基础版本完成

commons/src/main/java/com/test/entity/Book.java

@@ -0,0 +1,17 @@
+package com.test.entity;
+
+import lombok.Data;
+
+/**
+ * ClassName: Book
+ * Package: com.test.entity
+ *
+ * @author yovinchen
+ * @Create 2023/8/14 21:17
+ */
+@Data
+public class Book {
+    int bid;
+    String title;
+    String des;
+}

commons/src/main/java/com/test/entity/Borrow.java

@@ -0,0 +1,17 @@
+package com.test.entity;
+
+import lombok.Data;
+
+/**
+ * ClassName: Borrow
+ * Package: com.test.entity
+ *
+ * @author yovinchen
+ * @Create 2023/8/14 17:01
+ */
+@Data
+public class Borrow {
+    int id;
+    int uid;
+    int bid;
+}

commons/src/main/java/com/test/entity/User.java

@@ -0,0 +1,31 @@
+package com.test.entity;
+
+import lombok.Data;
+
+/**
+ * ClassName: User
+ * Package: com.test.entity
+ *
+ * @author yovinchen
+ * @Create 2023/8/14 17:01
+ */
+@Data
+public class User {
+    int uid;
+    String name;
+    String sex;
+
+    /**
+     * ClassName: Book
+     * Package: com.test.entity
+     *
+     * @author yovinchen
+     * @Create 2023/8/14 17:01
+     */
+    @Data
+    public static class Book {
+        int bid;
+        String title;
+        String desc;
+    }
+}