servlet 与spring aop，让AOP变得简单

转自：http://deny.xhblog.com/archives/2007/233803.shtml

1. web.xml中还是

<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/conf/spring/**/*-context.xml </param-value>
</context-param>

2. portal-context.xml中的一段

<bean
id="customerInfoServlet"
class="chances.card.portal.customer.CustomerInfoServlet"
>

<property name="infoPage">

<value>${portal.card.info.index}</value>
</property>
<property name="customerLoginUrl">

<value>${portal.card.loginUrl}</value>
</property>
<property name="cardSearcher">

<ref bean="cardSearcher"/>
</property>
<property name="cardManager">

<ref bean="cardManager"/>
</property>

</bean>

3. web.xml 中的一段配置

<servlet>
<servlet-name>customerLogin</servlet-name>
<servlet-class>
chances.card.commons.servlet.proxy.SpringServletProxy
</servlet-class>
<init-param>
<param-name>beanName</param-name>
<param-value>customerLoginServlet</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>customerLogin</servlet-name>
<url-pattern>/customerLogin</url-pattern>
</servlet-mapping>

----------------------------最早的servlet 的配置方法

<servlet>
<servlet-name>Test</servlet-name>
<display-name>Test</display-name>
<description>A test Servlet</description>
<servlet-class>test.Test</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Test</servlet-name>
<url-pattern>/Test</url-pattern>
</servlet-mapping>

4 . SpringServletProxy .java 类的代码

/**
* Created on 2007-08-16
* $Id $
* $Source $
* $Revision $
*/
package chances.card.commons.servlet.proxy;

import java.io.IOException;

import javax.servlet.Servlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import chances.commons.web.SpringWebUtils;

/**
* Servlet代理
*
* @author <a href="mailto:[e-mail]">hjd_668</a >
* @version 1.0
*
*/
public class SpringServletProxy extends HttpServlet {

private static final long serialVersionUID = -5712473045972662420L;

Servlet target;

/**
* (non-javadoc)
*
* @see javax.servlet.http.HttpServlet#service(javax.servlet.http.HttpServletRequest,
* javax.servlet.http.HttpServletResponse)
*/
protected void service(HttpServletRequest arg0, HttpServletResponse arg1)
throws ServletException, IOException {
target.service(arg0, arg1);
}

/**
* (non-javadoc)
*
* @see javax.servlet.GenericServlet#init(javax.servlet.ServletConfig)
*/
public void init(ServletConfig config) throws ServletException {
super.init(config);
String name = config.getInitParameter("beanName");
Object obj = SpringWebUtils.getBean(config.getServletContext(), name);
if (obj instanceof Servlet) {
target = (Servlet) obj;
} else {
throw new IllegalArgumentException(name);
}
target.init(config);
}

/**
* (non-javadoc)
*
* @see javax.servlet.GenericServlet#destroy()
*/
public void destroy() {
super.destroy();
target.destroy();
}
}