basesecuritymanager.java

一个简单的java邮件系统源码

package com.easyjf.web.interceptor.security;

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.servlet.http.HttpServletResponse;

import com.easyjf.util.AntPathMatcher;

public abstract class BaseSecurityManager implements ISecurityManager {

	private Map url2ConditionMap=new HashMap();
		
	private ICondition defaultCondition;
		
	public BaseSecurityManager() throws SecurityException{
		init();		
	}
	
	abstract protected void init() throws SecurityException;
	
	public Map getUrl2ConditionMap() {
		return url2ConditionMap;
	}

	public void setUrl2ConditionMap(Map url2ConditionMap) {
		this.url2ConditionMap = url2ConditionMap;
	}

	public List findCondition(HttpServletRequest request,
			HttpServletResponse response) throws SecurityException{
		// TODO Auto-generate  method stub
		AntPathMatcher pathMatcher=new AntPathMatcher();
		List matchCondition=new ArrayList();
		String url=this.mergeUrl(request);
		if(this.getUrl2ConditionMap().size()>0){		
			for(Iterator it=this.getUrl2ConditionMap().keySet().iterator();it.hasNext();){
				String pattern=(String)it.next();			
				if(pathMatcher.match(pattern, url)){				
					matchCondition.add(this.url2ConditionMap.get(pattern));
				}					
			}
		}else{
			matchCondition.add(this.getDefaultCondition());   
		}
		return matchCondition;
	}
	
	protected void registerCondition(String urlPattern,ICondition condition){
		if(urlPattern.equals("/*")){
			this.defaultCondition=condition;
		}else{
			this.url2ConditionMap.put(urlPattern, condition);
		}		
	}

	public ICondition getDefaultCondition() {
		return defaultCondition;
	}

	public void setDefaultCondition(ICondition defaultCondition) {
		this.defaultCondition = defaultCondition;
	}

	protected String mergeConditionName(ICondition condition){
		return condition.getClass().getName()+condition.getName();
	}	
	
	protected String mergeUrl(HttpServletRequest request){
		String servletPath = request.getPathInfo();
		if (servletPath == null)
			servletPath = request.getServletPath();
		return servletPath;		
	}
}