如何从HttpSessionAttributeListener获取请求对象

Question

如何从HttpSessionAttributeListener获取请求对象以查找用户的IP地址？

谢谢！

Answer 1

您需要实现ServletRequestListner才能找到远程ip addr。

import javax.servlet.ServletRequest;
import javax.servlet.ServletRequestEvent;
import javax.servlet.ServletRequestListener;
import javax.servlet.annotation.WebListener;

@WebListener
public class MyServletRequestListener implements ServletRequestListener {

    public void requestDestroyed(ServletRequestEvent servletRequestEvent) {
        ServletRequest servletRequest = servletRequestEvent.getServletRequest();
        System.out.println("ServletRequest destroyed. Remote IP="+servletRequest.getRemoteAddr());
    }

    public void requestInitialized(ServletRequestEvent servletRequestEvent) {
        ServletRequest servletRequest = servletRequestEvent.getServletRequest();
        System.out.println("ServletRequest initialized. Remote IP="+servletRequest.getRemoteAddr());
    }

}

参考：http://www.journaldev.com/1945/servlet-listener-example-servletcontextlistener-httpsessionlistener-and-servletrequestlistener