新增 RequestContextHolder 工具类

pcloud-common/src/main/java/com/pcloud/common/utils/RequestContextHolderUtil.java

+package com.pcloud.common.utils;
+
+import org.springframework.web.context.request.RequestContextHolder;
+import org.springframework.web.context.request.ServletRequestAttributes;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+public class RequestContextHolderUtil {
+
+    private RequestContextHolderUtil() {}
+
+    public static HttpServletRequest getRequest() {
+        ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
+        return requestAttributes.getRequest();
+    }
+
+    public static HttpServletResponse getResponse() {
+        ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
+        return requestAttributes.getResponse();
+    }
+}