Api 添加获取ip工具类

ruoyi-common/src/main/java/com/ruoyi/common/core/ip/IPUtils.java

@@ -0,0 +1,56 @@
+package com.ruoyi.common.core.ip;
+
+import com.ruoyi.common.utils.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.servlet.http.HttpServletRequest;
+
+/**
+ * @Description IP地址
+ * @Author Liming
+ * @Time 2023/08/01
+ */
+public class IPUtils {
+	private static Logger logger = LoggerFactory.getLogger(IPUtils.class);
+
+	/**
+	 * 获取IP地址
+	 * 
+	 * 使用Nginx等反向代理软件， 则不能通过request.getRemoteAddr()获取IP地址
+	 * 如果使用了多级反向代理的话，X-Forwarded-For的值并不止一个，而是一串IP地址，X-Forwarded-For中第一个非unknown的有效IP字符串，则为真实IP地址
+	 */
+	public static String getIpAddr(HttpServletRequest request) {
+    	String ip = null;
+        try {
+            ip = request.getHeader("x-forwarded-for");
+            if (StringUtils.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) {
+                ip = request.getHeader("Proxy-Client-IP");
+            }
+            if (StringUtils.isEmpty(ip) || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
+                ip = request.getHeader("WL-Proxy-Client-IP");
+            }
+            if (StringUtils.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) {
+                ip = request.getHeader("HTTP_CLIENT_IP");
+            }
+            if (StringUtils.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) {
+                ip = request.getHeader("HTTP_X_FORWARDED_FOR");
+            }
+            if (StringUtils.isEmpty(ip) || "unknown".equalsIgnoreCase(ip)) {
+                ip = request.getRemoteAddr();
+            }
+        } catch (Exception e) {
+        	logger.error("IPUtils ERROR ", e);
+        }
+        
+//        //使用代理，则获取第一个IP地址
+//        if(StringUtils.isEmpty(ip) && ip.length() > 15) {
+//			if(ip.indexOf(",") > 0) {
+//				ip = ip.substring(0, ip.indexOf(","));
+//			}
+//		}
+        
+        return ip;
+    }
+	
+}