employee-crud

package cn.emp.controller; import cn.emp.entity.Employee; import cn.emp.service.IEmployeeService; import cn.emp.service.impl.EmployeeServiceImpl; 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 java.io.IOException; import java.util.List; @WebServlet("/emp/*") public class EmployeeController extends HttpServlet { private IEmployeeService employeeService = new EmployeeServiceImpl(); @Override protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { String uri = req.getRequestURI(); //System.out.println("uri:"+uri); if (uri.equals("/emp/list")){ //列表查询 list(req,resp); }else if(uri.equals("/emp/delete")){ //删除员工 delete(req,resp); }else if(uri.equals("/emp/showAdd")){ //跳转新增页面 req.getRequestDispatcher("/WEB-INF/views/addEmp.jsp").forward(req,resp); }else if(uri.equals("/emp/add")){ //新增员工 add(req,resp); }else if(uri.equals("/emp/showUpdate")){ //跳转修改页面 showUpdate(req,resp); }else if(uri.equals("/emp/update")){ //修改员工 update(req,resp); } } //修改员工 protected void update(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { //1.设置编码 req.setCharacterEncoding("UTF-8"); //2.获取参数 Long id = Long.valueOf(req.getParameter("id")); String name = req.getParameter("name"); Integer age = Integer.valueOf(req.getParameter("age")); Integer sex = Integer.valueOf(req.getParameter("sex")); String phone = req.getParameter("phone"); String address = req.getParameter("address"); Employee employee = new Employee(); employee.setId(id); employee.setName(name); employee.setAge(age); employee.setSex(sex); employee.setPhone(phone); employee.setAddress(address); //3.调用业务层执行修改 employeeService.update(employee); //4.重定向到列表页 resp.sendRedirect("/emp/list"); } //跳转修改页面 protected void showUpdate(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { //1.获取id Long id = Long.valueOf(req.getParameter("id")); //2.基于id查询员工信息 Employee employee = employeeService.selectById(id); //3.将员工信息存入request作用域中 req.setAttribute("employee",employee); //4.转发到修改页面，并展示员工信息 req.getRequestDispatcher("/WEB-INF/views/updateEmp.jsp").forward(req,resp); } //新增员工 protected void add(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { //1.设置编码 req.setCharacterEncoding("UTF-8"); //2.获取参数 String name = req.getParameter("name"); Integer age = Integer.valueOf(req.getParameter("age")); Integer sex = Integer.valueOf(req.getParameter("sex")); String phone = req.getParameter("phone"); String address = req.getParameter("address"); Employee employee = new Employee(); employee.setName(name); employee.setAge(age); employee.setSex(sex); employee.setPhone(phone); employee.setAddress(address); //3.调用业务层执行新增 employeeService.insert(employee); //4.重定向到列表页 resp.sendRedirect("/emp/list"); } //删除员工 protected void delete(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { //1.获取id String id = req.getParameter("id"); //2.调用业务层执行删除 employeeService.delete(Long.valueOf(id)); //3.重定向到列表页 resp.sendRedirect("/emp/list"); } //列表查询 protected void list(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { //1.调用业务层获取员工列表数据 List<Employee> employees = employeeService.selectAll(); //2.封装到request作用域中 req.setAttribute("employees",employees); //3.转发到列表页面，展示数据 req.getRequestDispatcher("/WEB-INF/views/empList.jsp").forward(req,resp); } }