storagedao.java

来自「struts做得固定资产管理系统 带毕业论文完整版」· Java 代码 · 共 153 行

package com.qrsx.appcam.dao;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import com.qrsx.appcam.model.Storage;

public class StorageDAO extends BaseDAO {

	/**
	 * 创建仓库
	 * 
	 * @param storage
	 */
	public void create(Storage storage) throws SQLException {

		String sql = "Insert Into storage(name, description) Values(?, ?)";

		// 设置参数值
		ps = conn.prepareStatement(sql);
		ps.setString(1, storage.getName());
		ps.setString(2, storage.getDescription());

		// 执行
		ps.executeUpdate();
	}

	/**
	 * 更新仓库信息
	 * 
	 * @param storage
	 */
	public void update(Storage storage) throws SQLException {

		String sql = "Update deptment set name=?, description=? where id=? ";

		// 设置参数值
		ps = conn.prepareStatement(sql);
		ps.setString(1, storage.getName());
		ps.setString(2, storage.getDescription());
		ps.setInt(3, storage.getId());

		// 执行
		ps.executeUpdate();
	}

	/**
	 * 删除仓库
	 * 
	 * @param storageId
	 *            要删除的仓库的主键
	 * @return 删除的数目
	 */
	public int delete(Integer storageId) throws SQLException {
		String sql = "Delete from storage where id=? ";

		// 设置参数值
		ps = conn.prepareStatement(sql);
		ps.setInt(1, storageId);

		// 执行
		int total = ps.executeUpdate();
		return total;
	}

	/**
	 * 根据主键检索仓库
	 * 
	 * @param storageId
	 *            要检索的仓库主键
	 * @return 检索到的仓库
	 */
	public Storage findById(Integer storageId) throws SQLException {
		String sql = "Select * from storage where id=? ";

		// 设置参数值并执行查询
		ps = conn.prepareStatement(sql);
		ps.setInt(1, storageId);
		ResultSet rs = ps.executeQuery();

		Storage storage = null;
		if (rs.next()) {
			storage = new Storage();
			storage.setId(rs.getInt("id"));
			storage.setName(rs.getString("name"));
			storage.setDescription(rs.getString("description"));
		}

		return storage;
	}

	/**
	 * 检索所有的仓库信息
	 * 
	 * @return List<Storage>
	 * @throws SQLException
	 */
	public List<Storage> findAll() throws SQLException {
		String sql = "Select * from Storage ";

		// 执行查询
		ps = conn.prepareStatement(sql);
		ResultSet rs = ps.executeQuery();

		// 将查询结果组装至deptment实体对象
		Storage storage = null;
		List<Storage> list = new ArrayList<Storage>();
		while (rs.next()) {
			storage = new Storage();
			storage.setId(rs.getInt("id"));
			storage.setName(rs.getString("name"));
			storage.setDescription(rs.getString("description"));
			list.add(storage);
		}

		return list;
	}

	/**
	 * 检索所有仓库的信息
	 * 
	 * @param storage
	 * @return List<Storage>
	 * @throws SQLException
	 */

	public List<Storage> list(Storage storage) throws SQLException {
		String sql = "Select * from storage where 1=1 ";

		// 根据仓库名称检索
		if (storage.getName() != null && !storage.getName().equals("")) {
			sql = sql + " and name like '%" + storage.getName() + "%'";
		}

		// 执行查询
		ps = conn.prepareStatement(sql);
		ResultSet rs = ps.executeQuery();

		// 将查询结果组装至storage实体对象
		Storage storage1 = null;
		List<Storage> list = new ArrayList<Storage>();
		while (rs.next()) {
			storage1 = new Storage();
			storage1.setId(rs.getInt("id"));
			storage1.setName(rs.getString("name"));
			storage1.setDescription(rs.getString("description"));
			list.add(storage1);
		}
		return list;
	}
}