基础版本完成

commons/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>com.example</groupId>
+        <artifactId>SpringCloudStudy</artifactId>
+        <version>0.0.1-SNAPSHOT</version>
+    </parent>
+
+    <groupId>org.example</groupId>
+    <artifactId>commons</artifactId>
+
+    <properties>
+        <maven.compiler.source>8</maven.compiler.source>
+        <maven.compiler.target>8</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+</project>

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

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+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

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+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

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+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;
+    }
+}