feat(klp-admin): 集成 Flyway 数据库迁移工具- 在 application.yml 中添加 Flyway 配置

- 新增 FlywayConfig 类进行配置和初始化- 在 KLPApplication 中排除 FlywayAutoConfiguration
- 更新 pom.xml 文件，添加 Flyway 相关依赖
- 创建第一个数据库迁移脚本 V2__create_test_table.sql

klp-common/src/main/java/com/klp/common/config/FlywayConfig.java

@@ -0,0 +1,68 @@
+package com.klp.common.config;
+
+import javax.annotation.Resource;
+import javax.sql.DataSource;
+
+import com.baomidou.dynamic.datasource.DynamicRoutingDataSource;
+import org.flywaydb.core.Flyway;
+import org.flywaydb.core.api.output.MigrateResult;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class FlywayConfig {
+
+    @Value("${spring.profiles.active}")
+    private String activeProfile;
+
+    @Value("${spring.flyway.baseline-on-migrate}")
+    private boolean baselineOnMigrate;
+
+    @Value("${spring.flyway.locations}")
+    private String locations;
+
+    @Value("${spring.flyway.table}")
+    private String table;
+
+    @Resource
+    private DataSource dataSource;
+
+    @Bean
+    public Flyway flyway() {
+        DataSource masterDataSource = ((DynamicRoutingDataSource) dataSource).getDataSource("master");
+        System.out.println("masterDataSource class: " + masterDataSource.getClass().getName());
+
+//        // 如果想显式拿底层 HikariDataSource
+//        if (masterDataSource instanceof ItemDataSource) {
+//            masterDataSource = ((ItemDataSource) masterDataSource).getRealDataSource();
+//        }
+
+        System.out.println("masterDataSource class: " + masterDataSource.getClass().getName());
+        return Flyway.configure()
+            .dataSource(masterDataSource)  // 注意这里是真实主库 DataSource
+            .baselineOnMigrate(baselineOnMigrate)
+            .locations(locations)
+            .table(table)
+            .load();
+    }
+
+    @Bean
+    public CommandLineRunner flywayRunner(Flyway flyway) {
+        return args -> {
+            System.out.println("========== 当前环境: " + activeProfile + " ==========");
+            System.out.println("========== 开始执行 Flyway 数据库迁移 ==========");
+
+            MigrateResult result = flyway.migrate();
+            System.out.println("迁移成功版本数: " + result.migrationsExecuted);
+
+            result.migrations.forEach(m -> {
+                System.out.println("执行版本: " + m.version + "，描述: " + m.description);
+            });
+
+            System.out.println("========== Flyway 数据库迁移完成 ==========");
+        };
+    }
+}
+