JDBC數據訪問操作流程

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1.準備資源

2.啓動事物

3.在事務中執行具體數據訪問操作

4.提交/回滾事務

5.關閉資源，處理異常

*****************不能更加簡單了！！！************************

public class TestDao {

	public void save(User user)throws Exception{
		Connection connection=null;
		PreparedStatement stmt=null;
		try {
			//1.獲取資源
			connection=getConnection();
			
			//2.啓動事務
			connection.setAutoCommit(false);
			//3.具體數據訪問操作和處理
			stmt=connection.prepareStatement("INSERT INTO user(ID,NAME) VALUES(?,?)");
			stmt.setInt(1, user.getUserId());
			stmt.setString(2, user.getUsername());
			stmt.execute();
			//4.事務提交
			connection.commit();
		} catch (Exception e) {
			try {
				//5.事務回滾
				connection.rollback();
			} catch (SQLException e1) {
				// TODO Auto-generated catch block
				e1.printStackTrace();
			}
			throw e;
		}finally{
			//6.釋放資源
			try {
				stmt.close();
				connection.close();
			} catch (Exception e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}
}