怎样获取action的name或者method

package cn.com.faqm.tool;

import java.io.IOException;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;

import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

public class OpFilter implements Filter {

	protected Map<String, String> userSessionIdMap = new HashMap<String, String>();

	public void init(FilterConfig filterConfig) throws ServletException {
	}

		public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterchain) throws IOException, ServletException {

		HttpServletRequest httpRequest = (HttpServletRequest) servletRequest;
		HttpSession session = httpRequest.getSession();
		
		//actId为空时不进行处理
		if (servletRequest.getParameter("actId") != null && !servletRequest.getParameter("actId").equals("")) {
			String reqPath = httpRequest.getServletPath();
			//获取所有请求路径，只对".html"结尾的请求进行处理
			if(reqPath.endsWith(".html")){
				String userId = httpRequest.getParameter("userId");
				String sessionId = session.getId();
				//获取所有页面上传入的属性
				Enumeration en = servletRequest.getParameterNames();
				StringBuffer params = new StringBuffer();
				String paramName = "";
				String paramValue = "";
				while(en.hasMoreElements()){	//遍历所有属性，对有值的进行组装
					paramName = en.nextElement().toString();
					paramValue = servletRequest.getParameter(paramName);
					if(!paramName.equals("start")&&!paramName.equals("persize")){	//排除用于分页的两个属性
						if(paramValue!=null&&!paramValue.equals("")){
							 params.append("参数").append(paramName).append("->").append(paramValue).append(" - ");
						 }
					}
				}
				
				if(userId!=null&&!userId.equals("")){	//登录时才能获取到userId
					userSessionIdMap.put(sessionId, userId);	//保存对应的sessionId和userId
//					SysLogger.log(userId, "用户"+userId+"登录系统", params.toString().substring(0, params.toString().length()-3), sessionId);
				}else{
					//登录以后获取不到userId，通过sessionId从userSessionIdMap中获取userId
					if(userSessionIdMap.get(sessionId)!=null && !userSessionIdMap.get(sessionId).equals("")){
//						SysLogger.log(userSessionIdMap.get(sessionId), "发起请求->"+reqPath, params.toString().substring(0, params.toString().length()-3), sessionId);
					}
				}
			}
		}
		
		filterchain.doFilter(servletRequest, servletResponse);
	}

	public void destroy() {
	}
}