员工工资管理系统---Servlet层

Servlet.java

package Servlet;
import Dao.*;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.util.List;
@WebServlet("/Servlet")
public class Servlet extends HttpServlet{
    private static final long serialVersionUID = 1L;

    public Servlet() {
        super();
    }
    Dao dao=new Dao();

    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        req.setCharacterEncoding("utf-8");
        String method = req.getParameter("method");
        if ("login".equals(method)) {
            login(req, resp);
        }if("look".equals(method)){
            look(req,resp);
        }if("search".equals(method)){
            search(req,resp);
        }if("getbookbyname".equals(method)){
            getbookbyname(req,resp);
        }/*if("jieBooklist".equals(method)){
            jieBooklist(req,resp);
        }if("huanBookbybid".equals(method)){
            huanBookbybid(req,resp);
        }*/if("addBook".equals(method)){
            addBook(req,resp);
        }

        /*
         if("".equals(method)){
            (req,resp);
        }
         */
    }
    //------------------------------------------------------------------------------------------------------
    private void login(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException {
        // TODO Auto-generated method stub
        String id = req.getParameter("id");
        HttpSession session =req.getSession();
        session.setAttribute("id",id);
        String password = req.getParameter("password");
        System.out.println("servlet.login"+" id="+id+" password="+password);
        User user=dao.login(id);
        System.out.println(user.getForm());
        if(user.getPassword()!=null&&user.getPassword().equals(password)) {
            req.setAttribute("message", "登录成功");
            if (user.getForm().equals("管理员")) {
                req.getRequestDispatcher("admin.jsp").forward(req, resp);
            } else if (user.getForm().equals("员工")) {
                req.getRequestDispatcher("teacher.jsp").forward(req, resp);
            }
        }else{
            req.setAttribute("message","登录失败");
            req.getRequestDispatcher("index.jsp").forward(req,resp);
        }
    }

    private void look(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException {
        req.setCharacterEncoding("utf-8");
        List<book> books = dao.look();
        req.setAttribute("books",books);
        req.getRequestDispatcher("look.jsp").forward(req,resp);
    }

    private void search(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException{
        req.setCharacterEncoding("utf-8");
        String name = req.getParameter("name");
        List<book> books = dao.search(name);
        req.setAttribute("books", books);
        req.getRequestDispatcher("searchlist.jsp").forward(req,resp);
    }

    private void getbookbyname(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException{
        req.setCharacterEncoding("utf-8");
        String name = req.getParameter("name");
        boolean a=dao.huan(name);
        if(a)
        {
                req.setAttribute("message", "删除成功");
                req.getRequestDispatcher("teacher.jsp").forward(req,resp);
        }
        req.setAttribute("message", "删除失败");
        req.getRequestDispatcher("teacher.jsp").forward(req,resp);
    }
   

    private void addBook(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException {
        // TODO Auto-generated method stub
        String name = req.getParameter("name");
        String sex = req.getParameter("sex");
        String age = req.getParameter("age");
        String unit = req.getParameter("unit");
        String work = req.getParameter("work");
        String swage = req.getParameter("swage");
        String a1 = req.getParameter("a1");
        String a2 = req.getParameter("a2");
        String b1 = req.getParameter("b1");
        String b2 = req.getParameter("b2");
        String ewage=String.valueOf(Integer.valueOf(swage)+Integer.valueOf(a1)+Integer.valueOf(a2)-Integer.valueOf(b1)-Integer.valueOf(b2));
        book book = new book(name,sex,age,unit,work,ewage);
        if (dao.addBook(book)) {
            req.setAttribute("message", "保存成功!");
            req.getRequestDispatcher("admin.jsp").forward(req, resp);
        } else {
            req.setAttribute("message", "保存失败!");
            req.getRequestDispatcher("admin.jsp").forward(req, resp);
        }
    }

}