JDBC基础操作DOME

public class DBUtil {

	static {
		try {
			// Class.forName("oracle.jdbc.driver.OracleDriver");
			Class.forName("com.mysql.jdbc.Driver");
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		}
	}
	
	//增加
	public void insert(){
		Connection conn = getConnection();
		PreparedStatement ps = null;
		try {
			
			setAutoCommit(conn, false);
			String sql = " insert into tb_test (name) values (?) ";
			ps = conn.prepareStatement(sql);
			ps.setString(1, "name");
			ps.execute();
			conn.commit();
		} catch (Exception e) {
			e.printStackTrace();
			rollback(conn);
		}finally{
			close(ps);		
			close(conn);
		}
	}
	
	public void findOne(){
		/*ArrayList<Integer> list = new ArrayList<Integer>();
		list.add(1);
		list.add(2);*/
		
		int list[] = {1, 2};
		
		Connection conn = getConnection();
		PreparedStatement ps = null;
		try {

			String sql = " select id, name from tb_test where id in (?)  ";
			ps = conn.prepareStatement(sql);
			ps.setObject(1, list);
			ResultSet rs = ps.executeQuery();
			/*if(rs.next()){
				String result = rs.getString("id") + ":" + rs.getString("name");;
				System.out.println(result);
			}*/
			
			while(rs.next()){
				String result = rs.getString(1) + ":" + rs.getString(2);;
				System.out.println(result);
			}
		
		} catch (Exception e) {
			e.printStackTrace();
		}finally{
			close(ps);		
			close(conn);
		}
	}
	
	public void find(){
		Connection conn = getConnection();
		PreparedStatement ps = null;
		try {
			
			String sql = " select id, name from tb_test  ";
			ps = conn.prepareStatement(sql);
			ResultSet rs = ps.executeQuery();
			while(rs.next()){
				String result = rs.getString(1) + ":" + rs.getString(1);;
				System.out.println(result);
			}
			
		} catch (Exception e) {
			e.printStackTrace();
		}finally{
			close(ps);		
			close(conn);
		}
	}
	

	//获取数据库连接
	public static Connection getConnection() {
		// String url = "jdbc:oracle:thin:@localhost:1521:testdb";
		try {
			String url = "jdbc:mysql://localhost:3306/dome";
			String user = "root";
			String password = "123456";
			return DriverManager.getConnection(url, user, password);
		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}

	public static void setAutoCommit(Connection connection, boolean auto) {
		try {
			connection.setAutoCommit(auto);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	
	public static void rollback(Connection connection) {
		try {
			connection.rollback();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	public static void close(Connection connection) {
		try {
			if (connection != null) {
				connection.close();
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	public static void close(PreparedStatement ps) {
		try {
			if (null != ps) {
				ps.close();
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	public static void close(ResultSet rs) {
		try {
			if (null != rs) {
				rs.close();
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	public static void close(PreparedStatement ps, ResultSet rs) {
		try {
			close(ps);
			close(rs);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	
	public static void main(String[] args) {
		DBUtil db = new DBUtil();
		/*db.insert();
		db.find(); */
		db.findOne();
	}
	 
}