java获取用户登录ip、浏览器信息、SessionId

1、获取用户登录ip

//获取用户登录ip;
String loginIp = request.getHeader("X-Forwarded-For");
if (loginIp == null || loginIp.length() == 0 || "unknown".equalsIgnoreCase(loginIp)) {
    loginIp = request.getHeader("X-Real-IP");
}
if (loginIp == null || loginIp.length() == 0 || "unknown".equalsIgnoreCase(loginIp)) {
    loginIp = request.getHeader("Proxy-Client-IP");
}
if (loginIp == null || loginIp.length() == 0 || "unknown".equalsIgnoreCase(loginIp)) {
    loginIp = request.getHeader("WL-Proxy-Client-IP");
}
if (loginIp == null || loginIp.length() == 0 || "unknown".equalsIgnoreCase(loginIp)) {
    loginIp = request.getHeader("HTTP_CLIENT_IP");
}
if (loginIp == null || loginIp.length() == 0 || "unknown".equalsIgnoreCase(loginIp)) {
    loginIp = request.getRemoteAddr();
}

2、获取用户所使用的浏览器信息

/**
*获取浏览器信息;
*/
String ua = request.getHeader("User-Agent");
//转成UserAgent对象
UserAgent userAgent = UserAgent.parseUserAgentString(ua); 
Browser browser = userAgent.getBrowser();
String browserInfo=browser.toString();//浏览器名

3、获取用户SessionId

request.getSession().getId();