JDBC--批量处理

public void testBatch(){
    Connection conn = null;
    PreparedStatement ps = null;
    String sql = "INSERT INTO customers values(?, ?, ?)";
    try{
        conn = JDBCUtils.getConnection();
        JDBCUtils.startTransaction(conn);
        
        ps = conn.prepareStatement(sql);
        Date date = new Date(new java.util.Date().getTime());
        long start = System.currentTimeMillis();
        for(int i = 0; i < 100000; i++){
            ps.setInt(1, i + 1);
            ps.setString(2, "name_" + i);
            ps.setDate(3, date);
            
            ps.addBatch();
            
            if((i + 1) % 300 == 0){
                ps.executeBatch();
                ps.clearBatch();
            }
        }
        ps.executeBatch();
        ps.clearBatch();
        long end = System.currentTimeMillis();
        System.out.println("Time: " + (end - start));
        
        JDBCUtils.commit(conn);
        
    }catch(Exception e){
        e.printStackTrace();
        JDBCUtils.rollback(conn);
    }finally{
        JDBCUtils.release(conn, ps, null);
    }
}