SpringMVC框架
7.3 RESTRUL_CRUD_显示所有员工信息
- 增加页面链接
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<a href="empList">To Employee List</a> |
- 增加处理器
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package com.atguigu.springmvc.crud.handlers; import java.util.Map; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import com.atguigu.springmvc.crud.dao.EmployeeDao; @Controller public class EmployeeHandler { @Autowired private EmployeeDao employeeDao ; @RequestMapping("/empList") public String empList(Map<String,Object> map){ map.put("empList", employeeDao.getAll()); //默认存放到request域中 return "list"; } } |
- SpringMVC中没遍历的标签，需要使用jstl标签进行集合遍历增加jstl标签库jar包
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<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> <c:if test="${empty requestScope.empList }"> 对不起，没有找到任何员工！ </c:if> <c:if test="${!empty requestScope.empList }"> <table border="1" cellpadding="10" cellspacing="0"> <tr> <td>EmpId</td> <td>LastName</td> <td>Gender</td> <td>Email</td> <td>DepartmentName</td> <td>Edit</td> <td>Delete</td> </tr> <c:forEach items="${requestScope.empList }" var="emp"> <tr> <td>${emp.id }</td> <td>${emp.lastName }</td> <td>${emp.gender==0?"Female":"Male" }</td> <td>${emp.email }</td> <td>${emp.department.departmentName }</td> <td><a href="">Edit</a></td> <td><a href="">Delete</a></td> </tr> </c:forEach> </table> </c:if> </body> </html> |
