Java tutorial
/** * Copyright (c) 2015, adar.w (adar.w@outlook.com) * * http://www.smoe.me * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package me.smoe.lzy.filter; import java.io.IOException; import java.net.URLDecoder; import javax.servlet.Filter; import javax.servlet.FilterChain; import javax.servlet.FilterConfig; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.lang.StringUtils; import me.smoe.lzy.common.Constants; import me.smoe.lzy.entity.bo.User; import me.smoe.lzy.log.Logger; /** * */ public class AccessLogFilter implements Filter { @Override public void init(FilterConfig filterConfig) throws ServletException { } @Override public void destroy() { } @Override public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException { HttpServletRequest request = (HttpServletRequest) req; HttpServletResponse response = (HttpServletResponse) res; logAccessAPI(request); chain.doFilter(request, response); } /* * ? */ private void logAccessAPI(HttpServletRequest request) { try { User user = (User) request.getSession().getAttribute(Constants.SESSION_USER); String userId = user != null ? user.getId() : "NOT_LOGIN"; String remoteAddr = request.getRemoteAddr(); String method = request.getMethod(); String requestURI = request.getRequestURI(); String userAgent = StringUtils.defaultString(request.getHeader("User-Agent")); String queryString = request.getQueryString(); if (queryString != null) { queryString = URLDecoder.decode(request.getQueryString(), Constants.CHARSET); } requestURI = requestURI + (StringUtils.isNotEmpty(queryString) ? ("?" + queryString) : StringUtils.EMPTY); Logger.getRestAccessLogger().info( String.format("[%s] [%s] [%s] %s [%s]", userId, remoteAddr, method, requestURI, userAgent)); } catch (Exception e) { Logger.getRestAccessLogger().warn("AccessAPI logger error: " + e.getMessage(), e); } } }