请帮我完成一篇基于Spring构建网上花店系统的数据访问层(DAO)主要负责与数据库进行交互，进行数据的增、删、改、查的代码

好的，以下是一份基于Spring构建网上花店系统的数据访问层(DAO)代码示例：

package com.example.flower_shop.dao;

import com.example.flower_shop.entity.Flower;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Repository;

import java.util.List;

@Repository
public class FlowerDaoImpl implements FlowerDao {

    @Autowired
    private JdbcTemplate jdbcTemplate;

    @Override
    public void addFlower(Flower flower) {
        String sql = "INSERT INTO flower (name, price, description, image) VALUES (?, ?, ?, ?)";
        jdbcTemplate.update(sql, flower.getName(), flower.getPrice(), flower.getDescription(), flower.getImage());
    }

    @Override
    public void deleteFlower(int id) {
        String sql = "DELETE FROM flower WHERE id=?";
        jdbcTemplate.update(sql, id);
    }

    @Override
    public void updateFlower(Flower flower) {
        String sql = "UPDATE flower SET name=?, price=?, description=?, image=? WHERE id=?";
        jdbcTemplate.update(sql, flower.getName(), flower.getPrice(), flower.getDescription(), flower.getImage(), flower.getId());
    }

    @Override
    public Flower getFlowerById(int id) {
        String sql = "SELECT * FROM flower WHERE id=?";
        return jdbcTemplate.queryForObject(sql, new Object[]{id}, new FlowerMapper());
    }

    @Override
    public List<Flower> getFlowerList() {
        String sql = "SELECT * FROM flower";
        return jdbcTemplate.query(sql, new FlowerMapper());
    }

    private static class FlowerMapper implements RowMapper<Flower> {
        @Override
        public Flower mapRow(ResultSet rs, int rowNum) throws SQLException {
            Flower flower = new Flower();
            flower.setId(rs.getInt("id"));
            flower.setName(rs.getString("name"));
            flower.setPrice(rs.getDouble("price"));
            flower.setDescription(rs.getString("description"));
            flower.setImage(rs.getString("image"));
            return flower;
        }
    }
}

这份代码使用了Spring的JdbcTemplate来进行数据库操作。其中，FlowerDao接口定义了对花卉数据的增、删、改、查等操作；而FlowerDaoImpl类则实现了这些操作的具体实现，同时使用了JdbcTemplate来进行数据库的CRUD操作。具体的实现细节可以参考代码注释。