jdbc连接数据库代码

try {

			//1、加载驱动

			Class.forName("oracle.jdbc.OracleDriver");

		} catch (ClassNotFoundException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		}

		//2、创建连接

		Connection conn = null;

		 try {

			conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:orcl", "scott", "tiger");

//jdbc:mysql://localhost:3306/myProject

		} catch (SQLException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		}



		PreparedStatement pstmt = null;

		List<ExitFinanceBean> list1 = new ArrayList<ExitFinanceBean>();

		try {

			String sql = "";

						pstmt = conn.prepareStatement(sql);

			ResultSet rs = pstmt.executeQuery();

			while(rs.next()){

				ExitFinanceBean bean = new ExitFinanceBean();

				bean.setE_id(rs.getInt("e_id"));

				bean.setName(rs.getString("e_name"));

						

				list1.add(bean);

			}

			

		} catch (SQLException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		} finally{

			 try {

				 	if(pstmt!=null||conn!=null){

				 		pstmt.close();

						conn.close();

				 	}

					

				} catch (SQLException e) {

					// TODO Auto-generated catch block

					e.printStackTrace();

				}

		}