springboot开发之显示员工信息

接上一节：

暂时就只用Dao和Controller了，没有service层和连接数据库。

目前目录结构：

在entities包中：有Employee.java、Department.java

Employee.java

package com.gong.springbootcurd.entities;

import java.util.Date;

public class Employee {

    private Integer id;
    private String lastName;

    private String email;
    //1 male, 0 female
    private Integer gender;
    private Department department;
    private Date birth;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public Integer getGender() {
        return gender;
    }

    public void setGender(Integer gender) {
        this.gender = gender;
    }

    public Department getDepartment() {
        return department;
    }

    public void setDepartment(Department department) {
        this.department = department;
    }

    public Date getBirth() {
        return birth;
    }

    public void setBirth(Date birth) {
        this.birth = birth;
    }
    public Employee(Integer id, String lastName, String email, Integer gender,
                    Department department) {
        super();
        this.id = id;
        this.lastName = lastName;
        this.email = email;
        this.gender = gender;
        this.department = department;
        this.birth = new Date();
    }

    public Employee() {
    }

    @Override
    public String toString() {
        return "Employee{" +
                "id=" + id +
                ", lastName='" + lastName + ''' +
                ", email='" + email + ''' +
                ", gender=" + gender +
                ", department=" + department +
                ", birth=" + birth +
                '}';
    }
    
    
}

Department.java

package com.gong.springbootcurd.entities;

public class Department {

    private Integer id;
    private String departmentName;

    public Department() {
    }
    
    public Department(int i, String string) {
        this.id = i;
        this.departmentName = string;
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getDepartmentName() {
        return departmentName;
    }

    public void setDepartmentName(String departmentName) {
        this.departmentName = departmentName;
    }

    @Override
    public String toString() {
        return "Department [id=" + id + ", departmentName=" + departmentName + "]";
    }
    
}

EmployeeController.java

package com.gong.springbootcurd.controller;

import com.gong.springbootcurd.dao.DepartmentDao;
import com.gong.springbootcurd.dao.EmployeeDao;
import com.gong.springbootcurd.entities.Department;
import com.gong.springbootcurd.entities.Employee;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;

import java.util.Collection;

@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";
    }
}

EmployeeDao.java

package com.gong.springbootcurd.dao;

import com.gong.springbootcurd.entities.Employee;
import com.gong.springbootcurd.entities.Department;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

@Repository
public class EmployeeDao {

    private static Map<Integer, Employee> employees = null;
    
    @Autowired
    private DepartmentDao departmentDao;
    
    static{
        employees = new HashMap<Integer, Employee>();

        employees.put(1001, new Employee(1001, "E-AA", "aa@163.com", 1, new Department(101, "D-AA")));
        employees.put(1002, new Employee(1002, "E-BB", "bb@163.com", 1, new Department(102, "D-BB")));
        employees.put(1003, new Employee(1003, "E-CC", "cc@163.com", 0, new Department(103, "D-CC")));
        employees.put(1004, new Employee(1004, "E-DD", "dd@163.com", 0, new Department(104, "D-DD")));
        employees.put(1005, new Employee(1005, "E-EE", "ee@163.com", 1, new Department(105, "D-EE")));
    }
    
    private static Integer initId = 1006;
    
    //查询所有员工
    public Collection<Employee> getAll(){
        return employees.values();
    }
}

DepartmentController.java

package com.gong.springbootcurd.controller;

import com.gong.springbootcurd.dao.DepartmentDao;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class DepartmentController {

    @Autowired
    DepartmentDao departmentDao;

    @RequestMapping("/depts")
    public String getAll(){
        return "dept/list";
    }

}

DepartmentDao.java

package com.gong.springbootcurd.dao;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

import com.gong.springbootcurd.entities.Department;
import org.springframework.stereotype.Repository;


@Repository
public class DepartmentDao {

    private static Map<Integer, Department> departments = null;
    
    static{
        departments = new HashMap<Integer, Department>();
        
        departments.put(101, new Department(101, "D-AA"));
        departments.put(102, new Department(102, "D-BB"));
        departments.put(103, new Department(103, "D-CC"));
        departments.put(104, new Department(104, "D-DD"));
        departments.put(105, new Department(105, "D-EE"));
    }
    
    public Collection<Department> getDepartments(){
        return departments.values();
    }
    
    public Department getDepartment(Integer id){
        return departments.get(id);
    }
    
}

bar.html

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<!--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/#">[[${session.loginUser}]]</a>
    <input class="form-control form-control-dark w-100" type="text" placeholder="Search" aria-label="Search">
    <ul class="navbar-nav px-3">
        <li class="nav-item text-nowrap">
            <a class="nav-link" href="http://getbootstrap.com/docs/4.0/examples/dashboard/#">[[${session.loginUser}]]</a>
        </li>
    </ul>
    <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>

<!--sidebar-->
<nav class="col-md-2 d-none d-md-block bg-light sidebar" id="sidebar">
        <ul class="nav flex-column">
            <li class="nav-item">
                <a class="nav-link active" href="#" th:href="@{/emps}"
                   th:class="${activeUri=='emps'?'nav-link active':'nav-link'}">
                    <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-users">
                        <path d="M17 21v-2a4 4 0 0 0-4-4H5a4 4 0 0 0-4 4v2"></path>
                        <circle cx="9" cy="7" r="4"></circle>
                        <path d="M23 21v-2a4 4 0 0 0-3-3.87"></path>
                        <path d="M16 3.13a4 4 0 0 1 0 7.75"></path>
                    </svg>
                    员工管理
                </a>
            </li>
            <li class="nav-item">
                <a class="nav-link active" href="#" th:href="@{/depts}"
                   th:class="${activeUri=='depts'?'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>
                    部门管理
                </a>
            </li>
        </ul>
    </div>
</nav>

</body>
</html>

dashboard.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/4.1.2/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topbar-->
        <div th:replace="commons/bar::topbar"></div>
        <div class="container-fluid">
            <div class="row">
                <!--引入sidebar-->
                <div th:replace="commons/bar::#sidebar(activeUri='main.html')"></div>
                <main role="main" class="col-md-9 ml-sm-auto col-lg-10 pt-3 px-4">
                    <div class="chartjs-size-monitor" style="position: absolute; left: 0px; top: 0px; right: 0px; bottom: 0px; overflow: hidden; pointer-events: none; visibility: hidden; z-index: -1;">
                        <div class="chartjs-size-monitor-expand" style="position:absolute;left:0;top:0;right:0;bottom:0;overflow:hidden;pointer-events:none;visibility:hidden;z-index:-1;">
                            <div style="position:absolute;width:1000000px;height:1000000px;left:0;top:0"></div>
                        </div>
                        <div class="chartjs-size-monitor-shrink" style="position:absolute;left:0;top:0;right:0;bottom:0;overflow:hidden;pointer-events:none;visibility:hidden;z-index:-1;">
                            <div style="position:absolute;width:200%;height:200%;left:0; top:0"></div>
                        </div>
                    </div>
                    <div class="d-flex justify-content-between flex-wrap flex-md-nowrap align-items-center pb-2 mb-3 border-bottom">
                        <h1 class="h2">Dashboard</h1>
                        <div class="btn-toolbar mb-2 mb-md-0">
                            <div class="btn-group mr-2">
                                <button class="btn btn-sm btn-outline-secondary">Share</button>
                                <button class="btn btn-sm btn-outline-secondary">Export</button>
                            </div>
                            <button class="btn btn-sm btn-outline-secondary dropdown-toggle">
                <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-calendar"><rect x="3" y="4" width="18" height="18" rx="2" ry="2"></rect><line x1="16" y1="2" x2="16" y2="6"></line><line x1="8" y1="2" x2="8" y2="6"></line><line x1="3" y1="10" x2="21" y2="10"></line></svg>
                This week
              </button>
                        </div>
                    </div>

                    <canvas class="my-4 chartjs-render-monitor" id="myChart" width="1076" height="454" style="display: block; width: 1076px; height: 454px;"></canvas>

                    
                </main>
            </div>
        </div>

        <!-- Bootstrap core JavaScript
    ================================================== -->
        <!-- Placed at the end of the document so the pages load faster -->
        <script type="text/javascript" src="asserts/js/jquery-3.2.1.slim.min.js" th:src="@{/webjars/jquery/3.3.1/jquery.js}"></script>
        <script type="text/javascript" src="asserts/js/popper.min.js" th:src="@{/webjars/popper.js/1.11.1/dist/popper.js}"></script>
        <script type="text/javascript" src="asserts/js/bootstrap.min.js" th:src="@{/webjars/bootstrap/4.0.0/js/bootstrap.js}"></script>

        <!-- Icons -->
        <script type="text/javascript" src="asserts/js/feather.min.js" th:src="@{/asserts/js/feather.min.js}"></script>
        <script>
            feather.replace()
        </script>

        <!-- Graphs -->
        <script type="text/javascript" src="asserts/js/Chart.min.js" th:src="@{/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>

emp/list.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/4.1.2/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">
                    <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>
                                    <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>
                    </div>
                </main>
                <form id="deleteEmpForm"  method="post">
                    <input type="hidden" name="_method" value="delete"/>
                </form>
            </div>
        </div>

        <!-- Bootstrap core JavaScript
    ================================================== -->
        <!-- Placed at the end of the document so the pages load faster -->
        <script type="text/javascript" src="asserts/js/jquery-3.2.1.slim.min.js" th:src="@{/webjars/jquery/3.3.1/jquery.js}"></script>
        <script type="text/javascript" src="asserts/js/popper.min.js" th:src="@{/webjars/popper.js/1.11.1/dist/popper.js}"></script>
        <script type="text/javascript" src="asserts/js/bootstrap.min.js" th:src="@{/webjars/bootstrap/4.0.0/js/bootstrap.js}"></script>

        <!-- Icons -->
        <script type="text/javascript" src="asserts/js/feather.min.js" th:src="@{/asserts/js/feather.min.js}"></script>
        <script>
            feather.replace()
        </script>
        <script>
            $(".deleteBtn").click(function(){
                //删除当前员工的
                $("#deleteEmpForm").attr("action",$(this).attr("del_uri")).submit();
                return false;
            });
        </script>
    </body>
</html>

dept/list.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/4.1.2/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='depts')"></div>

        <main role="main" class="col-md-9 ml-sm-auto col-lg-10 pt-3 px-4">
            <h1>这是部门信息管理页面</h1>
        </main>
    </div>
</div>

<!-- Bootstrap core JavaScript
================================================== -->
<!-- Placed at the end of the document so the pages load faster -->
<script type="text/javascript" src="asserts/js/jquery-3.2.1.slim.min.js" th:src="@{/webjars/jquery/3.3.1/jquery.js}"></script>
<script type="text/javascript" src="asserts/js/popper.min.js" th:src="@{/webjars/popper.js/1.11.1/dist/popper.js}"></script>
<script type="text/javascript" src="asserts/js/bootstrap.min.js" th:src="@{/webjars/bootstrap/4.0.0/js/bootstrap.js}"></script>

<!-- Icons -->
<script type="text/javascript" src="asserts/js/feather.min.js" th:src="@{/asserts/js/feather.min.js}"></script>
<script>
    feather.replace()
</script>
</body>
</html>

启动服务器：登录之后选择员工管理

选择部门管理：

说明：之前小节进行了许多配置，真正实现起来的员工的增删改查还是跟ssm框架时差不多，问题都不大。需要注意的是前端的一些和视图模板的一些知识。包括提取出共用的模板，点击员工管理或部门管理时，选中哪个，哪个就进行高亮表示（这里使用三元组，也就是上述模板中用橙色加粗所表示的，当activeUri是emps时高亮员工管理，否则是depts时就加亮部门管理）。部门管理只是简单的搭建了页面出来，就不实现了，只是看下切换列表时的效果，由于相关信息比较多，有些代码会遗漏等等，只要明白其中的原理及思想，自己进行改造还是不难的。其中代码有一些是增删改的，暂时可不比理会。

具体流程：点击员工管理，发送post请求的地址为/emps，然后显示相关信息在右边这一块。同理点击部门管理，发送post请求的地址为/depts，然后显示相关信息在右边这一块。