员工信息管理系统OA

package web; import java.io.IOException; import java.io.PrintWriter; import java.util.List; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import service.UserService; import service.UserServiceImpl; import dao.EmpDao; import dao.EmpDaoImpl; import entity.Emp; /** * 类说明: * 优化合并Servlet * * @author qianliangguo */ public class ActionServlet extends HttpServlet { EmpDao empDao = new EmpDaoImpl(); UserService userService = new UserServiceImpl(); @Override protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { //设置获得请求参数的解码方式 request.setCharacterEncoding("utf-8"); response.setContentType("text/html;charset=utf-8"); PrintWriter out = response.getWriter(); //获取请求资源路径/ems/addEmp.do String url = request.getRequestURI(); //切分url地址 保留addEmp String uri = url.substring(url.lastIndexOf("/")+1, url.lastIndexOf(".")); if(uri.equals("queryEmp")){ /* * 查询 */ //查询所有员工记录 List<Emp> list = empDao.queryAllEmp(); //将员工记录保存到request作用域中 request.setAttribute("employees", list); //转发到listEmp.jsp request.getRequestDispatcher("/pages/listEmp.jsp").forward(request, response); }else if(uri.equals("loadEmp")){ /* * 加载 */ //依旧想要修改的id,查询这个员工原有信息 String id = request.getParameter("id"); Emp emp = empDao.selectEmpById(Integer.parseInt(id)); //将员工信息保存到request作用域，转发到一个修改表单的页面 request.setAttribute("employee", emp); request.getRequestDispatcher("/pages/loadEmp.jsp").forward(request, response); }else if(uri.equals("updateEmp")){ /* * 修改 */ //获得修改之后的Emp信息 String id = request.getParameter("id"); String name = request.getParameter("name"); String salary = request.getParameter("salary"); String age = request.getParameter("age"); Emp emp = new Emp(Integer.parseInt(id),name,Double.parseDouble(salary),Integer.parseInt(age)); //修改用户信息 empDao.updateEmp(emp); //修改成功后重定向到所有员工列表queryEmp response.sendRedirect("queryEmp.do"); }else if(uri.equals("addEmp")){ /* * 添加 */ String name = request.getParameter("name"); String salary = request.getParameter("salary"); String age = request.getParameter("age"); Emp emp = new Emp(null,name,Double.parseDouble(salary),Integer.parseInt(age)); empDao.addEmp(emp); //添加成功，重定向到queryEmp中 response.sendRedirect("queryEmp.do"); }else if(uri.equals("deleteEmp")){ /* * 删除 */ String id = request.getParameter("id"); empDao.deleteEmp(Integer.parseInt(id)); //删除成功后重定向到员工列表 response.sendRedirect("queryEmp.do"); } else if(uri.equals("login")){ /* * 登录 */ //获得客户端过来的账户和密码 String username = request.getParameter("username"); String password = request.getParameter("password"); String loginRS = userService.login(request,username,password); //将loginRS登录结果字符串返回到jsp out.write(loginRS); }else if(uri.equals("logout")){ //清除session request.getSession().invalidate(); } } }