自己做了个支持DispatchAction的struts拦截器

lijiangt · 发表于 2005-4-1 21:34:01

/*
* 创建日期 2005-3-31
*
*/
package com.bupticet.strutsinterceptor;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
/**
* Title: ActionInterceptor
*
* Description: 拦截器接口
*
* Copyright: Copyright (c)北京邮电大学网络教育技术研究所[www.buticet.com] 2005
*
* Company: 北京邮电大学网络教育技术研究所[www.buticet.com]
*
* @author LJ-silver E-mail:LJ-silver@163.com
* @version 1.0
*/
public interface ActionInterceptor {
/**
* Called before an action is executed
*
*@param mapping The action mapping
*@param form The action form
*@param request The request object
*@param response The response object
*@exception IOException If something goes wrong
*@exception ServletException If something goes wrong
*/
public ActionForward beforeAction(ActionMapping mapping,
ActionForm form, HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException;
/**
* Called after an action is executed
*
*@param mapping The action mapping
*@param form The action form
*@param request The request object
*@param response The response object
*@exception IOException If something goes wrong
*@exception ServletException If something goes wrong
*/
public void afterAction(ActionMapping mapping,
ActionForm form, HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException;
/**
* Called when exception is throwed
*
*/
public ActionForward throwsAction(ActionMapping mapping,
ActionForm form, HttpServletRequest request,
HttpServletResponse response,Exception e)
throws Exception;
}

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lijiangt · 发表于 2005-4-1 21:48:07

/*
* 创建日期 2005-3-31
*
*/
package com.bupticet.strutsinterceptor;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.springframework.web.struts.DelegatingActionProxy;
/**
* Title: InterceptorActionProxy
*
* Description: 拦截器代理Action类
*
* Copyright: Copyright (c)北京邮电大学网络教育技术研究所[www.buticet.com] 2005
*
* Company: 北京邮电大学网络教育技术研究所[www.buticet.com]
*
* @author LJ-silver E-mail:LJ-silver@163.com
* @version 1.0
*/
public class InterceptorActionProxy extends DelegatingActionProxy {
static org.apache.log4j.Logger logger = org.apache.log4j.Logger.getLogger(InterceptorActionProxy.class);
/**
* Pass the execute call on to the Spring-managed delegate Action.
* @see #getDelegateAction
*/
public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request,
HttpServletResponse response) throws Exception {
Action delegateAction = getDelegateAction(mapping);
ActionForward forward = null;
List interceptorList = InterceptorConfig.getInterceptorList(request);
int size = interceptorList.size();
if(size > 0){
ActionInterceptor[] interceptorArray = new ActionInterceptor[size];
for(int i = 0;i<size;i++){
interceptorArray[i] = (ActionInterceptor)Class.forName((String)interceptorList.get(i)).newInstance();
}
try{
for(int i = 0;i<size;i++){
forward = interceptorArray[i].beforeAction(mapping, form, request, response);
if(forward!=null){
return forward;
}
}
forward = delegateAction.execute(mapping, form, request, response);
for(int i = 0;i<size;i++){
interceptorArray[i].afterAction(mapping, form, request, response);
}
}catch(Exception e){
e.printStackTrace();
logger.error("In execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response), Exception Occured ! Info :" + e.getLocalizedMessage());
for(int i = 0;i<size;i++){
forward = interceptorArray[i].throwsAction(mapping, form, request, response,e);
if(forward!=null){
return forward;
}
}
}
}else{
forward = delegateAction.execute(mapping, form, request, response);
}
return forward;
}
}

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lijiangt · 发表于 2005-4-1 21:49:17

/*
* 创建日期 2005-3-31
*
*/
package com.bupticet.strutsinterceptor;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.apache.struts.config.ActionConfig;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
/**
* Title: InterceptorConfig
*
* Description: 配置文件读取类
*
* Copyright: Copyright (c)北京邮电大学网络教育技术研究所[[url]www.buticet.com][/url] 2005
*
* Company: 北京邮电大学网络教育技术研究所[[url]www.buticet.com][/url]
*
* @author LJ-silver E-mail:LJ-silver@163.com
* @version 1.0
*/
public class InterceptorConfig {
private static HashMap config;
private final static String filePathName = "/struts-interceptor.xml";
static org.apache.log4j.Logger logger = org.apache.log4j.Logger.getLogger(InterceptorConfig.class);
public static void init(){
if(config==null){
initResource();
}
}
private static void initResource(){
Document document = null;
try{
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
InputStream is = InterceptorConfig.class.getResourceAsStream(filePathName);
document = db.parse(is);
Element root = document.getDocumentElement();
NodeList interceptors = root.getElementsByTagName("interceptor-definition");
Map map = new HashMap();
for(int i = 0;i<interceptors.getLength();i++){
Element interceptor = (Element) interceptors.item(i);
if(map.containsKey(interceptor.getAttribute("name"))){
logger.error("In initResource(), Exception Occured !Info :不能重复配置interceptor-definition元素:"+interceptor.getAttribute("name"));
}else{
map.put(interceptor.getAttribute("name"),interceptor.getAttribute("type"));
}
}
NodeList actions = document.getElementsByTagName("action");
config = new HashMap();
for(int i = 0;i<actions.getLength();i++){
Element action = (Element) actions.item(i);
String path = action.getAttribute("path");
NodeList methods = action.getElementsByTagName("method");
Map temp = new HashMap();
for(int j = 0;j<methods.getLength();j++){
Element method = (Element) methods.item(j);
String name = method.getAttribute("name");
List actionInterceptorList = new ArrayList();
NodeList actionInterceptors = method.getElementsByTagName("interceptor");
for(int k = 0;k<actionInterceptors.getLength();k++){
Element actionInterceptor = (Element) actionInterceptors.item(k);
String interceptorName = actionInterceptor.getAttribute("name");
if(map.containsKey(interceptorName)){
actionInterceptorList.add(map.get(interceptorName));
}else{
logger.error("In initResource(), Exception Occured !Info :没有"+interceptorName+"对应的interceptor-definition元素!" );
}
}
String[] allMethods = name.split(",");
for(int m = 0;m<allMethods.length;m++){
if(temp.containsKey(allMethods[m])){
logger.error("In initResource(), Exception Occured !Info :不能重复配置method元素:"+allMethods[m] );
}else{
temp.put(allMethods[m],actionInterceptorList);
}
}
}
if(config.containsKey(path)){
logger.error("In initResource(), Exception Occured !Info :不能重复配置path元素:"+path );
}else{
config.put(path,temp);
}
}
}catch(IllegalArgumentException e){
logger.error("In initResource(), Exception Occured ! 找不到文件/WEB-INF/classes/struts-interceptor.xml！,Info :" + e.getLocalizedMessage());
e.printStackTrace();
}catch(SAXException e){
logger.error("In initResource(), Exception Occured ! XML文件/WEB-INF/classes/struts-interceptor.xml语法错误！,Info :" + e.getLocalizedMessage());
e.printStackTrace();
}catch(Exception e){
logger.error("In initResource(), Exception Occured !Info :" + e.getLocalizedMessage());
e.printStackTrace();
}
}
public static List getInterceptorList(String path,String method){
init();
List list = new ArrayList();
if(config.containsKey(path)){
HashMap map = (HashMap)config.get(path);
if(map.containsKey(method)){
list = (ArrayList)map.get(method);
}
}
return list;
}
public static List getInterceptorList(HttpServletRequest request){
ActionConfig actionConfig = (ActionConfig)request.getAttribute("org.apache.struts.action.mapping.instance");
String path = actionConfig.getPath();
String method = null;
String parameter = actionConfig.getParameter();
if(parameter!=null&&!"".equals(actionConfig.getParameter())){
method = request.getParameter(parameter);
}
if(method==null||"".equals(method)){
method = "execute";
}
return getInterceptorList(path,method);
}
public static void test(){
init();
for(Iterator it = config.keySet().iterator();it.hasNext();){
String key = (String)it.next();
System.out.println(key);
Map map = (HashMap)config.get(key);
for(Iterator ite = map.keySet().iterator();ite.hasNext();){
String key2 = (String)ite.next();
System.out.println("------------------------"+key2);
List list = (ArrayList)map.get(key2);
for(Iterator iter = list.iterator();iter.hasNext();){
System.out.println("------------------------"+" "+"------------------------"+(String)iter.next());
}
}
}
}
}

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lijiangt · 发表于 2005-4-1 21:50:07

/*
* 创建日期 2005-3-31
*
*/
package com.bupticet.example.struts.interceptor;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.struts.Globals;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;
import com.bupticet.strutsinterceptor.ActionInterceptor;
/**
* Title:
*
* Description:
*
* Copyright: Copyright (c)北京邮电大学网络教育技术研究所[[url]www.buticet.com][/url] 2005
*
* Company: 北京邮电大学网络教育技术研究所[[url]www.buticet.com][/url]
*
* @author LJ-silver
* @version 1.0
*/
public class LoginPermissionInterceptor implements ActionInterceptor {
/*
* @see com.bupticet.strusinterceptor.ActionInterceptor#beforeAction(org.apache.struts.action.ActionMapping, org.apache.struts.action.ActionForm, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
*/
public ActionForward beforeAction(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
HttpSession session = request.getSession();
if(session.getAttribute(com.bupticet.example.Constants.USER_ATTRIBUTE)!=null){
ActionMessages errors = new ActionMessages();
errors.add(ActionMessages.GLOBAL_MESSAGE ,new ActionMessage("error.login.alreadylogin"));
request.setAttribute(Globals.ERROR_KEY, errors);
return mapping.findForward("failure");
}
return null;
}
/*
* @see com.bupticet.strusinterceptor.ActionInterceptor#afterAction(org.apache.struts.action.ActionMapping, org.apache.struts.action.ActionForm, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
*/
public void afterAction(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
}
/*
* @see com.bupticet.strusinterceptor.ActionInterceptor#throwsAction(org.apache.struts.action.ActionMapping, org.apache.struts.action.ActionForm, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, java.lang.Exception)
*/
public ActionForward throwsAction(
ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response,
Exception e)
throws Exception {
return null;
}
}

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lijiangt · 发表于 2005-4-1 21:52:38

<?xml version="1.0" encoding="UTF-8"?>
<struts-interceptor>
<interceptor-definition name="login" type="com.bupticet.example.struts.interceptor.LoginPermissionInterceptor"/>
<action path="/example/loginT">
<method name="login">
<interceptor name="login"/>
</method>
</action>
</struts-interceptor>

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lijiangt · 发表于 2005-4-1 21:55:12

我在这里面也弄了个拦截器，不过拦截DispatchAction里面的自定义方法不太好用。

<bean id="transactionManager"
class="org.springframework.orm.hibernate.HibernateTransactionManager"
lazy-init="true">
<property name="sessionFactory">
<ref bean="hibernateSessionFactory"/>
</property>
</bean>
<bean id="userDao" class="com.bupticet.example.dao.impl.UserDaoImpl" lazy-init="true">
<property name="sessionFactory">
<ref bean="hibernateSessionFactory"/>
</property>
</bean>
<bean id="userDaoProxy" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
<property name="transactionManager">
<ref bean="transactionManager" />
</property>
<property name="target">
<ref local="userDao" />
</property>
<property name="transactionAttributes">
<props>
<prop key="saveOrUpdate*">PROPAGATION_REQUIRED</prop>
<prop key="delete*">PROPAGATION_REQUIRED</prop>
<prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>
<prop key="load*">PROPAGATION_REQUIRED,readOnly</prop>
</props>
</property>
</bean>
<bean id="articleDao" class="com.bupticet.example.dao.impl.ArticleDaoImpl" lazy-init="true">
<property name="sessionFactory">
<ref bean="hibernateSessionFactory"/>
</property>
</bean>
<bean id="articleDaoProxy" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
<property name="transactionManager">
<ref bean="transactionManager" />
</property>
<property name="target">
<ref local="articleDao" />
</property>
<property name="transactionAttributes">
<props>
<prop key="login*">PROPAGATION_REQUIRED</prop>
<prop key="saveOrUpdate*">PROPAGATION_REQUIRED</prop>
<prop key="delete*">PROPAGATION_REQUIRED</prop>
<prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>
<prop key="load*">PROPAGATION_REQUIRED,readOnly</prop>
<prop key="check*">PROPAGATION_REQUIRED,readOnly</prop>
</props>
</property>
</bean>
<bean name="/example/loginT" class="org.springframework.aop.framework.ProxyFactoryBean">
<!--use dynamic aop or cglib
<property name="proxyInterfaces">
<value>com.bupticet.example.struts.ILoginTAction</value>
</property>
-->
<property name="proxyTargetClass">
<value>true</value>
</property>
<property name="target">
<ref local="loginT" />
</property>
<property name="interceptorNames">
<value>LoginTPointcutAdvisor</value>
</property>
</bean>
<bean id="LoginTPointcutAdvisor"
class="org.springframework.aop.support.RegexpMethodPointcutAdvisor">
<property name="advice">
<ref local="LoginTInterceptor" />
</property>
<property name="patterns">
<list>
<value>.*</value>
</list>
</property>
</bean>
<bean id="LoginTInterceptor" class="com.bupticet.example.strutsaop.LoginTInterceptor"/>
<bean id="loginT" class="com.bupticet.example.struts.LoginTAction" singleton="false">
<property name="userDao">
<ref bean="userDaoProxy" />
</property>
</bean>
<bean name="/example/userT" class="com.bupticet.example.struts.UserTAction" singleton="false">
<property name="userDao">
<ref bean="userDaoProxy" />
</property>
</bean>
<bean name="/example/userF" class="com.bupticet.example.struts.UserFAction" singleton="false">
<property name="userDao">
<ref bean="userDaoProxy" />
</property>
</bean>
<bean name="/example/articleT" class="com.bupticet.example.struts.ArticleTAction" singleton="false">
<property name="articleDao">
<ref bean="articleDaoProxy" />
</property>
</bean>
<bean name="/example/articleF" class="com.bupticet.example.struts.ArticleFAction" singleton="false">
<property name="articleDao">
<ref bean="articleDaoProxy" />
</property>
</bean>

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lijiangt · 发表于 2005-4-1 21:56:35

/*
* 创建日期 2005-3-30
*
*/
package com.bupticet.example.strutsaop;
import java.io.Serializable;
import java.lang.reflect.Method;
import java.util.Enumeration;
import javax.servlet.http.HttpServletRequest;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import org.apache.struts.config.ActionConfig;
/**
* Title:
*
* Description:
*
* Copyright: Copyright (c)北京邮电大学网络教育技术研究所[[url]www.buticet.com][/url] 2005
*
* Company: 北京邮电大学网络教育技术研究所[[url]www.buticet.com][/url]
*
* @author LJ-silver
* @version 1.0
*/
public class LoginTInterceptor implements MethodInterceptor, Serializable {
static org.apache.log4j.Logger logger = org.apache.log4j.Logger.getLogger(LoginTInterceptor.class);
/*
* @see org.aopalliance.intercept.MethodInterceptor#invoke(org.aopalliance.intercept.MethodInvocation)
*/
public Object invoke(MethodInvocation arg0) throws Throwable {
logger.info("====================before run======================");
System.out.println("====================before run======================"+arg0.getMethod().getName());
Method method = arg0.getMethod();
Object[] args = arg0.getArguments();
if(args[2]instanceof HttpServletRequest){
System.out.println("HttpServletRequest");
System.out.println("=====================================================================");
HttpServletRequest request = (HttpServletRequest)args[2];
for(Enumeration e = request.getAttributeNames();e.hasMoreElements();){
Object o = e.nextElement();
System.out.println((String)o+"::::"+request.getAttribute((String)o));
}
System.out.println("=====================================================================");
ActionConfig actionConfig = (ActionConfig)request.getAttribute("org.apache.struts.action.mapping.instance");
String parameter = actionConfig.getParameter();
if(null!=request.getParameter(parameter)){
String methodName = (String)request.getParameter("method");
if("login".equals(methodName)){
System.out.println("before run action:login");
}
}
}
Object result = arg0.proceed();
logger.info("====================after run======================");
System.out.println("====================after run======================");
return result;
}
}

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linzchang · 发表于 2005-4-3 22:42:45

现在是不是很少人用struts阿？感觉struts的标签和配置都太繁琐了

hantsy · 发表于 2005-4-4 08:57:50

Post by linzchang
现在是不是很少人用struts阿？感觉struts的标签和配置都太繁琐了

按照国外的调查，ava web 开发用人70%都要求会struts

linzchang · 发表于 2005-4-4 23:26:33

Post by hantsy
按照国外的调查，ava web 开发用人70%都要求会struts

那么说struts还是不错的，努力学习中：）

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自己做了个支持DispatchAction的struts拦截器

struts-interceptor.xml

spring配置文件applicationContext.xml片断