♻️Refactor: SpringBoot 2.x 迁移至 SpringBoot 3.x

Backend/pom.xml

@@ -6,7 +6,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.7.2</version>
+        <version>3.2.2</version>
         <relativePath/> <!-- lookup parent from repository -->
     </parent>
     <groupId>com.wonder</groupId>
@@ -14,14 +14,13 @@
     <version>0.0.1-SNAPSHOT</version>
     <name>bi-backend</name>
     <properties>
-        <java.version>1.8</java.version>
+        <java.version>21</java.version>
     </properties>
     <dependencies>
         <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-amqp -->
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-amqp</artifactId>
-            <version>2.7.2</version>
         </dependency>
         <!-- https://mvnrepository.com/artifact/com.rabbitmq/amqp-client -->
         <dependency>
@@ -55,7 +54,7 @@
         <dependency>
             <groupId>org.mybatis.spring.boot</groupId>
             <artifactId>mybatis-spring-boot-starter</artifactId>
-            <version>2.2.2</version>
+            <version>3.0.3</version>
         </dependency>
         <!-- https://mvnrepository.com/artifact/com.baomidou/mybatis-plus-boot-starter -->
         <dependency>
@@ -111,6 +110,7 @@
         <dependency>
             <groupId>mysql</groupId>
             <artifactId>mysql-connector-java</artifactId>
+            <version>8.0.33</version>
             <scope>runtime</scope>
         </dependency>
         <dependency>