Ref: 데이터 중복 삽입 방지

Author: joyewon0705

src/main/java/com/back/global/initData/DevInitData.java

@@ -15,16 +15,22 @@
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Profile;
-import org.springframework.core.env.Environment;
+import org.springframework.core.io.ClassPathResource;
+import org.springframework.jdbc.datasource.init.ResourceDatabasePopulator;
 import org.springframework.security.crypto.password.PasswordEncoder;
 import org.springframework.transaction.annotation.Transactional;
 
+import javax.sql.DataSource;
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.Statement;
 import java.util.List;
 
 @Configuration
 @Profile("default")
 @RequiredArgsConstructor
 public class DevInitData {
+    private final DataSource dataSource;
     private final UserRepository userRepository;
     private final PostRepository postRepository;
     private final CommentRepository commentRepository;
@@ -33,11 +39,44 @@ public class DevInitData {
 
     @Bean
     ApplicationRunner DevInitDataApplicationRunner() {
-        return args -> {
-            initUsersAndPostsAndComments();
-        };
+        return args -> initialize();
     }
 
+    @Transactional
+    public void initialize() {
+        runDataSql();
+        initUsersAndPostsAndComments();
+    }
+
+    private void runDataSql() {
+        try (Connection connection = dataSource.getConnection()) {
+            connection.setAutoCommit(true);
+            Statement stmt = connection.createStatement();
+
+            // post_category 테이블에 데이터 있는지 확인
+            ResultSet rs = stmt.executeQuery("SELECT COUNT(*) FROM post_category");
+            rs.next();
+            long count = rs.getLong(1);
+
+            if (count == 0) {
+                // 데이터가 없으면 data.sql 실행
+                ResourceDatabasePopulator populator = new ResourceDatabasePopulator();
+                populator.addScript(new ClassPathResource("data.sql"));
+                populator.setContinueOnError(true);
+                populator.setIgnoreFailedDrops(true);
+                populator.execute(dataSource);
+
+                System.out.println("✅ data.sql executed because table was empty!");
+            } else {
+                System.out.println("ℹ️ Skipped data.sql (already has data: " + count + ")");
+            }
+
+        } catch (Exception e) {
+            System.err.println("⚠️ data.sql execution failed: " + e.getMessage());
+        }
+    }
+
+
     @Transactional
     public void initUsersAndPostsAndComments() {
         if (userRepository.count() == 0) {

src/main/resources/application.yml

@@ -30,7 +30,7 @@ spring:
 
   sql:
     init:
-      mode: always
+      mode: never
 
   security:
     oauth2: