spring filter配置特殊接口

web.xml文件

	<filter>
	    <filter-name>LoginFilter</filter-name>    
	    <filter-class>com.ia.lhc.filter.LoginFilter</filter-class>
	    <init-param>    
	        <param-name>excludedPages</param-name>     
    		<param-value>/series_parallel_case/server/api/Login</param-value>   
	    </init-param>    
	</filter>
	    
	<filter-mapping>
	   <filter-name>LoginFilter</filter-name>    
	   <url-pattern>/server/api/*</url-pattern>    
	</filter-mapping>

java文件

package com.ia.lhc.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

import org.apache.commons.lang3.StringUtils;

public class LoginFilter implements Filter{
	private String excludedPages;  
    private String[] excludedPageArray; 
	
	@Override
	public void destroy() {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
			throws IOException, ServletException {
		// TODO Auto-generated method stub
		HttpServletRequest httpRequest = (HttpServletRequest)request;
		
        boolean isExcludedPage = false;
        for (String page : excludedPageArray) { //判断是否在过滤url之外  
        	System.out.println("page= "+page);
        	System.out.println("getRequestURI= "+httpRequest.getRequestURI());
        	System.out.println("getServletPath= "+httpRequest.getServletPath());
            if(httpRequest.getRequestURI().equals(page)) {  
                isExcludedPage = true;  
                break;  
            }  
        }  
        System.out.println("isExcludedPage= "+isExcludedPage);
        if (isExcludedPage) {//在过滤url之外  
            chain.doFilter(request, response);  
        } else {//不在过滤url之外，判断session是否存在  
            HttpSession session =((HttpServletRequest) request).getSession();  
            if(session.getAttribute("useraccount") == null || (Boolean)session.getAttribute("useraccount") == false){
    			RequestDispatcher dispatcher = request.getRequestDispatcher("/page/index.jsp");
    			dispatcher.forward(request, response); 
    			return;
    		}else{
    			chain.doFilter(request, response);
    		}  
        }
	}

	@Override
	public void init(FilterConfig fConfig) throws ServletException {
		// TODO Auto-generated method stub
		excludedPages =fConfig.getInitParameter("excludedPages");
        if(StringUtils.isNotEmpty(excludedPages)) {  
            excludedPageArray =excludedPages.split(",");
        }  
        return;  
		
	}

}