添加RequestUtil工具类，用于获取当前登录用户的信息

njcn-springboot/spingboot2.3.12/src/main/java/com/njcn/web/utils/RequestUtil.java

@@ -0,0 +1,61 @@
+package com.njcn.web.utils;
+
+import cn.hutool.core.util.StrUtil;
+import cn.hutool.extra.spring.SpringUtil;
+import com.njcn.common.bean.CustomCacheUtil;
+import com.njcn.common.pojo.constant.SecurityConstants;
+import com.njcn.common.utils.JwtUtil;
+import org.apache.logging.log4j.util.Strings;
+
+import javax.servlet.http.HttpServletRequest;
+import java.util.Map;
+
+/**
+ * @author caozehui
+ * @data 2025-02-24
+ */
+public class RequestUtil {
+    /**
+     * 获取当前请求的AccessToken
+     *
+     * @return 若成功，返回当前请求的AccessToken；若失败，返回null
+     */
+    public static String getAccessToken() {
+        HttpServletRequest request = HttpServletUtil.getRequest();
+        String accessTokenStr = request.getHeader(SecurityConstants.AUTHORIZATION_KEY);
+        String accessToken = null;
+        if (StrUtil.isNotBlank(accessTokenStr)) {
+            accessToken = accessTokenStr.replace(SecurityConstants.AUTHORIZATION_PREFIX, Strings.EMPTY);
+        }
+        return accessToken;
+    }
+
+    /**
+     * 获取当前登录用户的ID
+     *
+     * @return 若成功，返回当前登录用户的ID；若失败，返回null
+     */
+    public static String getUserId() {
+        String accessToken = getAccessToken();
+        String userId = null;
+        if (StrUtil.isNotBlank(accessToken)) {
+            Map<String, Object> map = JwtUtil.parseToken(accessToken);
+            userId = (String) map.get(SecurityConstants.USER_ID);
+        }
+        return userId;
+    }
+
+    /**
+     * 从缓冲中获取当前登录用户的JSON格式的用户信息
+     * @return 若成功，返回当前登录用户的JSON格式的用户信息；若失败，返回null
+     */
+    public static String getUserJson(){
+        String accessToken = getAccessToken();
+        String userJson = null;
+        if (StrUtil.isNotBlank(accessToken)) {
+            CustomCacheUtil customCacheUtil = SpringUtil.getBean(CustomCacheUtil.CACHE_NAME);
+            userJson = customCacheUtil.get(accessToken,false);
+        }
+       return userJson;
+    }
+}