diff --git a/接龙/demo/src/main/java/com/example/demo/controller/DragonController.java b/接龙/demo/src/main/java/com/example/demo/controller/DragonController.java
new file mode 100644
index 0000000..d154169
--- /dev/null
+++ b/接龙/demo/src/main/java/com/example/demo/controller/DragonController.java
@@ -0,0 +1,2 @@
+package com.example.demo.controller;public class DragonController {
+}
diff --git a/接龙/demo/src/main/java/com/example/demo/domain/Dragon.java b/接龙/demo/src/main/java/com/example/demo/domain/Dragon.java
new file mode 100644
index 0000000..55132e3
--- /dev/null
+++ b/接龙/demo/src/main/java/com/example/demo/domain/Dragon.java
@@ -0,0 +1,2 @@
+package com.example.demo.domain;public class Dragon {
+}
diff --git a/接龙/demo/src/main/java/com/example/demo/mapper/DragonMapper.java b/接龙/demo/src/main/java/com/example/demo/mapper/DragonMapper.java
new file mode 100644
index 0000000..f3df55e
--- /dev/null
+++ b/接龙/demo/src/main/java/com/example/demo/mapper/DragonMapper.java
@@ -0,0 +1,4 @@
+package com.example.demo.mapper;
+
+public interface DragonInterface {
+}
diff --git a/接龙/demo/src/main/java/com/example/demo/mapper/xml/DragonMapper.xml b/接龙/demo/src/main/java/com/example/demo/mapper/xml/DragonMapper.xml
new file mode 100644
index 0000000..e69de29
diff --git a/接龙/demo/src/main/java/com/example/demo/service/IDragonService.java b/接龙/demo/src/main/java/com/example/demo/service/IDragonService.java
new file mode 100644
index 0000000..65ad3a5
--- /dev/null
+++ b/接龙/demo/src/main/java/com/example/demo/service/IDragonService.java
@@ -0,0 +1,22 @@
+package com.example.demo.service;
+
+import com.example.demo.domain.Dragon;
+
+import java.util.List;
+
+public interface DragonService {
+    /**
+     * 查询所有Area
+     */
+    List<Dragon> queryAll();
+
+    /**
+     * 通过Id查询Dragon
+     */
+    Dragon queryDragonById(int id);
+
+    /**
+     * 通过Id删除Dragon
+     */
+    boolean delDragonById(int id);
+}
diff --git a/接龙/demo/src/main/java/com/example/demo/service/impl/DragonServiceImpl.java b/接龙/demo/src/main/java/com/example/demo/service/impl/DragonServiceImpl.java
new file mode 100644
index 0000000..f5366a8
--- /dev/null
+++ b/接龙/demo/src/main/java/com/example/demo/service/impl/DragonServiceImpl.java
@@ -0,0 +1,2 @@
+package com.example.demo.service.impl;public class DragonServiceImpl {
+}