refactor(login): 重构登录相关代码

- 新增 setLoginUser 方法用于设置登录用户
- 修改 getLoginUser 方法，使用新的 loginUser 属性
- 更新 PermissionInterceptor 中的代码，使用新的登录用户设置方式
- 修改前端模板，使用新的 loginUser 对象

Author: xuxueli

xxl-mq-admin2/src/main/java/com/xxl/mq/admin/service/impl/LoginService.java

@@ -134,14 +134,25 @@ public LoginUserDTO checkLogin(HttpServletRequest request, HttpServletResponse r
         return null;
     }
 
+    // ********************** for loginUser with request **********************
     /**
-     * get login user (from request, copy from cookie)
+     * set loginUser
+     *
+     * @param request
+     * @param loginUser
+     */
+    public static void setLoginUser(HttpServletRequest request, LoginUserDTO loginUser){
+        request.setAttribute("loginUser", loginUser);
+    }
+
+    /**
+     * get loginUser
      *
      * @param request
      * @return
      */
-    public LoginUserDTO getLoginUser(HttpServletRequest request){
-        LoginUserDTO loginUser = (LoginUserDTO) request.getAttribute(LoginService.LOGIN_IDENTITY_KEY);
+    public static LoginUserDTO getLoginUser(HttpServletRequest request){
+        LoginUserDTO loginUser = (LoginUserDTO) request.getAttribute("loginUser");	// get loginUser, with request
         return loginUser;
     }
 

xxl-mq-admin2/src/main/java/com/xxl/mq/admin/web/interceptor/PermissionInterceptor.java

@@ -58,7 +58,7 @@ public boolean preHandle(HttpServletRequest request, HttpServletResponse respons
 			response.setHeader("location", request.getContextPath() + "/toLogin");
 			return false;
 		}
-		request.setAttribute(LoginService.LOGIN_IDENTITY_KEY, loginUser);
+		LoginService.setLoginUser(request, loginUser);
 
 		// valid permission
 		if (StringTool.isNotBlank(permission.value())) {

xxl-mq-admin2/src/main/resources/templates/common/common.macro.ftl

@@ -107,8 +107,7 @@
 					<#-- login user -->
                     <li class="dropdown">
                         <a href="javascript:" class="dropdown-toggle" data-toggle="dropdown" aria-expanded="false">
-                            ${I18n.system_welcome}：${Request["XXL_MQ_LOGIN_IDENTITY"].username}
-							<#-- todo，改为 loginuser  -->
+                            ${I18n.system_welcome}：${loginUser.username}
                             <span class="caret"></span>
                         </a>
                         <ul class="dropdown-menu" role="menu">