thymeleaf迭代map集合

   <tr  th:each="item:${session.p1}">

<!-- 查找数据  获取当前点击的对应的id-->
<!--item.getKey()  获取当前map的键-->
<!--  item.value.id 获取map集合变量id的值-->
        <td name="price" th:text="${item.getKey()}"></td>
        <td name="price" th:text="${item.value.id}"></td>
        <td name="price" th:text="${item.value.st1}"></td>
        <td name="price" th:text="${item.value.st2}"></td>

    </tr>

@WebServlet("/index")
public class Ceshi extends ViewBaseServlet {
  static Map<String,Pring> p1=new HashMap();


   static  {
        p1.put("1",new Pring(1, "香蕉","20"));
        p1.put("2",new Pring(2, "苹果","12"));
        p1.put("3",new Pring(3, "西瓜","30"));
    }
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

        HttpSession session = req.getSession();
        session.setAttribute("p1", p1);
        super.processTemplate("index",req,resp);


    }
}

通过

th:each="item:${session.p1}"遍历map集合

item.value.id 获取map集合变量id的值

item.getKey()  获取当前map的键

使用这个对数据进行保存

HttpSession session = req.getSession();
session.setAttribute("p1", p1);

也可以不用静态