package com.fpcms.common.web.filter;
import java.io.IOException;
import java.util.Map;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.lang.StringUtils;
import org.apache.log4j.MDC;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.filter.OncePerRequestFilter;
import com.github.rapid.common.util.LogTraceUtil;
import com.github.rapid.common.util.Profiler;
import com.fpcms.common.util.Constants;
import com.fpcms.common.util.IpUtil;
import com.fpcms.common.util.SpiderUtil;
/**
* 存放在MDC中的数据,log4j可以直接引用并作为日志信息打印出来.
*
* <pre>
* 示例使用:
* log4j.appender.stdout.layout.conversionPattern=%d [%X{loginUserId}/%X{req.remoteAddr}/%X{traceId} - %X{req.requestURI}?%X{req.queryString}] %-5p %c{2} - %m%n
* </pre>
* @author badqiu
*/
public class LoggerMDCFilter extends OncePerRequestFilter implements Filter{
private static Logger log = LoggerFactory.getLogger(LoggerMDCFilter.class);
protected void doFilterInternal(HttpServletRequest request,HttpServletResponse response, FilterChain chain)throws ServletException,IOException {
try {
//示例为一个固定的登陆用户,请直接修改代码
if(SpiderUtil.isSpider(request)) {
MDC.put("loginUserId", SpiderUtil.getSpiderName(request.getHeader("User-Agent")));
}
MDC.put("req.requestURI", StringUtils.defaultString(request.getRequestURL().toString()));
MDC.put("req.queryString", StringUtils.defaultString(request.getQueryString()));
MDC.put("req.requestURIWithQueryString", request.getRequestURI() + (request.getQueryString() == null ? "" : "?"+request.getQueryString()));
String clientIp = IpUtil.getIpAddr(request);
MDC.put("req.remoteAddr", StringUtils.defaultString(clientIp));
Profiler.start(request.getServletPath());
//为每一个请求创建一个traceId,方便查找日志时可以根据ID查找出一个http请求所有相关日志
// LogTraceUtils完成的功能是: MDC.put("traceId",StringUtils.remove(UUID.randomUUID().toString(),"-"))
LogTraceUtil.beginTrace();
chain.doFilter(request, response);
logSpiderUserAgent(request, clientIp);
}finally {
Profiler.release();
Constants.LOGGER_DUMP_PROFILER.info(Profiler.dump());
clearMDC();
}
}
private void logSpiderUserAgent(HttpServletRequest request, String clientIp) {
if(SpiderUtil.isSpider(request)) {
String userAgent = request.getHeader("User-Agent");
String spiderName = SpiderUtil.getSpiderName(userAgent);
Constants.LOGGER_SPIDER.info(request.getRequestURL()+"\t"+clientIp+"\t"+spiderName+"\t");
}
}
private static void clearMDC() {
Map map = MDC.getContext();
if(map != null) {
map.clear();
}
}
}