不多說了直接上程式碼

獲取非域名請求ip：

request.getRemoteAddr()

獲取域名或代理方式請求ip：

public class IpAddrUtil {
   public static String getIPAddress(HttpServletRequest request) {
      String ip = null;

      //X-Forwarded-For：Squid 服務代理
String ipAddresses = request.getHeader("X-Forwarded-For");

      if (ipAddresses == null || ipAddresses.length() == 0 
 
|| "unknown".equalsIgnoreCase(ipAddresses)) {
         //Proxy-Client-IP：apache 服務代理
ipAddresses = request.getHeader("Proxy-Client-IP");
      }

      if (ipAddresses == null || ipAddresses.length() == 0 || "unknown".equalsIgnoreCase(ipAddresses)) {
         //WL-Proxy-Client-IP：weblogic 服務代理
ipAddresses = request.getHeader("WL-Proxy-Client-IP"
 
);
      }

      if (ipAddresses == null || ipAddresses.length() == 0 || "unknown".equalsIgnoreCase(ipAddresses)) {
         //HTTP_CLIENT_IP：有些代理伺服器
ipAddresses = request.getHeader("HTTP_CLIENT_IP");
      }

      if (ipAddresses == null || ipAddresses.length() == 0 || "unknown".equalsIgnoreCase(ipAddresses)) {
         //X-Real-IP：nginx服務代理
 
ipAddresses = request.getHeader("X-Real-IP");
      }

      //有些網路通過多層代理，那麼獲取到的ip就會有多個，一般都是通過逗號（,）分割開來，並且第一個ip為客戶端的真實IP
if (ipAddresses != null && ipAddresses.length() != 0) {
         ip = ipAddresses.split(",")[0];
      }

      //還是不能獲取到，最後再通過request.getRemoteAddr();獲取
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ipAddresses)) {
         ip = request.getRemoteAddr();
      }
      return ip;
   }
}

獲取get方式請求引數：

request.getQueryString()

獲取post方式請求引數：

Enumeration em = request.getParameterNames();
while (em.hasMoreElements()) {
    String name = (String) em.nextElement(); //引數名稱
    String value = request.getParameter(name); //根據引數名稱獲取到引數值
}

獲取請求方式：

request.getMethod()

獲取請求url：

request.getRequestURL().toString()