001/* 002 * Copyright 2012-2017 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 * http://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.boot; 018 019import org.springframework.core.Ordered; 020import org.springframework.core.annotation.Order; 021 022/** 023 * Interface used to indicate that a bean should <em>run</em> when it is contained within 024 * a {@link SpringApplication}. Multiple {@link CommandLineRunner} beans can be defined 025 * within the same application context and can be ordered using the {@link Ordered} 026 * interface or {@link Order @Order} annotation. 027 * <p> 028 * If you need access to {@link ApplicationArguments} instead of the raw String array 029 * consider using {@link ApplicationRunner}. 030 * 031 * @author Dave Syer 032 * @see ApplicationRunner 033 */ 034@FunctionalInterface 035public interface CommandLineRunner { 036 037 /** 038 * Callback used to run the bean. 039 * @param args incoming main method arguments 040 * @throws Exception on error 041 */ 042 void run(String... args) throws Exception; 043 044}