How to extract IP Address in Spring MVC Controller get call

Question

I am working on Spring MVC controller project in which I am making a GET URL call from the browser -  Below is the url by which I am making a GET call from the browser -  http   127 0 0 1 8080 testweb processing workflow test amp conf 20140324 amp dc all   And below is the code in which the call comes after hitting at the browser -       RequestMapping value    processing   method   RequestMethod GET  public  ResponseBody ProcessResponse processData  RequestParam  workflow   final String workflow       RequestParam  conf   final String value   RequestParam  dc   final String dc             System out println workflow           System out println value           System out println dc               some other code         Problem Statement -  Now is there any way  I can extract IP Address from some header  Meaning I  would like to know from which  IP Address  call is coming  meaning whoever is calling above URL  I need to know their IP Address  Is this possible to do

User · Answer

private static final String   IP HEADER CANDIDATES                  quot X-Forwarded-For quot                quot Proxy-Client-IP quot                quot WL-Proxy-Client-IP quot                quot HTTP X FORWARDED FOR quot                quot HTTP X FORWARDED quot                quot HTTP X CLUSTER CLIENT IP quot                quot HTTP CLIENT IP quot                quot HTTP FORWARDED FOR quot                quot HTTP FORWARDED quot                quot HTTP VIA quot                quot REMOTE ADDR quot              public static String getIPFromRequest HttpServletRequest request            String ip   null          if  request    null                if  RequestContextHolder getRequestAttributes      null                    return null                            request     ServletRequestAttributes  RequestContextHolder getRequestAttributes    getRequest                       try               ip   InetAddress getLocalHost   getHostAddress              catch  Exception e                e printStackTrace                      if   StringUtils isEmpty ip               return ip           for  String header   IP HEADER CANDIDATES                String ipList   request getHeader header               if  ipList    null  amp  amp  ipList length      0  amp  amp    quot unknown quot  equalsIgnoreCase ipList                     return ipList split  quot   quot   0                                    return request getRemoteAddr           I combie the code above to this code work for most case  Pass the HttpServletRequest request you get from the api to the method

User · Answer

I use such method to do this  public class HttpReqRespUtils        private static final String   IP HEADER CANDIDATES              X-Forwarded-For            Proxy-Client-IP            WL-Proxy-Client-IP            HTTP X FORWARDED FOR            HTTP X FORWARDED            HTTP X CLUSTER CLIENT IP            HTTP CLIENT IP            HTTP FORWARDED FOR            HTTP FORWARDED            HTTP VIA            REMOTE ADDR              public static String getClientIpAddressIfServletRequestExist              if  RequestContextHolder getRequestAttributes      null                return  0 0 0 0                      HttpServletRequest request     ServletRequestAttributes  RequestContextHolder getRequestAttributes    getRequest            for  String header  IP HEADER CANDIDATES                String ipList   request getHeader header               if  ipList    null  amp  amp  ipList length      0  amp  amp    unknown  equalsIgnoreCase ipList                     String ip   ipList split      0                   return ip                                   return request getRemoteAddr

User · Answer

See below  This code works with spring-boot and spring-boot   apache CXF SOAP          in your class RequestUtil     private static final String   IP HEADER NAMES                                                               X-Forwarded-For                                                            Proxy-Client-IP                                                            WL-Proxy-Client-IP                                                            HTTP X FORWARDED FOR                                                            HTTP X FORWARDED                                                            HTTP X CLUSTER CLIENT IP                                                            HTTP CLIENT IP                                                            HTTP FORWARDED FOR                                                            HTTP FORWARDED                                                            HTTP VIA                                                            REMOTE ADDR                                                              public static String getRemoteIP RequestAttributes requestAttributes                if  requestAttributes    null                        return  0 0 0 0                     HttpServletRequest request     ServletRequestAttributes  requestAttributes  getRequest            String ip   Arrays asList IP HEADER NAMES               stream                map request  getHeader               filter h - gt  h    null  amp  amp  h length      0  amp  amp    unknown  equalsIgnoreCase h                map h - gt  h split      0                reduce      h1  h2  - gt  h1         h2           return ip   request getRemoteAddr                     in service class      String remoteAddress   RequestUtil getRemoteIP RequestContextHolder currentRequestAttributes

User · Answer

Put this method in your BaseController    SuppressWarnings  ConstantConditions   protected String fetchClientIpAddr         HttpServletRequest request     ServletRequestAttributes   RequestContextHolder getRequestAttributes     getRequest        String ip   Optional ofNullable request getHeader  X-FORWARDED-FOR    orElse request getRemoteAddr         if  ip equals  0 0 0 0 0 0 0 1    ip    127 0 0 1       Assert isTrue ip chars   filter   - gt            count      3   Illegal IP      ip       return ip

User · Answer

The solution is    RequestMapping value    processing   method   RequestMethod GET  public  ResponseBody ProcessResponse processData  RequestParam  workflow   final String workflow       RequestParam  conf   final String value   RequestParam  dc   final String dc  HttpServletRequest request             System out println workflow           System out println value           System out println dc           System out println request getRemoteAddr                some other code         Add HttpServletRequest request to your method definition and then use the Servlet API  Spring Documentation here said in      15 3 2 3 Supported handler method arguments and return types   Handler methods that are annotated with  RequestMapping can have very flexible signatures  Most of them can be used in arbitrary order  see below for more details    Request or response objects  Servlet API   Choose any specific request or response type  for example ServletRequest or HttpServletRequest

User · Answer

I am late here  but this might help someone looking for the answer  Typically servletRequest getRemoteAddr   works    In many cases your application users might be accessing your web server via a proxy server or maybe your application is behind a load balancer   So you should access the X-Forwarded-For http header in such a case to get the user s IP address   e g  String ipAddress   request getHeader  X-FORWARDED-FOR     Hope this helps

User · Answer

In my case  I was using Nginx in front of my application with the following configuration   location          proxy pass        http   localhost 8080        proxy set header  X-Real-IP  remote addr       proxy set header  X-Forwarded-For  proxy add x forwarded for       proxy set header  Host  http host       add header Content-Security-Policy  upgrade-insecure-requests       so in my application I get the real user ip like so   String clientIP   request getHeader  X-Real-IP

User · Answer

You can get the IP address statically from the RequestContextHolder as below     HttpServletRequest request     ServletRequestAttributes  RequestContextHolder currentRequestAttributes             getRequest     String ip   request getRemoteAddr

User · Answer

Below is the Spring way  with autowired request bean in  Controller class    Autowired  private HttpServletRequest request   System out println request getRemoteHost

[java] How to extract IP Address in Spring MVC Controller get call?

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