBindingContext) bindingContext).getSessionStatus(); } }