springboot2.7.15+thymeleaf 代码

package com.ambow.sm03.controller; import com.ambow.sm03.model.DeptEntity; import com.ambow.sm03.model.EmpEntity; import com.ambow.sm03.model.EmpEntityVo; import com.ambow.sm03.model.User; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import javax.servlet.http.HttpSession; import java.util.ArrayList; import java.util.Date; import java.util.List; @Controller public class EmpController { @RequestMapping("allDept") public String allDept(Model model){ List<DeptEntity> list = new ArrayList<>(); list.add(new DeptEntity(1,"研发")); list.add(new DeptEntity(2,"研发2")); list.add(new DeptEntity(3,"研发3")); model.addAttribute("depts",list); return "empAdd"; } @RequestMapping("addEmp") public String addEmp(EmpEntity empEntity){ System.out.println("add emp..."+empEntity); return "index"; } @RequestMapping("allEmp") public String allEmp(Model model){ List<EmpEntityVo> list = new ArrayList<>(); list.add(new EmpEntityVo(1,"高价咋","123",new Date(),new DeptEntity(1,"研发"))); list.add(new EmpEntityVo(2,"组合","123",new Date(),new DeptEntity(2,"研发2"))); list.add(new EmpEntityVo(3,"可乐","123",new Date(),new DeptEntity(3,"研发3"))); model.addAttribute("list",list); return "empAll"; } @RequestMapping("byid") public String byid(int id,Model model){ List<EmpEntityVo> list = new ArrayList<>(); list.add(new EmpEntityVo(1,"高价咋","123",new Date(),new DeptEntity(1,"研发"))); list.add(new EmpEntityVo(2,"组合","123",new Date(),new DeptEntity(2,"研发2"))); list.add(new EmpEntityVo(3,"可乐","123",new Date(),new DeptEntity(3,"研发3"))); EmpEntityVo emp = null; for(EmpEntityVo item : list){ if(item.getEid()== id){ emp = item ; break; } } model.addAttribute("emp",emp); List<DeptEntity> list2 = new ArrayList<>(); list2.add(new DeptEntity(1,"研发")); list2.add(new DeptEntity(2,"研发2")); list2.add(new DeptEntity(3,"研发3")); model.addAttribute("depts",list2); return "empUpdate"; } @RequestMapping("loginui") public String loginui(){ return "login"; } @RequestMapping("loginout") public String loginout(HttpSession session){ session.removeAttribute("loginemp"); return "login"; } @RequestMapping("login") public String xx(String uname,String upwd,HttpSession session){ if(uname.equals("admin")&& upwd.equals("123")){ User user = new User(uname,upwd); session.setAttribute("loginemp",user); return "index"; }else{ return "login"; } } }