handlerinterceptoradapter.java

来自「一个关于Spring框架的示例应用程序,简单使用,可以参考.」· Java 代码 · 共 58 行

/*
 * Copyright 2002-2004 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.servlet.handler;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

/**
 * Abstract adapter class for the HandlerInterceptor interface,
 * for simplified implementation of pre-only/post-only interceptors.
 * @author Juergen Hoeller
 * @since 05.12.2003
 */
public abstract class HandlerInterceptorAdapter implements HandlerInterceptor {

	/**
	 * This implementation always returns true.
	 */
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
	    throws Exception {
		return true;
	}

	/**
	 * This implementation is empty.
	 */
	public void postHandle(
			HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView)
			throws Exception {
	}

	/**
	 * This implementation is empty.
	 */
	public void afterCompletion(
			HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
			throws Exception {
	}

}