PreparedStatement: setClob(int parameterIndex, Clob x) : PreparedStatement « java.sql « Java by API

1. Java by API
2. java.sql
3. PreparedStatement

PreparedStatement: setClob(int parameterIndex, Clob x)

 

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

public class DemoPreparedStatementSetClob {
  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 main(String[] args)throws Exception {
    String id = "0001";
    String newID = "0002";

    ResultSet rs = null;
    Connection conn = null;
    PreparedStatement pstmt = null;
    try {
      conn = getConnection();
      // begin transaction
      conn.setAutoCommit(false);
      String query1 = "select clob_column from clob_table where id = ?";
      pstmt = conn.prepareStatement(query1);
      pstmt.setString(1, id);
      rs = pstmt.executeQuery();
      rs.next();
      java.sql.Clob clob = (java.sql.Clob) rs.getObject(1);
      String query = "insert into clob_table(id, clob_column) values(?, ?)";
      pstmt = conn.prepareStatement(query);
      pstmt.setString(1, newID);
      pstmt.setClob(2, clob);

      int rowCount = pstmt.executeUpdate();
      System.out.println("rowCount=" + rowCount);
      conn.commit();
    } finally {
      rs.close();
      pstmt.close();
      conn.close();
    }
  }
}

   
  

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