如何從HttpSessionAttributeListener獲取請求對象

Question

如何從HttpSessionAttributeListener獲取請求對象以查找用戶的IP地址？

謝謝！

Answer 1

您需要實現ServletRequestListner才能找到遠程IP地址。

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());
    }

}

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