做个简单的Java学生考勤系统08--完善老师相关功能
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前几篇，我们做出了老师显示，查询老师信息的功能，接下来是对老师方面功能的增强。
1、列出所有老师的方法
package servlet;
import java.io.FileInputStream;
import java.io.IOException;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import service.utilService;
import util.DB;
import model.TAdmin;
import model.Tkecheng;
import model.Tlaoshi;
public class laoshi_servlet extends HttpServlet
{
public void service(HttpServletRequest req,HttpServletResponse res)throws ServletException, IOException
{
String type=req.getParameter("type");
if(type.endsWith("laoshiAdd"))
{
laoshiAdd(req, res);
}
if(type.endsWith("laoshiMana"))
{
laoshiMana(req, res);
}
if(type.endsWith("laoshiDel"))
{
laoshiDel(req, res);
}
if(type.endsWith("laoshiEdit1"))
{
laoshiEdit1(req, res);
}
if(type.endsWith("laoshiEdit2"))
{
laoshiEdit2(req, res);
}
if(type.endsWith("laoshiAll"))
{
laoshiAll(req, res);
}
if(type.endsWith("daoru"))
{
daoru(req, res);
}
}
public void dispatch(String targetURI,HttpServletRequest request,HttpServletResponse response)
{
RequestDispatcher dispatch = getServletContext().getRequestDispatcher(targetURI);
try
{
dispatch.forward(request, response);
return;
}
catch (ServletException e)
{
e.printStackTrace();
}
catch (IOException e)
{
e.printStackTrace();
}
}
public void init(ServletConfig config) throws ServletException
{
super.init(config);
}
public void destroy()
{
}
}
方法讲解：所有的方法，包括管理老师信息，添加老师信息，查询所有老师信息，删除老师信息，编辑老师信息，用Excel导入老师信息
2、管理老师信息
public void laoshiMana(HttpServletRequest req,HttpServletResponse res) throws ServletException, IOException
{
List laoshiList=new ArrayList();
String sql="select * from t_laoshi where del='no'";
Object[] params={};
DB mydb=new DB();
try
{
mydb.doPstm(sql, params);
ResultSet rs=mydb.getRs();
while(rs.next())
{
Tlaoshi laoshi=new Tlaoshi();
laoshi.setId(rs.getInt("id"));
laoshi.setBianhao(rs.getString("bianhao"));
laoshi.setXingming(rs.getString("xingming"));
laoshi.setXingbie(rs.getString("xingbie"));
laoshi.setNianling(rs.getString("nianling"));
laoshi.setZhicheng(rs.getString("zhicheng"));
laoshi.setLoginname(rs.getString("loginname"));
laoshi.setLoginpw(rs.getString("loginpw"));
laoshi.setDel(rs.getString("del"));
laoshiList.add(laoshi);
}
rs.close();
}
catch(Exception e)
{
e.printStackTrace();
}
mydb.closed();
req.setAttribute("laoshiList", laoshiList);
req.getRequestDispatcher("admin/laoshi/laoshiMana.jsp").forward(req, res);
}
方法讲解：进入管理老师的界面
3、添加老师信息
public void laoshiAdd(HttpServletRequest req,HttpServletResponse res)
{
String bianhao=req.getParameter("bianhao");
String xingming=req.getParameter("xingming");
String xingbie=req.getParameter("xingbie");
String nianling=req.getParameter("nianling");
String zhicheng=req.getParameter("zhicheng");
String loginname=req.getParameter("loginname");
String loginpw=req.getParameter("loginpw");
String del="no";
String sql="insert into t_laoshi values(?,?,?,?,?,?,?,?)";
Object[] params={bianhao,xingming,xingbie,nianling,zhicheng,loginname,loginpw,del};
DB mydb=new DB();
mydb.doPstm(sql, params);
mydb.closed();
req.setAttribute("message", "操作成功");
req.setAttribute("path", "laoshi?type=laoshiMana");
String targetURL = "/common/success.jsp";
dispatch(targetURL, req, res);
}
4、查询所有老师信息
public void laoshiAll(HttpServletRequest req,HttpServletResponse res) throws ServletException, IOException
{
List laoshiList=new ArrayList();
String sql="select * from t_laoshi where del='no'";
Object[] params={};
DB mydb=new DB();
try
{
mydb.doPstm(sql, params);
ResultSet rs=mydb.getRs();
while(rs.next())
{
Tlaoshi laoshi=new Tlaoshi();
laoshi.setId(rs.getInt("id"));
laoshi.setBianhao(rs.getString("bianhao"));
laoshi.setXingming(rs.getString("xingming"));
laoshi.setXingbie(rs.getString("xingbie"));
laoshi.setNianling(rs.getString("nianling"));
laoshi.setZhicheng(rs.getString("zhicheng"));
laoshi.setLoginname(rs.getString("loginname"));
laoshi.setLoginpw(rs.getString("loginpw"));
laoshi.setDel(rs.getString("del"));
laoshiList.add(laoshi);
}
rs.close();
}
catch(Exception e)
{
e.printStackTrace();
}
mydb.closed();
req.setAttribute("laoshiList", laoshiList);
req.getRequestDispatcher("admin/laoshi/laoshiAll.jsp").forward(req, res);
}
5、删除老师信息
public void laoshiDel(HttpServletRequest req,HttpServletResponse res)
{
String sql="update t_laoshi set del='yes' where id="+Integer.parseInt(req.getParameter("id"));
Object[] params={};
DB mydb=new DB();
mydb.doPstm(sql, params);
mydb.closed();
req.setAttribute("message", "操作成功");
req.setAttribute("path", "laoshi?type=laoshiMana");
String targetURL = "/common/success.jsp";
dispatch(targetURL, req, res);
}
6、编辑老师信息
public void laoshiEdit1(HttpServletRequest req,HttpServletResponse res) throws ServletException, IOException
{
int id=Integer.parseInt(req.getParameter("id")) ;
req.setAttribute("laoshi", utilService.get_laoshi(id));
req.getRequestDispatcher("admin/laoshi/laoshiEdit1.jsp").forward(req, res);
}
public void laoshiEdit2(HttpServletRequest req,HttpServletResponse res)
{
String bianhao=req.getParameter("bianhao");
String xingming=req.getParameter("xingming");
String xingbie=req.getParameter("xingbie");
String nianling=req.getParameter("nianling");
String zhicheng=req.getParameter("zhicheng");
String loginname=req.getParameter("loginname");
String loginpw=req.getParameter("loginpw");
int id=Integer.parseInt(req.getParameter("id"));
String sql="update t_laoshi set bianhao=?,xingming=?,xingbie=?,nianling=?,zhicheng=?,loginname=?,loginpw=? where id=?";
Object[] params={bianhao,xingming,xingbie,nianling,zhicheng,loginname,loginpw,id};
DB mydb=new DB();
mydb.doPstm(sql, params);
mydb.closed();
req.setAttribute("message", "操作成功");
req.setAttribute("path", "laoshi?type=laoshiMana");
String targetURL = "/common/success.jsp";
dispatch(targetURL, req, res);
}
方法讲解：需要注意的是，laoshiEdit1方法是将老师信息带到编辑页面，laoshiEdit2方法进行正在的保存
7、用Excel导入老师信息
public void daoru(HttpServletRequest req,HttpServletResponse res) throws IOException
{
String fujianXingming=req.getParameter("fujianXingming");
String lujing = req.getSession().getServletContext().getRealPath("upload")+"/"+fujianXingming;
FileInputStream fin=new FileInputStream(lujing);
HSSFWorkbook workbook=new HSSFWorkbook(fin);//创建工作薄
HSSFSheet sheet=workbook.getSheetAt(0);//得到工作表
HSSFRow row=null;//对应excel的行
HSSFCell cell=null;//对应excel的列
int totalRow=sheet.getLastRowNum();//得到excel的总记录条数
for(int i=1;i<=totalRow;i++)
{
row=sheet.getRow(i);
cell=row.getCell(0);
String bianhao=cell.getRichStringCellValue().toString();
cell=row.getCell(1);
String xingming=cell.getRichStringCellValue().toString();
cell=row.getCell(2);
String xingbie=cell.getRichStringCellValue().getString();
cell=row.getCell(3);
String nianling=cell.getRichStringCellValue().toString();
cell=row.getCell(4);
String zhicheng=cell.getRichStringCellValue().toString();
cell=row.getCell(5);
String loginname=cell.getRichStringCellValue().toString();
cell=row.getCell(6);
String loginpw=cell.getRichStringCellValue().toString();
String del="no";
String sql="insert into t_laoshi values(?,?,?,?,?,?,?,?)";
Object[] params={bianhao,xingming,xingbie,nianling,zhicheng,loginname,loginpw,del};
DB mydb=new DB();
mydb.doPstm(sql, params);
mydb.closed();
}
req.setAttribute("message", "操作成功");
req.setAttribute("path", "laoshi?type=laoshiMana");
String targetURL = "/common/success.jsp";
dispatch(targetURL, req, res);
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