JDBC批理更新示例

ConnectionObject.java

public class ConnectionObject {
	static String DB_DRIVER = "com.mysql.jdbc.Driver";
	static String DB_CONNECTION = "jdbc:mysql://localhost:3306/test";
	static String DB_USER = "userName";
	static String DB_PASSWORD = "password";

	public static Connection getConnection() {
		Connection connection = null;
		Class.forName(DB_DRIVER);
		connection = DriverManager.getConnection(DB_CONNECTION, DB_USER,
				DB_PASSWORD);
		return connection;
	}
}

public void batchUpdateUsingPreparedStatement() throws SQLException {

	int[] result = null;
	String SQL = "update person set firstName=?,lastName=? where id=?"; 
	// '?' is the placeholder for the parameter
	try {
		PreparedStatement stmt = connection.prepareStatement(SQL);
		connection.setAutoCommit(false);
		stmt.setString(1, "Abc"); // Value for the first parameter, namely 'firstName'
		stmt.setString(2, "Def"); // Value for the second parameter, namely 'lastName'
		stmt.setInt(3, 1); // Value for the third parameter, namely 'id'
		stmt.addBatch(); // Add to Batch

		stmt.setString(1, "Xyz");
		stmt.setString(2, "Uvw");
		stmt.setInt(3, 2);
		stmt.addBatch(); // Add second query to the Batch
		result = stmt.executeBatch(); // execute the Batch and commit
		connection.commit();
	} catch (SQLException e) {
		connection.rollback();
		e.printStackTrace();
	} finally {
		if (connection != null)
			connection.close();
	}
	System.out.println("Number of rows affected: " + result.length);
}

标签： Mysql

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