init

ruoyi-cai/src/main/java/com/ruoyi/cai/service/CitysService.java

@@ -0,0 +1,18 @@
+package com.ruoyi.cai.service;
+
+import com.baomidou.mybatisplus.extension.service.IService;
+import com.ruoyi.cai.domain.Citys;
+
+import java.util.Map;
+
+/**
+ * 城市Service接口
+ *
+ * @author 77
+ * @date 2023-12-30
+ */
+public interface CitysService extends IService<Citys> {
+
+    Map<Long,String> all();
+
+}