spring-boot/spring-boot-samples/spring-boot-sample-servlet/src/main/java/sample/servlet/SampleServletApplication.java

/*
 * Copyright 2012-2014 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 sample.servlet;

import java.io.IOException;

import javax.servlet.GenericServlet;
import javax.servlet.Servlet;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.context.web.SpringBootServletInitializer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
@EnableAutoConfiguration
public class SampleServletApplication extends SpringBootServletInitializer {

	@SuppressWarnings("serial")
	@Bean
	public Servlet dispatcherServlet() {
		return new GenericServlet() {
			@Override
			public void service(ServletRequest req, ServletResponse res)
					throws ServletException, IOException {
				res.setContentType("text/plain");
				res.getWriter().append("Hello World");
			}
		};
	}

	@Override
	protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
		return application.sources(SampleServletApplication.class);
	}

	public static void main(String[] args) throws Exception {
		SpringApplication.run(SampleServletApplication.class, args);
	}

}