【java】mysql的簡單查詢

/**
 * 使用idea連接數據庫，簡單實現查詢數據庫的數據
 * 
 * 依賴org.wisdom-framework:mysql-connector-java:5.1.34_1
 * 
 * */
public class MySqlTest {

    private static String url="jdbc:mysql://localhost:3306/MySqlTest";

    private static String username="root";

    private static String password="123456";

    private static String driver="com.mysql.jdbc.Driver";


    public static void main(String[] args) {
        init();
    }

    public static void init(){

        try{
            //加載驅動
            Class.forName(driver);

            Connection conn= DriverManager.getConnection(url,username,password);
            Statement sql_statement=conn.createStatement();

            if(!conn.isClosed()){

                System.out.println("連接數據庫成功");

                //查詢語句
                String query="select * from table_name";
                ResultSet result=sql_statement.executeQuery(query);

                while (result.next()){
                    String name=result.getString("name");
                    System.out.println("獲得結果"+name);
                }



            }else {
                System.out.println("連接數據庫失敗");
            }

            sql_statement.close();
            conn.close();


        }catch (SQLException e){
            e.printStackTrace();
        }catch (ClassNotFoundException e){
            e.printStackTrace();
        }

    }

}