org.springframework.web.context.support.HttpRequestHandlerServlet Maven / Gradle / Ivy
/*
* Copyright 2002-2006 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 org.springframework.web.context.support;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.HttpRequestHandler;
import org.springframework.web.context.WebApplicationContext;
/**
* Simple HttpServlet that delegates to an HttpRequestHandler bean defined
* in Spring's root web application context. The bean name must match the
* HttpRequestHandlerServlet servlet-name as defined in web.xml.
*
* This can for example be used to expose a single Spring remote exporter,
* such as HttpInvokerServiceExporter and HessianServiceExporter, per
* HttpRequestHandlerServlet definition. This is an alternative to defining
* remote exporters as beans in a DispatcherServlet context, leveraging
* the advanced mapping and interception facilities there.
*
* @author Juergen Hoeller
* @since 2.0
* @see org.springframework.web.HttpRequestHandler
* @see org.springframework.web.servlet.DispatcherServlet
*/
public class HttpRequestHandlerServlet extends HttpServlet {
private HttpRequestHandler target;
public void init() throws ServletException {
WebApplicationContext wac = WebApplicationContextUtils.getRequiredWebApplicationContext(getServletContext());
this.target = (HttpRequestHandler) wac.getBean(getServletName(), HttpRequestHandler.class);
}
protected void service(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
this.target.handleRequest(request, response);
}
}