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发表时间：2005-04-06
针对“每次执行一个action都会导致重新创建interceptor对象”作了下改进
/*
* 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;
/**
* <p>Title: InterceptorActionProxy</p>
*
* <p>Description: 拦截器代理Action类</p>
*
* <p>Copyright: Copyright (c);北京邮电大学网络教育技术研究所[www.buticet.com] 2005</p>
*
* <p>Company: 北京邮电大学网络教育技术研究所[www.buticet.com] </p>
*
* @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 = InterceptorConfig.getInterceptor(interceptorList);;
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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|
发表时间：2005-04-06
/*
* 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;
/**
* <p>Title: InterceptorConfig</p>
*
* <p>Description: 配置文件读取类</p>
*
* <p>Copyright: Copyright (c);北京邮电大学网络教育技术研究所[www.buticet.com] 2005</p>
*
* <p>Company: 北京邮电大学网络教育技术研究所[www.buticet.com] </p>
*
* @author LJ-silver E-mail:LJ-silver@163.com
* @version 1.0
*/
public class InterceptorConfig {
private static HashMap config;
private static HashMap interceptor;
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 synchronized 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 synchronized 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 synchronized ActionInterceptor getInterceptor(String name); throws InstantiationException, IllegalAccessException, ClassNotFoundException{
if(interceptor == null);{
interceptor = new HashMap();;
}
if(interceptor.containsKey(name););{
return (ActionInterceptor);interceptor.get(name);;
}else{
ActionInterceptor actionInterceptor = (ActionInterceptor);Class.forName(name);.newInstance();;
interceptor.put(name,actionInterceptor);;
return actionInterceptor;
}
}
public static synchronized ActionInterceptor[] getInterceptor(List name); throws InstantiationException, IllegalAccessException, ClassNotFoundException{
ActionInterceptor[] actionInterceptor = new ActionInterceptor[name.size();];
for(int i = 0;i<name.size();;i++);{
actionInterceptor[i] = getInterceptor((String);name.get(i););;
}
return actionInterceptor;
}
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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|
发表时间：2005-04-06
/*
* 创建日期 2005-4-6
*
*/
package com.bupticet.strutsinterceptor;
import java.io.IOException;
import java.util.Enumeration;
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;
import org.apache.struts.config.ActionConfig;
/**
* <p>Title:PrintInfoInterceptor </p>
*
* <p>Description: 执行Action的前后以及异常抛出时均打印提示信息，用于调试</p>
*
* <p>Copyright: Copyright (c);北京邮电大学网络教育技术研究所[www.buticet.com] 2005</p>
*
* <p>Company: 北京邮电大学网络教育技术研究所[www.buticet.com] </p>
*
* @author LJ-silver E-mail:LJ-silver@163.com
* @version 1.0
*/
public class PrintInfoInterceptor implements ActionInterceptor{
static org.apache.log4j.Logger logger = org.apache.log4j.Logger.getLogger(PrintInfoInterceptor.class);;
/*
* @see com.bupticet.strutsinterceptor.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 {
logger.info("====================before run======================");;
logger.info("=====================================================================");;
for(Enumeration e = request.getAttributeNames();;e.hasMoreElements();;);{
Object o = e.nextElement();;
logger.info((String);o+":"+request.getAttribute((String);o););;
}
logger.info("=====================================================================");;
ActionConfig actionConfig = (ActionConfig);request.getAttribute("org.apache.struts.action.mapping.instance");;
String parameter = actionConfig.getParameter();;
if(null!=request.getParameter(parameter););{
logger.info((String);request.getParameter(parameter););;
}
logger.info("=====================================================================");;
return null;
}
/*
* @see com.bupticet.strutsinterceptor.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 {
logger.info("====================after run======================");;
}
/*
* @see com.bupticet.strutsinterceptor.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 {
logger.info("====================throw run======================");;
return null;
}
}
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