sectorda.java

医药供应链管理系统

package com.captainli.dboperation;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;

import javax.servlet.jsp.tagext.TryCatchFinally;

import com.captainli.bean.SectorBean;
import com.captainli.struts.form.SectorForm;
import com.captainli.util.GetConnection;

/**
 * sector表数据库操作类
 * @author CaptainLi
 *
 */
public class SectorDA {
	private Connection conn = GetConnection.getConn();
	private PreparedStatement pstmt = null;
	private Statement stmt = null;
	private ResultSet rs = null;
	/**
	 * 关闭数据库对象
	 *
	 */
	public void closeDB(){
		try {
			if(rs != null){
				rs.close();
			}
			if(stmt != null){
				stmt.close();
			}
			if(pstmt != null){
				pstmt.close();
			}
			if(conn != null){
				conn.close();
			}
		} catch (Exception e) {
			e.getStackTrace();
		}
	}
	/**
	 * 返回所有部门
	 */
	public ArrayList selectSector(){
		ArrayList arry = new ArrayList();
		SectorBean bean = null;
		String sql = "select * from sector order by s_id";
		try {
			stmt = conn.createStatement();
			rs = stmt.executeQuery(sql);
			while(rs.next()){
				bean = new SectorBean();
				bean.setS_id(rs.getInt("s_id"));
				bean.setS_name(rs.getString("s_name"));
				arry.add(bean);
			}
		} catch (Exception e) {
			// TODO: handle exception
		}finally{
			closeDB();
		}
		return arry;
	}
	/**
	 * 通过ID得到部门
	 * @param s_id
	 * @return
	 */
	public String selectSectorByID(int s_id){
		String tmp = "";
		String sql = "select s_name from sector where s_id = ?";
		try {
			pstmt = conn.prepareStatement(sql);
			pstmt.setInt(1, s_id);
			rs = pstmt.executeQuery();
			if(rs.next()){
				tmp = rs.getString("s_name");
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{
			closeDB();
		}
		return tmp;
	}
	/**
	 * 添加部门
	 */
	public void addSector(SectorForm form){
		String sql = "insert into sector values (?)";
		try {
			pstmt = conn.prepareStatement(sql);
			pstmt.setString(1, form.getS_name());
			pstmt.execute();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{
			closeDB();
		}
	}
	/**
	 * 修改部门
	 */
	public void updateSector(SectorForm form, int s_id){
		String sql = "update sector set s_name = ? where s_id = ?";
		try {
			pstmt = conn.prepareStatement(sql);
			pstmt.setString(1, form.getS_name());
			pstmt.setInt(2, s_id);
			pstmt.executeUpdate();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{
			closeDB();
		}
	}
}