学习笔记——spring boot实现用户登录后员工列表添加功能

1.实现员工添加功能

（1）在list.html中的main中添加一个员工添加按钮，实现跳转到员工添加界面（th:href="@{/emp}"对应后台的@GetMapping("/emp")）

            <main role="main" class="col-md-9 ml-sm-auto col-lg-10 pt-3 px-4">
                                    <!-- 此处添加按钮 -->
                    <h2><a class="btn btn-sm btn-success" href="emp" th:href="@{/emp}">员工添加</a></h2>
                    <div class="table-responsive">
                        <table class="table table-striped table-sm">
                            <thead>
                                <tr>
                                    <th>#</th>
                                    <th>lastName</th>

（2）在src/main/resources/templates/emp中新增一个add.html

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

<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>
<!--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(activeUri='emps')"></div>

        <main role="main" class="col-md-9 ml-sm-auto col-lg-10 pt-3 px-4">
                <form>
                    <div class="form-group">
                        <label>LastName</label>
                        <input type="text" class="form-control" placeholder="zhangsan">
                    </div>
                    <div class="form-group">
                        <label>Email</label>
                        <input type="email" class="form-control" placeholder="[email protected]">
                    </div>
                    <div class="form-group">
                        <label>Gender</label><br/>
                        <div class="form-check form-check-inline">
                            <input class="form-check-input" type="radio" name="gender"  value="1">
                            <label class="form-check-label">男</label>
                        </div>
                        <div class="form-check form-check-inline">
                            <input class="form-check-input" type="radio" name="gender"  value="0">
                            <label class="form-check-label">女</label>
                        </div>
                    </div>
                    <div class="form-group">
                        <label>department</label>
                        <select class="form-control">
                            <option>1</option>
                            <option>2</option>
                            <option>3</option>
                            <option>4</option>
                            <option>5</option>
                        </select>
                    </div>
                    <div class="form-group">
                        <label>Birth</label>
                        <input type="text" class="form-control" placeholder="zhangsan">
                    </div>
                    <button type="submit" class="btn btn-primary">添加</button>
                </form>
            </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）在src/main/java/com/azuma/springboot/controller/EmployeeController.java中来到员工添加页面的方法toAddPage（注意，添加方法前先注入Dao）

   //先在开头注入departmentDao
    @Autowired
    DepartmentDao departmentDao;

然后添加toAddPage方法

    //来到员工添加页面
    @GetMapping("/emp")
    public String toAddPage(Model model){
        //来到添加页面,查出所有的部门，在页面显示
        Collection<Department> departments = departmentDao.getDepartments();
        model.addAttribute("depts",departments);
        return "emp/add";
    }

（4）上面可知，用户的部门信息被添加到了depts中，返回add.html页面，修改相关的代码

                    <div class="form-group">
                        <label>department</label>
                        <!--提交的是部门的id-->
                        <select class="form-control" name="department.id">
                            <option th:selected="${dept.id}"  th:each="dept:${depts}" th:text="${dept.departmentName}">1</option>
                        </select>
                    </div>

（5）重启服务器进行测试可以看到部门已经可以进行选择了

2.补充添加界面，用户点击添加按钮可以发送POST请求

（1）add.html中的form表单中添加action请求

<form th:action="@{/emp}" method="post">

（2）在src/main/java/com/azuma/springboot/controller/EmployeeController.java中书写添加员工的addEmp方法

    //员工添加
    //SpringMVC自动将请求参数和入参对象的属性进行一一绑定；要求请求参数的名字和javaBean入参的对象里面的属性名是一样的
    @PostMapping("/emp")
    public String addEmp(Employee employee){
        //来到员工列表页面

        System.out.println("保存的员工信息："+employee);
        //保存员工
        employeeDao.save(employee);
        // redirect: 表示重定向到一个地址  /代表当前项目路径
        // forward: 表示转发到一个地址
        return "redirect:/emps";
    }

（3）继续修改add.html中的请求参数的名字，使其与javaBean入参的对象里面的属性名是一样的

            <form th:action="@{/emp}" method="post">
                    <div class="form-group">
                        <label>LastName</label>
                        <!--此处添加 name="lastName"，下面其它地方也是一样-->
                        <input name="lastName" type="text" class="form-control" placeholder="zhangsan">
                    </div>
                    <div class="form-group">
                        <label>Email</label>
                        <input name="email" type="email" class="form-control" placeholder="[email protected]">
                    </div>
                    <div class="form-group">
                        <label>Gender</label><br/>
                        <div class="form-check form-check-inline">
                            <input class="form-check-input" type="radio" name="gender"  value="1">
                            <label class="form-check-label">男</label>
                        </div>
                        <div class="form-check form-check-inline">
                            <input class="form-check-input" type="radio" name="gender"  value="0">
                            <label class="form-check-label">女</label>
                        </div>
                    </div>
                    <div class="form-group">
                        <label>department</label>
                        <!--提交的是部门的id-->
                        <select class="form-control" name="department.id">
                            <option th:value="${dept.id}" th:each="dept:${depts}" th:text="${dept.departmentName}">1</option>
                        </select>
                    </div>
                    <div class="form-group">
                        <label>Birth</label>
                        <input name="birth" type="text" class="form-control" placeholder="zhangsan" >
                    </div>
                    <button type="submit" class="btn btn-primary">添加</button>
                </form>

注意：（此时提交会出现400错误，因为日期格式不正确）

提交的数据格式不对：生日：日期；

2017-12-12；2017/12/12；2017.12.12；

日期的格式化；SpringMVC将页面提交的值需要转换为指定的类型;

2017-12-12---Date； 类型转换，格式化;

默认日期是按照/的方式；

（4）在src/main/resources/application.properties中配置日期格式

spring.mvc.date-format=yyyy-MM-dd

（5）重启服务器进行测试提交，按照此格式提交即可

PS.如果日期还是有问题的话，看看src/main/resources/templates/emp/list.html中的生日那项是不是<td th:text="${#dates.format(emp.birth, 'yyyy-MM-dd HH:mm')}"></td>（因为这个是后面才用到的功能），建议修改成<td th:text="${emp.birth}"></td>看看

学习笔记——spring boot实现用户登录后员工列表添加功能

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