java之jdbc_採用Statement添加數據

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import java.sql.*;
//採用Statement添加數據
public class InsertTest01 {
    public static void main(String[] args) {
        if (args.length != 8) {
            throw new IllegalArgumentException("參數非法，正確使用爲InsertTest01 ...");
        }

        Connection conn = null;
        Statement stmt = null;
        try {
            //第一步，加載數據庫驅動，不一樣的數據庫驅動程序不同
            Class.forName("oracle.jdbc.driver.OracleDriver");
            //第二部，獲得數據庫鏈接
            String dburl = "jdbc:oracle:thin:@localhost:1521:orcl";
            //String dburl = "jdbc:oracle:thin:@192.168.21.1:1521:orcl";
            //String dburl = "jdbc:oracle:thin:@127.0.0.1:1521:orcl";
            String userName = "system";
            String password = "wanwan";
            conn = DriverManager.getConnection(dburl, userName, password);
            //System.out.println(conn);


            int empno = Integer.parseInt(args[0]);
            String ename = args[1];
            String job = args[2];
            int mgr = Integer.parseInt(args[3]);
            //格式：yyyy-mm-dd
            String hiredate = args[4];
            float sal = Float.parseFloat(args[5]);
            float comm = Float.parseFloat(args[6]);
            int deptno = Integer.parseInt(args[7]);

            //第三步，建立Statement，執行SQL語句
            //拼串
            //最好將比較複雜的sql調通，再將sql語句和程序相結合，進行連調
            String sql = "insert into enp(empno, ename, job, mgr, hiredate, sal, comm, deptno) ";

            sql += "values("+ empno +", '"+ ename +"', '"+ job +"', "+ mgr +", ";
            sql += "to_date('"+ hiredate +"', 'yyyy-mm-dd'), "+ sal + ", "+ comm +", "+ deptno +")";

            System.out.println("sql = " + sql);
            stmt = conn.createStatement();
            stmt.executeUpdate(sql);
            System.out.println("添加員工成功");



        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            //注意關閉原則：從裏到外
            try {
                if (stmt != null) {
                    stmt.close();
                }
                if (conn != null) {
                    conn.close();
                }
            } catch(SQLException e) {

            }

        }
    }
}