Demo Prepared Statement Add Batch MySQL : Batch Update « Database SQL JDBC « Java





Demo Prepared Statement Add Batch MySQL

 
import java.sql.BatchUpdateException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.Statement;

public class DemoPreparedStatementAddBatchMySQL {

  public static Connection getConnection() throws Exception {
    String driver = "org.gjt.mm.mysql.Driver";
    String url = "jdbc:mysql://localhost/databaseName";
    String username = "root";
    String password = "root";
    Class.forName(driver);
    Connection conn = DriverManager.getConnection(url, username, password);
    return conn;
  }

  public static void checkUpdateCounts(int[] updateCounts) {
    for (int i = 0; i < updateCounts.length; i++) {
      if (updateCounts[i] >= 0) {
        System.out.println("Successfully executed; updateCount=" + updateCounts[i]);
      } else if (updateCounts[i] == Statement.SUCCESS_NO_INFO) {
        System.out.println("Successfully executed; updateCount=Statement.SUCCESS_NO_INFO");
      } else if (updateCounts[i] == Statement.EXECUTE_FAILED) {
        System.out.println("Failed to execute; updateCount=Statement.EXECUTE_FAILED");
      }
    }
  }

  public static void main(String[] args)throws Exception {
    Connection conn = null;
    PreparedStatement pstmt = null;
    try {
      conn = getConnection();
      conn.setAutoCommit(false);
      String query = "insert into add_batch_table(stringCol, intCol) values(?, ?)";
      pstmt = conn.prepareStatement(query);
      pstmt.setString(1, "1");
      pstmt.setInt(2, 100);
      pstmt.addBatch();

      pstmt.setString(1, "2");
      pstmt.setInt(2, 200);
      pstmt.addBatch();

      pstmt.setString(1, "3");
      pstmt.setInt(2, 300);
      pstmt.addBatch();

      int[] updateCounts = pstmt.executeBatch();
      checkUpdateCounts(updateCounts);
      conn.commit();
    } catch (BatchUpdateException e) {
      int[] updateCounts = e.getUpdateCounts();
      checkUpdateCounts(updateCounts);
      try {
        conn.rollback();
      } catch (Exception e2) {
        e.printStackTrace();
      }
    } catch (Exception e) {
      e.printStackTrace();
    } finally {
      pstmt.close();
      conn.close();
    }
  }
}
           
         
  










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