java 获取客户端ip
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摘自 :http://newleague.iteye.com/blog/858741
像移动网关一样,iisforward这个ISAPI过滤器也会对request对象进行再包装,附加一些WLS要用的头信息。这种情况下,直接用request.getRemoteAddr()是无法取到真正的客户IP的。
实际的iisforward附加头如下:
- WL-Proxy-Client-IP=211.161.1.239
- Proxy-Client-IP=211.161.1.239
- X-Forwarded-For=211.161.1.239
- WL-Proxy-Client-Keysize=
- WL-Proxy-Client-Secretkeysize=
- X-WebLogic-Request-ClusterInfo=true
- X-WebLogic-KeepAliveSecs=30
- X-WebLogic-Force-JVMID=-327089098
- WL-Proxy-SSL=false
综上,正确作法如下:
- private String getIpAddr() {
- String ipAddress = null;
- //ipAddress = this.getRequest().getRemoteAddr();
- ipAddress = this.getRequest().getHeader("x-forwarded-for");
- if(ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
- ipAddress = this.getRequest().getHeader("Proxy-Client-IP");
- }
- if(ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
- ipAddress = this.getRequest().getHeader("WL-Proxy-Client-IP");
- }
- if(ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
- ipAddress = this.getRequest().getRemoteAddr();
- if(ipAddress.equals("127.0.0.1")){
- //根据网卡取本机配置的IP
- InetAddress inet=null;
- try {
- inet = InetAddress.getLocalHost();
- } catch (UnknownHostException e) {
- e.printStackTrace();
- }
- ipAddress= inet.getHostAddress();
- }
- }
- //对于通过多个代理的情况,第一个IP为客户端真实IP,多个IP按照','分割
- if(ipAddress!=null && ipAddress.length()>15){ //"***.***.***.***".length() = 15
- if(ipAddress.indexOf(",")>0){
- ipAddress = ipAddress.substring(0,ipAddress.indexOf(","));
- }
- }
- return ipAddress;
- }
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