学习笔记——spring boot实现用户登录后查看员工列表

时间:2020-04-19
本文章向大家介绍学习笔记——spring boot实现用户登录后查看员工列表，主要包括学习笔记——spring boot实现用户登录后查看员工列表使用实例、应用技巧、基本知识点总结和需要注意事项，具有一定的参考价值，需要的朋友可以参考一下。

要求：

1.RestfulCRUD：CRUD满足Rest风格；

　　URI：满足   /资源名称/资源标识　　 HTTP请求方式区分对资源CRUD操作

 

2.需要满足的格式

 3.完成员工查询列表

（1）在src/main/resources/templates/dashboard.html中把Customers改成员工管理，然后在HTML头部引入xmlns:th="http://www.thymeleaf.org"模板，并在头部把css样式修改成模板引用

    <title>Dashboard Template for Bootstrap</title>
    <!-- Bootstrap core CSS -->
    <link href="asserts/css/bootstrap.min.css" th:href="@{/webjars/bootstrap/4.0.0/css/bootstrap.css}" rel="stylesheet">

    <!-- Custom styles for this template -->
    <link href="asserts/css/dashboard.css" th:href="@{/asserts/css/dashboard.css}" rel="stylesheet">

（2）src/main/resources/templates/emp/中添加一个list.html

<!DOCTYPE html>
<!-- saved from url=(0052)http://getbootstrap.com/docs/4.0/examples/dashboard/ -->
<html lang="en">

<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
    <meta name="description" content="">
    <meta name="author" content="">

    <title>Dashboard Template for Bootstrap</title>
    <!-- Bootstrap core CSS -->
    <link href="asserts/css/bootstrap.min.css" th:href="@{/webjars/bootstrap/4.0.0/css/bootstrap.css}" rel="stylesheet">

    <!-- Custom styles for this template -->
    <link href="asserts/css/dashboard.css" th:href="@{/asserts/css/dashboard.css}" rel="stylesheet">
    <style type="text/css">
        /* Chart.js */

        @-webkit-keyframes chartjs-render-animation {
            from {
                opacity: 0.99
            }
            to {
                opacity: 1
            }
        }

        @keyframes chartjs-render-animation {
            from {
                opacity: 0.99
            }
            to {
                opacity: 1
            }
        }

        .chartjs-render-monitor {
            -webkit-animation: chartjs-render-animation 0.001s;
            animation: chartjs-render-animation 0.001s;
        }
    </style>
</head>

<body>
<nav class="navbar navbar-dark sticky-top bg-dark flex-md-nowrap p-0">
    <a class="navbar-brand col-sm-3 col-md-2 mr-0" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">Company name</a>
    <input class="form-control form-control-dark w-100" type="text" placeholder="Search" aria-label="Search">
    <ul class="navbar-nav px-3">
        <li class="nav-item text-nowrap">
            <a class="nav-link" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">Sign out</a>
        </li>
    </ul>
</nav>

<div class="container-fluid">
    <div class="row">
        <nav class="col-md-2 d-none d-md-block bg-light sidebar">
            <div class="sidebar-sticky">
                <ul class="nav flex-column">
                    <li class="nav-item">
                        <a class="nav-link active" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">
                            <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-home">
                                <path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"></path>
                                <polyline points="9 22 9 12 15 12 15 22"></polyline>
                            </svg>
                            Dashboard <span class="sr-only">(current)</span>
                        </a>
                    </li>
                    <li class="nav-item">
                        <a class="nav-link" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">
                            <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-file">
                                <path d="M13 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V9z"></path>
                                <polyline points="13 2 13 9 20 9"></polyline>
                            </svg>
                            Orders
                        </a>
                    </li>
                    <li class="nav-item">
                        <a class="nav-link" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">
                            <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-shopping-cart">
                                <circle cx="9" cy="21" r="1"></circle>
                                <circle cx="20" cy="21" r="1"></circle>
                                <path d="M1 1h4l2.68 13.39a2 2 0 0 0 2 1.61h9.72a2 2 0 0 0 2-1.61L23 6H6"></path>
                            </svg>
                            Products
                        </a>
                    </li>
                    <li class="nav-item">
                        <a class="nav-link" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">
                            <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-users">
                                <path d="M17 21v-2a4 4 0 0 0-4-4H5a4 4 0 0 0-4 4v2"></path>
                                <circle cx="9" cy="7" r="4"></circle>
                                <path d="M23 21v-2a4 4 0 0 0-3-3.87"></path>
                                <path d="M16 3.13a4 4 0 0 1 0 7.75"></path>
                            </svg>
                            Customers
                        </a>
                    </li>
                    <li class="nav-item">
                        <a class="nav-link" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">
                            <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-bar-chart-2">
                                <line x1="18" y1="20" x2="18" y2="10"></line>
                                <line x1="12" y1="20" x2="12" y2="4"></line>
                                <line x1="6" y1="20" x2="6" y2="14"></line>
                            </svg>
                            Reports
                        </a>
                    </li>
                    <li class="nav-item">
                        <a class="nav-link" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">
                            <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-layers">
                                <polygon points="12 2 2 7 12 12 22 7 12 2"></polygon>
                                <polyline points="2 17 12 22 22 17"></polyline>
                                <polyline points="2 12 12 17 22 12"></polyline>
                            </svg>
                            Integrations
                        </a>
                    </li>
                </ul>

                <h6 class="sidebar-heading d-flex justify-content-between align-items-center px-3 mt-4 mb-1 text-muted">
                    <span>Saved reports</span>
                    <a class="d-flex align-items-center text-muted" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">
                        <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-plus-circle"><circle cx="12" cy="12" r="10"></circle><line x1="12" y1="8" x2="12" y2="16"></line><line x1="8" y1="12" x2="16" y2="12"></line></svg>
                    </a>
                </h6>
                <ul class="nav flex-column mb-2">
                    <li class="nav-item">
                        <a class="nav-link" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">
                            <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-file-text">
                                <path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"></path>
                                <polyline points="14 2 14 8 20 8"></polyline>
                                <line x1="16" y1="13" x2="8" y2="13"></line>
                                <line x1="16" y1="17" x2="8" y2="17"></line>
                                <polyline points="10 9 9 9 8 9"></polyline>
                            </svg>
                            Current month
                        </a>
                    </li>
                    <li class="nav-item">
                        <a class="nav-link" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">
                            <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-file-text">
                                <path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"></path>
                                <polyline points="14 2 14 8 20 8"></polyline>
                                <line x1="16" y1="13" x2="8" y2="13"></line>
                                <line x1="16" y1="17" x2="8" y2="17"></line>
                                <polyline points="10 9 9 9 8 9"></polyline>
                            </svg>
                            Last quarter
                        </a>
                    </li>
                    <li class="nav-item">
                        <a class="nav-link" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">
                            <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-file-text">
                                <path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"></path>
                                <polyline points="14 2 14 8 20 8"></polyline>
                                <line x1="16" y1="13" x2="8" y2="13"></line>
                                <line x1="16" y1="17" x2="8" y2="17"></line>
                                <polyline points="10 9 9 9 8 9"></polyline>
                            </svg>
                            Social engagement
                        </a>
                    </li>
                    <li class="nav-item">
                        <a class="nav-link" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">
                            <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-file-text">
                                <path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"></path>
                                <polyline points="14 2 14 8 20 8"></polyline>
                                <line x1="16" y1="13" x2="8" y2="13"></line>
                                <line x1="16" y1="17" x2="8" y2="17"></line>
                                <polyline points="10 9 9 9 8 9"></polyline>
                            </svg>
                            Year-end sale
                        </a>
                    </li>
                </ul>
            </div>
        </nav>

        <main role="main" class="col-md-9 ml-sm-auto col-lg-10 pt-3 px-4">
            <h2>Section title</h2>
            <div class="table-responsive">
                <table class="table table-striped table-sm">
                    <thead>
                    <tr>
                        <th>#</th>
                        <th>Header</th>
                        <th>Header</th>
                        <th>Header</th>
                        <th>Header</th>
                    </tr>
                    </thead>
                    <tbody>
                    <tr>
                        <td>1,001</td>
                        <td>Lorem</td>
                        <td>ipsum</td>
                        <td>dolor</td>
                        <td>sit</td>
                    </tr>
                    <tr>
                        <td>1,002</td>
                        <td>amet</td>
                        <td>consectetur</td>
                        <td>adipiscing</td>
                        <td>elit</td>
                    </tr>
                    <tr>
                        <td>1,003</td>
                        <td>Integer</td>
                        <td>nec</td>
                        <td>odio</td>
                        <td>Praesent</td>
                    </tr>
                    <tr>
                        <td>1,003</td>
                        <td>libero</td>
                        <td>Sed</td>
                        <td>cursus</td>
                        <td>ante</td>
                    </tr>
                    <tr>
                        <td>1,004</td>
                        <td>dapibus</td>
                        <td>diam</td>
                        <td>Sed</td>
                        <td>nisi</td>
                    </tr>
                    <tr>
                        <td>1,005</td>
                        <td>Nulla</td>
                        <td>quis</td>
                        <td>sem</td>
                        <td>at</td>
                    </tr>
                    <tr>
                        <td>1,006</td>
                        <td>nibh</td>
                        <td>elementum</td>
                        <td>imperdiet</td>
                        <td>Duis</td>
                    </tr>
                    <tr>
                        <td>1,007</td>
                        <td>sagittis</td>
                        <td>ipsum</td>
                        <td>Praesent</td>
                        <td>mauris</td>
                    </tr>
                    <tr>
                        <td>1,008</td>
                        <td>Fusce</td>
                        <td>nec</td>
                        <td>tellus</td>
                        <td>sed</td>
                    </tr>
                    <tr>
                        <td>1,009</td>
                        <td>augue</td>
                        <td>semper</td>
                        <td>porta</td>
                        <td>Mauris</td>
                    </tr>
                    <tr>
                        <td>1,010</td>
                        <td>massa</td>
                        <td>Vestibulum</td>
                        <td>lacinia</td>
                        <td>arcu</td>
                    </tr>
                    <tr>
                        <td>1,011</td>
                        <td>eget</td>
                        <td>nulla</td>
                        <td>Class</td>
                        <td>aptent</td>
                    </tr>
                    <tr>
                        <td>1,012</td>
                        <td>taciti</td>
                        <td>sociosqu</td>
                        <td>ad</td>
                        <td>litora</td>
                    </tr>
                    <tr>
                        <td>1,013</td>
                        <td>torquent</td>
                        <td>per</td>
                        <td>conubia</td>
                        <td>nostra</td>
                    </tr>
                    <tr>
                        <td>1,014</td>
                        <td>per</td>
                        <td>inceptos</td>
                        <td>himenaeos</td>
                        <td>Curabitur</td>
                    </tr>
                    <tr>
                        <td>1,015</td>
                        <td>sodales</td>
                        <td>ligula</td>
                        <td>in</td>
                        <td>libero</td>
                    </tr>
                    </tbody>
                </table>
            </div>
        </main>
    </div>
</div>

<!-- Bootstrap core JavaScript
================================================== -->
<!-- Placed at the end of the document so the pages load faster -->
<script type="text/javascript" src="../../static/asserts/js/jquery-3.2.1.slim.min.js"></script>
<script type="text/javascript" src="../../static/asserts/js/popper.min.js"></script>
<script type="text/javascript" src="../../static/asserts/js/bootstrap.min.js"></script>

<!-- Icons -->
<script type="text/javascript" src="../../static/asserts/js/feather.min.js"></script>
<script>
    feather.replace()
</script>

<!-- Graphs -->
<script type="text/javascript" src="../../static/asserts/js/Chart.min.js"></script>
<script>
    var ctx = document.getElementById("myChart");
    var myChart = new Chart(ctx, {
        type: 'line',
        data: {
            labels: ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"],
            datasets: [{
                data: [15339, 21345, 18483, 24003, 23489, 24092, 12034],
                lineTension: 0,
                backgroundColor: 'transparent',
                borderColor: '#007bff',
                borderWidth: 4,
                pointBackgroundColor: '#007bff'
            }]
        },
        options: {
            scales: {
                yAxes: [{
                    ticks: {
                        beginAtZero: false
                    }
                }]
            },
            legend: {
                display: false,
            }
        }
    });
</script>

</body>

</html>
View Code

（3）把员工管理处的<li>标签修改成如下，超链接处修改成 　　th:href="@{/emps}"

                            <li class="nav-item">
                                <a class="nav-link" th:href="@{/emps}">
                                    <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-users">
                                        <path d="M17 21v-2a4 4 0 0 0-4-4H5a4 4 0 0 0-4 4v2"></path>
                                        <circle cx="9" cy="7" r="4"></circle>
                                        <path d="M23 21v-2a4 4 0 0 0-3-3.87"></path>
                                        <path d="M16 3.13a4 4 0 0 1 0 7.75"></path>
                                    </svg>
                                    员工管理
                                </a>
                            </li>

（4）在controller层中添加一个EmployeeController.java，用来处理与员工相关的请求（src/main/java/com/azuma/springboot/controller/EmployeeController.java）

@Controller
public class EmployeeController {
    @Autowired
    EmployeeDao employeeDao;

    //查询所有员工返回列表页面
    @GetMapping("/emps")
    public String  list(Model model){
        Collection<Employee> employees = employeeDao.getAll();

        //放在请求域中
        model.addAttribute("emps",employees);
        // thymeleaf默认就会拼串
        // classpath:/templates/xxxx.html
        return "emp/list";
    }
}

4.主页面中公共页面的抽取

抽取公共片段
<div th:fragment="copy">
&copy; 2011 The Good Thymes Virtual Grocery
</div>

引入公共片段
<div th:insert="~{footer :: copy}"></div>
~{templatename::selector}：模板名::选择器
~{templatename::fragmentname}:模板名::片段名

默认效果：
insert的公共片段在div标签中
如果使用th:insert等属性进行引入，可以不用写~{}：
行内写法可以加上：[[~{}]];[(~{})]；

（1）首先完成src/main/resources/templates/dashboard.html中头部的抽取，div中添加 th:fragment="copy"

<nav class="navbar navbar-dark sticky-top bg-dark flex-md-nowrap p-0" th:fragment="topbar"> <!--th:fragment="topbar"中的名字任意起-->
    <a class="navbar-brand col-sm-3 col-md-2 mr-0" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">Company name</a>
    <input class="form-control form-control-dark w-100" type="text" placeholder="Search" aria-label="Search">
    <ul class="navbar-nav px-3">
        <li class="nav-item text-nowrap">
            <a class="nav-link" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">Sign out</a>
        </li>
    </ul>
</nav>

（2）删除list.html中重复的与上面（1）中重复的头部代码，并引入公共topbar

<!--引入抽取的topbar-->
<!--模板名：会使用thymeleaf的前后缀配置规则进行解析-->
<div th:replace="dashboard::topbar"></div>

（3）ps1.注意，list.html中的员工列表英文同样改成中文，要不然进入list.html中员工列表标题还是会显示英文

　　  ps2.要想左上角的Company name显示用户的登录名称，需要在共同头部中把

<a class="navbar-brand col-sm-3 col-md-2 mr-0" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">Company name</a>

修改成：

<a class="navbar-brand col-sm-3 col-md-2 mr-0" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">[[${session.loginUser}]]</a>

5.主界面的侧边栏公共页面提取（使用~{templatename::selector}：模板名::选择器 的方法）

（1）src/main/resources/templates/dashboard.html中侧边栏的div中，添加id选择器

<div class="container-fluid">
    <div class="row">
        <nav class="col-md-2 d-none d-md-block bg-light sidebar" id="sidebar"> <!--添加 id="sidebar"，这个就是templatename::selector中的id-->
            <div class="sidebar-sticky">
                <ul class="nav flex-column">
                    <li class="nav-item">
                        <a class="nav-link active" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">
                            <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-home">
                                <path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"></path>
                                <polyline points="9 22 9 12 15 12 15 22"></polyline>
                            </svg>
                            Dashboard <span class="sr-only">(current)</span>
                        </a>

（2）删除list.html中与（1）重复的代码，并引入sidebar

<div th:replace="dashboard::topbar"></div>

<div class="container-fluid">
    <div class="row">
        <!--引入侧边栏-->
        <div th:replace="dashboard::#sidebar"></div>

        <main role="main" class="col-md-9 ml-sm-auto col-lg-10 pt-3 px-4">

（3）启动服务器进行测试，可以看到侧边栏正常显示

6.点击左侧员工列表的标题高亮显示功能的实现

（1）新建一个文件夹，并创建一个公共bar的HTML（src/main/resources/templates/commons/bar.html）不要忘记引入xmlns:th="http://www.thymeleaf.org" 了

公共头部 topbar

<!--topbar-->
<nav class="navbar navbar-dark sticky-top bg-dark flex-md-nowrap p-0" th:fragment="topbar">
    <a class="navbar-brand col-sm-3 col-md-2 mr-0" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">[[${session.loginUser}]]</a>
    <input class="form-control form-control-dark w-100" type="text" placeholder="Search" aria-label="Search">
    <ul class="navbar-nav px-3">
        <li class="nav-item text-nowrap">
            <a class="nav-link" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">Sign out</a>
        </li>
    </ul>
</nav>

侧边栏 sidebar

<!--sidebar-->
<nav class="col-md-2 d-none d-md-block bg-light sidebar" id="sidebar">
    <div class="sidebar-sticky">
        <ul class="nav flex-column">
            <li class="nav-item">
                <a class="nav-link active" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">
                    <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-home">
                        <path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"></path>
                        <polyline points="9 22 9 12 15 12 15 22"></polyline>
                    </svg>
                    Dashboard <span class="sr-only">(current)</span>
                </a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">
                    <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-file">
                        <path d="M13 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V9z"></path>
                        <polyline points="13 2 13 9 20 9"></polyline>
                    </svg>
                    Orders
                </a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">
                    <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-shopping-cart">
                        <circle cx="9" cy="21" r="1"></circle>
                        <circle cx="20" cy="21" r="1"></circle>
                        <path d="M1 1h4l2.68 13.39a2 2 0 0 0 2 1.61h9.72a2 2 0 0 0 2-1.61L23 6H6"></path>
                    </svg>
                    Products
                </a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="#" th:href="@{/emps}"  >
                    <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-users">
                        <path d="M17 21v-2a4 4 0 0 0-4-4H5a4 4 0 0 0-4 4v2"></path>
                        <circle cx="9" cy="7" r="4"></circle>
                        <path d="M23 21v-2a4 4 0 0 0-3-3.87"></path>
                        <path d="M16 3.13a4 4 0 0 1 0 7.75"></path>
                    </svg>
                    员工管理
                </a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">
                    <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-bar-chart-2">
                        <line x1="18" y1="20" x2="18" y2="10"></line>
                        <line x1="12" y1="20" x2="12" y2="4"></line>
                        <line x1="6" y1="20" x2="6" y2="14"></line>
                    </svg>
                    Reports
                </a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">
                    <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-layers">
                        <polygon points="12 2 2 7 12 12 22 7 12 2"></polygon>
                        <polyline points="2 17 12 22 22 17"></polyline>
                        <polyline points="2 12 12 17 22 12"></polyline>
                    </svg>
                    Integrations
                </a>
            </li>
        </ul>

        <h6 class="sidebar-heading d-flex justify-content-between align-items-center px-3 mt-4 mb-1 text-muted">
            <span>Saved reports</span>
            <a class="d-flex align-items-center text-muted" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">
                <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-plus-circle"><circle cx="12" cy="12" r="10"></circle><line x1="12" y1="8" x2="12" y2="16"></line><line x1="8" y1="12" x2="16" y2="12"></line></svg>
            </a>
        </h6>
        <ul class="nav flex-column mb-2">
            <li class="nav-item">
                <a class="nav-link" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">
                    <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-file-text">
                        <path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"></path>
                        <polyline points="14 2 14 8 20 8"></polyline>
                        <line x1="16" y1="13" x2="8" y2="13"></line>
                        <line x1="16" y1="17" x2="8" y2="17"></line>
                        <polyline points="10 9 9 9 8 9"></polyline>
                    </svg>
                    Current month
                </a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">
                    <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-file-text">
                        <path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"></path>
                        <polyline points="14 2 14 8 20 8"></polyline>
                        <line x1="16" y1="13" x2="8" y2="13"></line>
                        <line x1="16" y1="17" x2="8" y2="17"></line>
                        <polyline points="10 9 9 9 8 9"></polyline>
                    </svg>
                    Last quarter
                </a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">
                    <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-file-text">
                        <path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"></path>
                        <polyline points="14 2 14 8 20 8"></polyline>
                        <line x1="16" y1="13" x2="8" y2="13"></line>
                        <line x1="16" y1="17" x2="8" y2="17"></line>
                        <polyline points="10 9 9 9 8 9"></polyline>
                    </svg>
                    Social engagement
                </a>
            </li>
            <li class="nav-item">
                <a class="nav-link" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">
                    <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-file-text">
                        <path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z"></path>
                        <polyline points="14 2 14 8 20 8"></polyline>
                        <line x1="16" y1="13" x2="8" y2="13"></line>
                        <line x1="16" y1="17" x2="8" y2="17"></line>
                        <polyline points="10 9 9 9 8 9"></polyline>
                    </svg>
                    Year-end sale
                </a>
            </li>
        </ul>
    </div>
</nav>
View Code

（2）在src/main/resources/templates/dashboard.html和src/main/resources/templates/emp/list.html都引入topbar和sidebar（两个页面引入的代码是一样的，故此处只写一个）

<!--引入抽取的topbar-->
<!--模板名：会使用thymeleaf的前后缀配置规则进行解析-->
<div th:replace="commons/bar::topbar"></div>
<div class="container-fluid">
    <div class="row">
        <!--引入侧边栏-->
        <div th:replace="commons/bar::#sidebar"></div>

        <main role="main" class="col-md-9 ml-sm-auto col-lg-10 pt-3 px-4">

（3）启动服务器进行测试，可以看到页面正常显示

（4）回到编译器，修改bar.html中的代码，添加相关判断（此时activeUri会报错，不用管）

员工管理处添加activeUri

            <li class="nav-item">
                <a class="nav-link active" href="#" th:href="@{/emps}"
                   th:class="${activeUri=='emps'?'nav-link active':'nav-link'}">
                    <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-users">
                        <path d="M17 21v-2a4 4 0 0 0-4-4H5a4 4 0 0 0-4 4v2"></path>
                        <circle cx="9" cy="7" r="4"></circle>
                        <path d="M23 21v-2a4 4 0 0 0-3-3.87"></path>
                        <path d="M16 3.13a4 4 0 0 1 0 7.75"></path>
                    </svg>
                    员工管理
                </a>
            </li>
Dashboard处添加activeUri
            <li class="nav-item">
                <a class="nav-link active"
                   th:class="${activeUri=='main.html'?'nav-link active':'nav-link'}"
                   href="#" th:href="@{/main.html}">
                    <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-home">
                        <path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"></path>
                        <polyline points="9 22 9 12 15 12 15 22"></polyline>
                    </svg>
                    Dashboard <span class="sr-only">(current)</span>
                </a>
            </li>

（5）在在src/main/resources/templates/dashboard.html和src/main/resources/templates/emp/list.html引入sidebar的地方修改

dashboard

                <!--引入sidebar-->
                <div th:replace="commons/bar::#sidebar(activeUri='main.html')"></div>

list

                <!--引入侧边栏-->
                <div th:replace="commons/bar::#sidebar(activeUri='emps')"></div>

（6）启动服务器进行测试，可以看到点击员工列表有高亮显示了

7.在list.html中添加循环语句输出员工列表

（1）table中添加循环语句

                <table class="table table-striped table-sm">
                    <thead>
                    <tr>
                        <th>#</th>
                        <th>lastName</th>
                        <th>email</th>
                        <th>gender</th>
                        <th>department</th>
                        <th>birth</th>
                    </tr>
                    </thead>
                    <tbody>
                    <tr th:each="emp:${emps}">
                        <td th:text="${emp.id}"></td>
                        <td>[[${emp.lastName}]]</td>
                        <td th:text="${emp.email}"></td>
                        <td th:text="${emp.gender}==0?'女':'男'"></td>
                        <td th:text="${emp.department.departmentName}"></td>
                        <td th:text="${emp.birth}"></td>

                    </tr>
                    </tbody>
                </table>

（2）启动服务器可以看到员工列表出的信息可以显示出来了，只是日期格式有问题，接下来修改日期格式（把原来的替换成下面这样子的格式）

<td th:text="${#dates.format(emp.birth, 'yyyy-MM-dd HH:mm')}"></td>

（3）添加操作按钮（如下的<th>操作</th>的编辑和删除按钮），最终变成以下的样子

                        <table class="table table-striped table-sm">
                            <thead>
                                <tr>
                                    <th>#</th>
                                    <th>lastName</th>
                                    <th>email</th>
                                    <th>gender</th>
                                    <th>department</th>
                                    <th>birth</th>
                                    <th>操作</th>
                                </tr>
                            </thead>
                            <tbody>
                                <tr th:each="emp:${emps}">
                                    <td th:text="${emp.id}"></td>
                                    <td>[[${emp.lastName}]]</td>
                                    <td th:text="${emp.email}"></td>
                                    <td th:text="${emp.gender}==0?'女':'男'"></td>
                                    <td th:text="${emp.department.departmentName}"></td>
                                    <td th:text="${#dates.format(emp.birth, 'yyyy-MM-dd HH:mm')}"></td>
                                    <td>
                                        <a class="btn btn-sm btn-primary" th:href="@{/emp/}+${emp.id}">编辑</a>
                                        <button th:attr="del_uri=@{/emp/}+${emp.id}" class="btn btn-sm btn-danger deleteBtn">删除</button>
                                    </td>
                                </tr>
                            </tbody>
                        </table>

（4）员工列表查看功能已编辑完成，接下来是员工添加功能

原文地址：https://www.cnblogs.com/AzumaRinne/p/12730342.html

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