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8.0

Get Client IP info from a Servlet into a Class

Asked by jandersonwidener in Java Server Pages (JSP), TCP/IP, Java Servlets

Tags: java, InetAddress, Host IP, Client Request, Server Response, Servlet, Class, beginner java

I can successfully get the Host IPAddress of the requesting client to return to the screen fine in (File 1 my.jsp) and on all .jps page(s) via my serializable servlet session thanks to File 2 ViewDefinition Class.

But when I try to Add the IP information to send that info to an email notification not just return it to the JSP Screen I get null or it blows up the page no matter how I try it using File 3 MailNotification Class, File 4 Email Notifications I stream in vis File 5 webconfig which assigns the email address as a global variable and my File 6 which Processes the Email to be sent.

I know what I need to do -- also carry the getSessionIPAddress into other classes
but cannot seem to figure out how can I extend the instance life of the servlet variable  this.sessionIPAddress and assign it to a variable to email ?

Please help.

Thanks sooo much !

Should I add the String to my Default constructor or something else ?
When I try to make getSessionIPAddress static to carry the IP, the IP is returned but then the rest of my surrounding code blows out... 
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------------------------------------------ File 1 ----------------------------------------------------
<!-- /WEB-INF/jsp/my.jsp -->
<jsp:useBean id="viewDefinition" scope="request" class="mytld.mycompany.projectpackage.MVC_view.ViewDefinition" />
<jsp:getProperty name="viewDefinition" property="sessionIPAddress"/>
<!-- this works fine -->
 
------------------------------------------ File 2 ----------------------------------------------------
/** ViewDefiition **/
package mytld.mycompany.projectpackage.MVC_view;
 
public class ViewDefinition implements java.io.Serializable {
  public String sessionIPAddress;
 
 /**   * Default Constructor   **/
  public ViewDefinition() {
  }
 
// and accessor method ::.
  public String getSessionIPAddress() {
	  return sessionIPAddress;
  }
 
// and mutator method ::.
  public void setSessionIPAddress(String sessionIPAddress) {
	  this.sessionIPAddress = sessionIPAddress;
  }
} // end class
 
------------------------------------------ File 3 ----------------------------------------------------
/** Mail notification **/
package mytld.mycompany.projectpackage.MVC_model;
 
 
public class MailNotification implements Serializable  {
private static final String IP_PATTERN =  "${userhostip}";
 
 /**   * Default Constructor   **/
public MailNotification() {
}
 
public String getMessage() {
 
// I know this is WRONG -- it works but blow out other code... Any ideas ?
ViewDefinition ipview = new ViewDefinition();		
String reapIP = ipview.getSessionIPAddress();
 
String text = message;
text = replace(text, IP_PATTERN, reapIP);
return text;
}
 
} // end class
------------------------------------------ File 4  ----------------------------------------------------
<!-- /WEB-INF/notifications.xml -->
 
<notification notificationType="EMAIL_IP">
<subject>IP Alert</subject>
<message><![CDATA[
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252" />
<title>IP Notice</title>
</head><body>
    <p style="${style}">User's IP: <strong>${userhostip}</strong></p>
</body></html>
]]></message>
<mime_type>text/html</mime_type>
</notification>
------------------------------------------ File 5  ----------------------------------------------------
 
<!--  /WEB-INF/webconfig.xml -->
 
<servlet>
<servlet-name>controlservlet</servlet-name>
<servlet-class>mytld.mycompany.projectpackage.controller.ControlServlet</servlet-class>
<init-param>
<description>Email Destination</description>
<param-name>infosecEmail</param-name>
<param-value>myTargetEmail@myDomainName.tld</param-value>
</init-param>
</servlet>
 
------------------------------------------ File 6  ----------------------------------------------------
/** Processor Class **/
package mytld.mycompany.projectpackage.controller;
 
import java.io.IOException;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
 
import mytld.mycompany.projectpackage.MVC_model.*;
import mytld.mycompany.projectpackage.MVC_view.*;
 
try {
MailNotification notification = MailNotification.loadNotification(ctx.getResourceAsStream("/WEB-INF/notifications.xml"), NotificationType.EMAIL_IP);
Util.sendMail(Util.INFOSEC_EMAIL, Util.DEFAULT_FROM, notification.getSubject(), notification.getMessage(resetAccount), notification.getMimeType());
catch (Exception mex) {
mex.printStackTrace();
logger.log(Logger.ERROR, "IP Error +mex.getMessage(), request.getRemoteAddr()); // it works here ? Why cant I pass the HostInetAddress to the Email Message Object ? AUURRGGGHH ! ;)
}							
return viewDefinition;
}
break;
[+][-]10/19/09 06:36 AM, ID: 25604995Accepted Solution

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About this solution

Zones: Java Server Pages (JSP), TCP/IP, Java Servlets
Tags: java, InetAddress, Host IP, Client Request, Server Response, Servlet, Class, beginner java
Sign Up Now!
Solution Provided By: jandersonwidener
Participating Experts: 1
Solution Grade: A
 
[+][-]10/13/09 05:22 PM, ID: 25566151Expert Comment

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[+][-]10/19/09 08:51 AM, ID: 25606336Expert Comment

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