feat: 切换数据库从H2到MySQL

- 安装MySQL数据库
- 创建xuan_deduct数据库和xuan_user用户
- 创建deduct_record表
- 修改application.properties配置MySQL连接
- 测试验证数据库连接和数据保存功能

pom.xml

@@ -117,6 +117,13 @@
             <artifactId>mysql-connector-java</artifactId>
             <version>8.0.33</version>
         </dependency>
+        <!-- MySQL Connector -->
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+            <version>8.0.33</version>
+        </dependency>
+        
         <!-- H2 Database (for development) -->
         <dependency>
             <groupId>com.h2database</groupId>

src/main/resources/application.properties

@@ -1,30 +1,17 @@
 server.port=8080
 spring.application.name=xuan-utils-pro
 
-# H2 Database Configuration (Development)
-spring.datasource.url=jdbc:h2:file:./data/xuan;DB_CLOSE_ON_EXIT=FALSE;AUTO_RECONNECT=TRUE
-spring.datasource.driverClassName=org.h2.Driver
-spring.datasource.username=sa
-spring.datasource.password=
+# MySQL Database Configuration
+spring.datasource.url=jdbc:mysql://localhost:3306/xuan_deduct?useSSL=false&serverTimezone=Asia/Shanghai&characterEncoding=utf8&allowPublicKeyRetrieval=true
+spring.datasource.driverClassName=com.mysql.cj.jdbc.Driver
+spring.datasource.username=xuan_user
+spring.datasource.password=xuan_password
 
 # JPA Configuration
-spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
+spring.jpa.database-platform=org.hibernate.dialect.MySQL8Dialect
 spring.jpa.hibernate.ddl-auto=update
 spring.jpa.show-sql=true
 spring.jpa.properties.hibernate.format_sql=true
 
-# H2 Console (Development only)
-spring.h2.console.enabled=true
-spring.h2.console.path=/h2-console
-
-# MySQL Configuration (Production - uncomment when needed)
-#spring.datasource.url=jdbc:mysql://localhost:3306/xuan_deduct?useSSL=false&serverTimezone=Asia/Shanghai&characterEncoding=utf8
-#spring.datasource.driverClassName=com.mysql.cj.jdbc.Driver
-#spring.datasource.username=root
-#spring.datasource.password=your_password
-#spring.jpa.database-platform=org.hibernate.dialect.MySQL8Dialect
-#spring.jpa.hibernate.ddl-auto=update
-
 # Logging
 logging.level.xuan=DEBUG
-logging.level.org.hibernate.SQL=DEBUG