spring 3.1.0.M 注解MVC + filter + AOP_spring mvc 3.1 aspect-优快云博客

本文详细介绍了一个基于Spring框架的整合案例，包括配置文件设置、控制器编写、过滤器实现及AOP应用等内容。通过web.xml配置Spring环境，定义DispatcherServlet处理请求，并实现自定义过滤器和切面增强。

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导包

spring 3.1的包全导入 + commons-logging.jar + servlet-api.jar + aopalliance.jar + aspectjrt.jar + aspectjweaver.jar + cglib-nodep-2.1_3.jar

web,xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>springDemo</display-name>
  <welcome-file-list>
  	<welcome-file>index.do</welcome-file>
  </welcome-file-list>
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/demo.xml</param-value>
  </context-param>
  <servlet>
    <servlet-name>springContent</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>/WEB-INF/demo.xml</param-value>
    </init-param>
  </servlet>
  <servlet-mapping>
    <servlet-name>springContent</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>
  <filter>
    <filter-name>DelegatingFilterProxy</filter-name>
    <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
    <init-param>
      <param-name>targetBeanName</param-name>
      <param-value>filter_saveuserinfo</param-value>
    </init-param>
    <init-param>
      <param-name>targetFilterLifecycle</param-name>
      <param-value>true</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>DelegatingFilterProxy</filter-name>
    <url-pattern>*.do</url-pattern>
  </filter-mapping>
</web-app>

spring配置文件demo.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:cache="http://www.springframework.org/schema/cache"
	xmlns:context="http://www.springframework.org/schema/context" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
	xmlns:jee="http://www.springframework.org/schema/jee" xmlns:jms="http://www.springframework.org/schema/jms"
	xmlns:lang="http://www.springframework.org/schema/lang" xmlns:mvc="http://www.springframework.org/schema/mvc"
	xmlns:oxm="http://www.springframework.org/schema/oxm" xmlns:p="http://www.springframework.org/schema/p"
	xmlns:task="http://www.springframework.org/schema/task" xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:util="http://www.springframework.org/schema/util"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
		http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-3.1.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
		http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.1.xsd
		http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.1.xsd
		http://www.springframework.org/schema/jms http://www.springframework.org/schema/jms/spring-jms-3.1.xsd
		http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-3.1.xsd
		http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
		http://www.springframework.org/schema/oxm http://www.springframework.org/schema/oxm/spring-oxm-3.1.xsd
		http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.1.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
		http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.1.xsd">

	<context:annotation-config />
	<context:component-scan base-package="com.netel" />
	<aop:aspectj-autoproxy />
		
</beans>

controller

package com.netel.web;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class Controller_index {
	
	@RequestMapping("/index.do")
	public String doit(){
		
		System.out.println("进入controller");
		
		return "index.jsp";
	}
}

filter

package com.netel.web;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.springframework.stereotype.Component;


@Component("filter_saveuserinfo")
public class Filter_saveUserInfo implements Filter {

    /**
     * Default constructor. 
     */
    public Filter_saveUserInfo() {
    }

	/**
	 * @see Filter#destroy()
	 */
	public void destroy() {
	}

	/**
	 * @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
	 */
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
		System.out.println("进入filter");
		chain.doFilter(request, response);
	}

	/**
	 * @see Filter#init(FilterConfig)
	 */
	public void init(FilterConfig fConfig) throws ServletException {
	}

}

AOP

package com.netel.service;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.stereotype.Component;

@Aspect
@Component
public class AOP_loginfo {

	/**
	 * 所有带RequestMapping注解的方法
	 */
	private final static String el = "@annotation(org.springframework.web.bind.annotation.RequestMapping)";

	@Before(el)
	public void before() {
		System.out.println("执行之前");
	}

	@After(el)
	public void after() {
		System.out.println("执行之后");
	}

	@Around(el)
	public Object around(ProceedingJoinPoint p) {
		for (Object obj : p.getArgs()) {
			System.out.println("参数:" + obj);
		}
		Object ob = null;

		try {
			System.out.println("around前");
			ob = p.proceed();
			System.out.println("around后");
		} catch (Throwable e) {
			e.printStackTrace();
		}

		return ob;
	}
	
	@AfterThrowing(value = el, throwing="e")
	public void throwing(Exception e){
		System.out.println("出异常了"+e);
	}

}

发布运行，控制台输出

进入filter
执行之前
around前
进入controller
执行之后
around后