2021年了还有做某某管理系统的？springboot整合mysql快速搭建XX管理系统

XX管理系统

摘要
1 技术选型
- 1.1 Mysql8
1.2 springboot2
1.3 模板引擎thymeleaf
2 项目构建
- 2.1 创建项目
- 2.2 建表
3 项目实现
- 3.1 项目效果
- 3.2 项目结构
4 代码实现
- 4.1 前台页面
- 4.2 后台业务实现
- - 4.2.1 实体类Employee
  - 4.2.2 数据库操作层repo
  - 4.2.3 业务代码service
  - 4.2.4 Web接口
- 4.3 配置文件
5 总结

摘要

对企业来说，人、物资、能源、资金、信息是5大重要资源。人、物资、能源、资金这些都是可见的有形资源，而信息是一种无形的资源。以前人们比较看重有形的资源，进入信息社会和知识经济时代以后，信息资源就显得日益重要。因为信息资源决定了如何更有效地利用物资资源。信息资源是人类与自然的斗争中得出的知识结晶，掌握了信息资源，就可以更好地利用有形资源，使有形资源发挥更好的效益。 ¹

由此可见，诸如各类管理系统还是很有价值的，笔者经历的公司内部都有自己实现的管理系统，可能有些非互联网的公司是依靠其他公司提供的信息管理服务，ERP系统至今还发挥着重要作用，笔者下班后连忙带赶，经历数个小时的鏖战，终于做完了此xx管理系统，在此与诸位分享。

1 技术选型

1.1 Mysql8

为什么是mysql8，不是5版本的。没错就是喜新厌旧啦！！！
       mysql8有何特别之处呢！
       1.性能就是好，没错它就是强，所以当然上Mysql8，快点上8。

       2.Mysql8还支持各种牛逼的功能：SQL窗口函数，GIS，JSON扩展语法等等。总之这些功能听着就挺牛，由于笔者自己还没弄明白，就不赘述了。

1.2 springboot2

当前主流的web开发框架，不二之选，没有比这更方便的了，为什么选这个，它就是无敌，没有竞争对手啊。自动装配，父级依赖，嵌入tomcat等等，就是无敌呀。

1.3 模板引擎thymeleaf

用模板引擎也实属无奈，笔者不会前端呀，毕竟人的精力是有限的。不过这个东西还是挺好用的，赶脚用着和几年前学写jsp也差不多。

2 项目构建

2.1 创建项目

spring initializer

取个心爱的项目名字

勾选需要的依赖，mysql，thymeleaf，jpa

2.2 建表

好吧，笔者为了偷懒，没有建表ddl，直接上jpa，先建一个需要的库，create database。做完这些，项目开始的准备工作就已经完了，马上又带了激动人心的撸代码环节了。

3 项目实现

3.1 项目效果

主页面

就是这样滴，如此就已然发挥了笔者百分之两百的前端功力了，各种查阅资料，复制copy加代码修改，修修改改终于有了上边的模样，应该不算太丑吧！好吧，我承认了。

3.2 项目结构

和主流web开发项目的结构基本大同小异：
对应数据库实体的entity包，对应数据库操作的repo目录，对应业务代码的service目录，对应restful api的controller目录。

4 代码实现

4.1 前台页面

首页面，就是上边看到的那个帅气的首页！

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head><link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"><meta charset="UTF-8"><title>xx-manager</title>
</head>
<body>
<header th:replace="xx-header.html"></header>
<div class="container my-2"><a th:href="@{/newEmployee}" class="btn btn-primary btn-sm mb-3"> 新增 </a><table border="1" class = "table table-striped table-responsive-md"><thead><tr><th>姓名</th><th>邮箱</th><th>电话</th><th>地址</th><th>操作</th></tr></thead><tbody><tr th:each="employee : ${employees}"><td th:text="${employee.name}"></td><td th:text="${employee.email}"></td><td th:text="${employee.mobile}"></td><td th:text="${employee.location}"></td><td><a th:href="@{/updateEmployee/{id}(id=${employee.id})}" class="btn btn-primary">修改</a><a th:href="@{/deleteEmployee/{id}(id=${employee.id})}" class="btn btn-danger">删除</a></td></tr></tbody></table><div th:if="${totalPages > 1}"><div class="row col-sm-10"><div class="col-sm-2">总人数: [[${items}]]</div><div class="col-sm-1"><span th:each="i: ${#numbers.sequence(1, totalPages)}"><a th:if="${currentPage != i}" th:href="@{'/page/' + ${i}}">[[${i}]]</a><span th:unless="${currentPage != i}">[[${i}]]</span> &nbsp; &nbsp;</span></div><div class="col-sm-1"><a th:if="${currentPage < totalPages}" th:href="@{'/page/' + ${currentPage + 1}}">下一页</a><span th:unless="${currentPage < totalPages}">下一页</span></div><div class="col-sm-1"><a th:if="${currentPage < totalPages}" th:href="@{'/page/' + ${totalPages}}">尾页</a><span th:unless="${currentPage < totalPages}">尾页</span></div></div></div>
</div>
<footer th:replace="footer.html"></footer>
</body>
</html>

新增功能页面

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head><link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"><meta charset="UTF-8"><title>xx-manager</title>
</head>
<body>
<header th:replace="xx-header.html"></header>
<div class="container"><h1>xx-manager</h1><hr><h2>保存</h2><form action="#" th:action="@{/saveEmployee}" th:object="${employee}" method="POST"><input type="text" th:field="*{name}" placeholder="姓名" class="form-control mb-4 col-4"><input type="text" th:field="*{email}" placeholder="邮箱" class="form-control mb-4 col-4"><input type="text" th:field="*{mobile}" placeholder="电话" class="form-control mb-4 col-4"><input type="text" th:field="*{location}" placeholder="住址" class="form-control mb-4 col-4"><button type="submit" class="btn btn-info col-2">保存</button></form><hr><a th:href="@{/}">回退</a>
</div>
<footer th:replace="footer.html"></footer>
</body>
</html>

修改功能页面

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head><link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"><meta charset="UTF-8"><title>xx-manager</title>
</head>
<body>
<header th:replace="xx-header.html"></header>
<div class="container"><h1>xx-manager</h1><hr><h2>更新</h2><form action="#" th:action="@{/saveEmployee}" th:object="${employee}" method="POST"><input type="hidden" th:field="*{id}" /><input type="text" th:field="*{name}" class="form-control mb-4 col-4"><input type="text" th:field="*{email}" class="form-control mb-4 col-4"><input type="text" th:field="*{mobile}" class="form-control mb-4 col-4"><input type="text" th:field="*{location}" class="form-control mb-4 col-4"><button type="submit" class="btn btn-info col-2">修改</button></form><hr><a th:href="@{/}">回退</a>
</div>
<footer th:replace="footer.html"></footer>
</body>
</html>

4.2 后台业务实现

4.2.1 实体类Employee

对应数据库中的表

package com.lbh.xxmanager.entity;import javax.persistence.*;/*** Copyright(c)lbhbinhao@163.com* @author liubinhao* @date 2021/1/7* ++++ ______                           ______             ______* +++/     /|                         /     /|           /     /|* +/_____/  |                       /_____/  |         /_____/  |* |     |   |                      |     |   |        |     |   |* |     |   |                      |     |   |________|     |   |* |     |   |                      |     |  /         |     |   |* |     |   |                      |     |/___________|     |   |* |     |   |___________________   |     |____________|     |   |* |     |  /                  / |  |     |   |        |     |   |* |     |/ _________________/  /   |     |  /         |     |  /* |_________________________|/b    |_____|/           |_____|/*/
@Entity
@Table(name = "xx_employee")
public class Employee {@Id@GeneratedValue(strategy = GenerationType.IDENTITY)private long id;@Column(name = "name")private String name;@Column(name = "email")private String email;@Column(name = "mobile")private String mobile;@Column(name = "location")private String location;@Column(name="status")private int status;public long getId() {return id;}public void setId(long id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getEmail() {return email;}public void setEmail(String email) {this.email = email;}public String getMobile() {return mobile;}public void setMobile(String mobile) {this.mobile = mobile;}public String getLocation() {return location;}public void setLocation(String location) {this.location = location;}public int getStatus() {return status;}public void setStatus(int status) {this.status = status;}
}

4.2.2 数据库操作层repo

package com.lbh.xxmanager.repo;import com.lbh.xxmanager.entity.Employee;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;import java.util.List;/*** Copyright(c)lbhbinhao@163.com* @author liubinhao* @date 2021/1/7* ++++ ______                           ______             ______* +++/     /|                         /     /|           /     /|* +/_____/  |                       /_____/  |         /_____/  |* |     |   |                      |     |   |        |     |   |* |     |   |                      |     |   |________|     |   |* |     |   |                      |     |  /         |     |   |* |     |   |                      |     |/___________|     |   |* |     |   |___________________   |     |____________|     |   |* |     |  /                  / |  |     |   |        |     |   |* |     |/ _________________/  /   |     |  /         |     |  /* |_________________________|/b    |_____|/           |_____|/*/
@Repository
public interface EmployeeRepository extends JpaRepository<Employee,Long> {List<Employee> findAllByStatus(int status);Page<Employee> findAllByStatus(int status, Pageable pageable);Page<Employee> findAllByStatusAndLocationLikeOrNameLikeOrEmailLike(int status,String locaion,String name,String email, Pageable pageable);}

4.2.3 业务代码service

接口：

package com.lbh.xxmanager.service;import com.lbh.xxmanager.entity.Employee;
import org.springframework.data.domain.Page;import java.util.List;/*** Copyright(c)lbhbinhao@163.com* @author liubinhao* @date 2021/1/7* ++++ ______                           ______             ______* +++/     /|                         /     /|           /     /|* +/_____/  |                       /_____/  |         /_____/  |* |     |   |                      |     |   |        |     |   |* |     |   |                      |     |   |________|     |   |* |     |   |                      |     |  /         |     |   |* |     |   |                      |     |/___________|     |   |* |     |   |___________________   |     |____________|     |   |* |     |  /                  / |  |     |   |        |     |   |* |     |/ _________________/  /   |     |  /         |     |  /* |_________________________|/b    |_____|/           |_____|/*/
public interface EmployeeService {List<Employee> findAllEmployees();void saveEmployee(Employee employee);Employee getEmployeeById(long id);void deleteEmployeeById(long id);Page<Employee> findPaging(int no,int size);Page<Employee> findPaging(int no,int size,String searchKey);
}

业务实现类：

package com.lbh.xxmanager.service;import com.lbh.xxmanager.entity.Employee;
import com.lbh.xxmanager.repo.EmployeeRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.stereotype.Service;import java.util.List;
import java.util.Optional;/*** Copyright(c)lbhbinhao@163.com** @author liubinhao* @date 2021/1/7* ++++ ______                           ______             ______* +++/     /|                         /     /|           /     /|* +/_____/  |                       /_____/  |         /_____/  |* |     |   |                      |     |   |        |     |   |* |     |   |                      |     |   |________|     |   |* |     |   |                      |     |  /         |     |   |* |     |   |                      |     |/___________|     |   |* |     |   |___________________   |     |____________|     |   |* |     |  /                  / |  |     |   |        |     |   |* |     |/ _________________/  /   |     |  /         |     |  /* |_________________________|/b    |_____|/           |_____|/*/
@Service
public class EmployeeServiceImpl implements EmployeeService {@Autowiredprivate EmployeeRepository employeeRepository;@Overridepublic List<Employee> findAllEmployees() {return employeeRepository.findAllByStatus(0);}@Overridepublic void saveEmployee(Employee employee) {employee.setStatus(0);employeeRepository.save(employee);}@Overridepublic Employee getEmployeeById(long id) {Optional<Employee> byId = employeeRepository.findById(id);Employee employee = null;if (byId.isPresent()){employee = byId.get();}else {throw new RuntimeException("该id员工不存在!");}return employee;}@Overridepublic void deleteEmployeeById(long id) {Employee employeeById = getEmployeeById(id);employeeById.setStatus(1);employeeRepository.save(employeeById);}@Overridepublic Page<Employee> findPaging(int no, int size) {Pageable pageable = PageRequest.of(no - 1,size);return employeeRepository.findAllByStatus(0,pageable);}@Overridepublic Page<Employee> findPaging(int no, int size, String searchKey) {String key = "%"+searchKey+"%";Pageable pageable = PageRequest.of(no - 1,size);return employeeRepository.findAllByStatusAndLocationLikeOrNameLikeOrEmailLike(0,key,key,key,pageable);}
}

4.2.4 Web接口

package com.lbh.xxmanager.controller;import com.lbh.xxmanager.entity.Employee;
import com.lbh.xxmanager.service.EmployeeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;
import org.thymeleaf.util.StringUtils;import java.util.List;/*** Copyright(c)lbhbinhao@163.com* @author liubinhao* @date 2021/1/7* ++++ ______                           ______             ______* +++/     /|                         /     /|           /     /|* +/_____/  |                       /_____/  |         /_____/  |* |     |   |                      |     |   |        |     |   |* |     |   |                      |     |   |________|     |   |* |     |   |                      |     |  /         |     |   |* |     |   |                      |     |/___________|     |   |* |     |   |___________________   |     |____________|     |   |* |     |  /                  / |  |     |   |        |     |   |* |     |/ _________________/  /   |     |  /         |     |  /* |_________________________|/b    |_____|/           |_____|/*/
@Controller
public class EmployeeController {@Autowiredprivate EmployeeService employeeService;@GetMapping("/")public String index(Model model){model.addAttribute("employees",employeeService.findAllEmployees());return "redirect:/page/1";}@GetMapping("/newEmployee")public String newEmployee(Model model){Employee employee = new Employee();model.addAttribute("employee",employee);return "new_employee";}@PostMapping("/saveEmployee")public String saveEmployee(@ModelAttribute Employee employee){employeeService.saveEmployee(employee);return "redirect:/";}@GetMapping("/updateEmployee/{id}")public String updateEmployee(@PathVariable Long id,Model model){Employee employeeById = employeeService.getEmployeeById(id);model.addAttribute("employee",employeeById);return "update_employee";}@GetMapping("/deleteEmployee/{id}")public String deleteEmployee(@PathVariable Long id){employeeService.deleteEmployeeById(id);return "redirect:/";}@GetMapping("/page/{pageNo}")public String findPaging(@PathVariable int pageNo, @RequestParam(required = false) String key, Model model){Page<Employee> paging = null;if (StringUtils.isEmpty(key)) {paging = employeeService.findPaging(pageNo, 5);}else{paging = employeeService.findPaging(pageNo, 5,key);}List<Employee> content = paging.getContent();model.addAttribute("currentPage",pageNo);model.addAttribute("totalPages",paging.getTotalPages());model.addAttribute("items",paging.getTotalElements());model.addAttribute("employees",content);return "index";}
}

4.3 配置文件

springboot的配置文件

server.port=9001
spring.datasource.username=root
spring.datasource.password=你的数据库密码
spring.datasource.url=jdbc:mysql://localhost:3303/xx-manager?serverTimezone=Asia/Shanghai&zeroDateTimeBehavior=CONVERT_TO_NULL&autoReconnect=true&useSSL=false&failOverReadOnly=falsespring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver# The SQL dialect makes Hibernate generate better SQL for the chosen database
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5InnoDBDialect
# update 这样写可以自动建表，更新表
# Hibernate ddl auto (create, create-drop, validate, update)
spring.jpa.hibernate.ddl-auto=updatelogging.level.org.hibernate.SQL=DEBUG
logging.level.org.hibernate.type=TRACE

5 总结

写一个这样简单的后台信息管理还是不难，看来笔者还是宝刀未老。下班回家开始做，不过写博客是真滴难，都过了12点还没有写完，写博客和我写代码的时间也相差无几了。哎，我这可怜的头发啊。

百度百科词条.信息管理系统 ↩︎