+import java.sql.Connection;

+import java.sql.PreparedStatement;

+import java.sql.SQLException;

+import java.sql.Timestamp;

+import java.time.LocalDateTime;

+import java.time.format.DateTimeFormatter;

+import javax.sql.DataSource;

+

+import org.springframework.beans.factory.annotation.Autowired;

+

+	@Autowired

+	private DataSource dataSource;

+	

+

+	/**

+	 * 다량 데이터를 Batch 처리로 MJ_MSG_DATA 테이블에 INSERT

+	 *

+	 * @param mjonMsgSendVOList - 삽입할 데이터 리스트

+	 * @return 성공적으로 삽입된 데이터 건수

+	 */

+	public int insertMsgDataInfo_jdbc_advc(List<MjonMsgSendVO> mjonMsgSendVOList) {

+		String sql = "INSERT INTO MJ_MSG_DATA "

+				+ "(MSG_ID, MSG_GROUP_ID, USER_ID, AGENT_CODE, CUR_STATE, REQ_DATE, CALL_TO, CALL_FROM, SUBJECT, SMS_TXT, MSG_TYPE) "

+				+ "VALUES (?, ?, ?, ?, 0, ?, ?, ?, ?, ?, ?)";

+		int totalInsertedCount = 0;

+

+		try (Connection connection = dataSource.getConnection();

+		     PreparedStatement pstmt = connection.prepareStatement(sql)) {

+

+			connection.setAutoCommit(false); // Auto-commit 비활성화

+

+			int batchSize = 5000; // Batch 크기 설정

+			int count = 0;

+

+			// 데이터 리스트 순회하며 PreparedStatement에 추가

+			for (MjonMsgSendVO vo : mjonMsgSendVOList) {

+				pstmt.setString(1, vo.getMsgId());

+				pstmt.setString(2, vo.getMsgGroupId());

+				pstmt.setString(3, vo.getUserId());

+				pstmt.setString(4, vo.getAgentCode());

+			    // reqDate 변환 후 설정

+			    Timestamp timestamp = convertToTimestamp(vo.getReqDate());

+			    pstmt.setTimestamp(5, timestamp);

+			    

+				pstmt.setString(6, vo.getCallTo());

+				pstmt.setString(7, vo.getCallFrom());

+				pstmt.setString(8, vo.getSubject());

+				pstmt.setString(9, vo.getSmsTxt());

+				pstmt.setString(10, vo.getMsgType());

+

+				pstmt.addBatch(); // Batch에 추가

+				count++;

+

+				// Batch 크기마다 실행

+				if (count % batchSize == 0) {

+					int[] batchResults = pstmt.executeBatch();

+					totalInsertedCount += getSuccessCount(batchResults);

+				}

+			}

+

+			// 남은 데이터 실행

+			int[] batchResults = pstmt.executeBatch();

+			totalInsertedCount += getSuccessCount(batchResults);

+

+			connection.commit(); // 트랜잭션 커밋

+

+		} catch (SQLException e) {

+			throw new RuntimeException("JDBC Batch insert failed", e);

+		}

+		return totalInsertedCount; // 처리된 전체 데이터 수 반환

+	}

+	

+	

+	

+	public Timestamp convertToTimestamp(String reqDate) {

+	    try {

+	        // 입력 형식이 yyyy/MM/dd HH:mm:ss인 경우 변환

+	        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy/MM/dd HH:mm:ss");

+	        LocalDateTime localDateTime = LocalDateTime.parse(reqDate.trim(), formatter);

+

+	        // LocalDateTime -> Timestamp로 변환

+	        return Timestamp.valueOf(localDateTime);

+	    } catch (Exception e) {

+	        throw new IllegalArgumentException("날짜 형식이 올바르지 않습니다: " + reqDate, e);

+	    }

+	}

+	

+	/**

+	 * Batch 실행 결과에서 성공한 건수 계산

+	 *

+	 * @param batchResults - Batch 실행 결과 배열

+	 * @return 성공적으로 실행된 건수

+	 */

+	private int getSuccessCount(int[] batchResults) {

+		int successCount = 0;

+		for (int result : batchResults) {

+			// 성공적인 실행일 경우 값이 1 또는 Statement.SUCCESS_NO_INFO

+			if (result >= 0 || result == java.sql.Statement.SUCCESS_NO_INFO) {

+				successCount++;

+			}

+		}

+		return successCount;

+	}

+	

+		System.out.println("==================== insert 시작 ====================");

+//		int instCnt = mjonMsgDataDAO.insertMsgDataInfo_advc(mjonMsgSendVOList);

+//		int instCnt = mjonMsgDataDAO.insertMsgDataInfo_jdbc_advc(mjonMsgSendVOList);

+		//

+		int instCnt = 0;

+		int batchSize = 5000;

+		// Batch 처리

+		for (int i = 0; i < mjonMsgSendVOList.size(); i += batchSize) {

+			System.out.println(" i :: "+ i);

+			// Batch 크기만큼 리스트를 잘라냄

+			List<MjonMsgSendVO> batchList = mjonMsgSendVOList.subList(

+				i, Math.min(i + batchSize, mjonMsgSendVOList.size())

+			);

+		

+			// DAO 메서드 호출

+			int insertedCount = mjonMsgDataDAO.insertMsgDataInfo_advc(batchList);

+			instCnt += insertedCount; // 총 삽입된 건수 누적

+		}

+		

+		System.out.println("Execution time :: " + executionTimeInSeconds + "초 " + "// insert Cnt :: "+instCnt);