How to get browser information in JSP?

Question

How do you get Client IP and Browser information using JSP?

Answer 1

The following jsp will output your ip address and user-agent:

Your user-agent is: <%=request.getHeader("user-agent")%><br/>
Your IP address is: <%=request.getRemoteAddr()%><br/>

To find out what browser and/or OS the user is using, parse the user-agent header.

For example:

<%
String userAgent = request.getHeader("user-agent");
if (userAgent.indexOf("MSIE") > -1) {
  out.println("Your browser is Microsoft Internet Explorer<br/>");
}
%>

For a list of user agents, look here.

Answer 2

For the browser part you need to parse the reqeust's User-Agent section.

String browserType = request.getHeader("User-Agent");

There you'll find the relevant information...