[html] view plaincopy
定义在servlet-config.xml文件中。
以下是一个拦截器，它用来记录访问的ip和流量。
拦截器需要实现HandlerInterceptor接口，同时实现相应的方法。在PreHandler方法中，返回值如果是false，就会拦截住请求。
[java]
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
public class AccessStatisticsIntceptor implements HandlerInterceptor {
public static long access_num = 0;
public static Map IPMap = new HashMap();
public static Map urlMap = new HashMap();
@Override
public void afterCompletion(HttpServletRequest arg0,
HttpServletResponse arg1, Object arg2, Exception arg3)
throws Exception {
// TODO Auto-generated method stub
}
@Override
public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1,
Object arg2, ModelAndView arg3) throws Exception {
// TODO Auto-generated method stub
}
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response,
Object obj) throws Exception {
access_num += 1;
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");
Date now = new Date();
String ip = request.getHeader("x-forwarded-for");
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("WL-Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getRemoteAddr();
}
String url = request.getRequestURI() != null request.getRequestURI().toString() : null;
url= sdf.format(now) + "-" + url;
if(url != null && urlMap.containsKey(url)) {
urlMap.put(url, urlMap.get(url) + 1 );
} else if(url != null) {
urlMap.put(url, 1l);
}
String key = sdf.format(now) + "-" + ip;
if(IPMap.containsKey(key)) {
IPMap.put(key, IPMap.get(key) + 1 );
} else {
IPMap.put(key, 1l);
}
return true;
}
}