修改 get-routers 接口的相关方法，简单完成

src/main/java/cn/iocoder/dashboard/modules/system/service/permission/SysMenuService.java

@@ -11,7 +11,7 @@ import java.util.List;
 public interface SysMenuService {
 
     /**
-     *
+     * 初始化菜单
      */
     void init();
 
@@ -39,4 +39,6 @@ public interface SysMenuService {
     List<SysMenuDO> listMenusFromCache(Collection<Long> menuIds, Collection<String> menuTypes,
                                        Collection<String> menusStatuses);
 
+
+
 }

src/main/java/cn/iocoder/dashboard/modules/system/service/permission/impl/SysMenuServiceImpl.java

@@ -12,7 +12,10 @@ import org.springframework.stereotype.Service;
 
 import javax.annotation.PostConstruct;
 import javax.annotation.Resource;
-import java.util.*;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
 import java.util.stream.Collectors;
 
 /**
@@ -83,4 +86,5 @@ public class SysMenuServiceImpl implements SysMenuService {
                 && menusStatuses.contains(menu.getStatus()))
                 .collect(Collectors.toList());
     }
+
 }