SpringBootWeb case-preparation work

Table of contents

foreword

Preparation

Requirements & Environment Construction

need

Environment build

development specification

Restful development specification

Uniform Response Results

Development Process

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foreword

According to previous articles, I can know that I have finished learning the basic knowledge of front-end, back-end, and database, and then pass a web project case based on SpringBoot project development.

Preparation

Requirements & Environment Construction

need

• department management
  • Query department list
  • delete department
  • new department
  • modify department
• employee management
  • Query employee list (page query, condition query)
  • delete employee
  • new employee
  • modify employee

Environment build

Front-end engineering, back-end engineering , database MySQL

• Prepare database tables (dept, emp)
  • Corresponding SQL statement

  • -- 部门管理
    create table dept
    (
        id          int unsigned primary key auto_increment comment '主键ID',
        name        varchar(10) not null unique comment '部门名称',
        create_time datetime    not null comment '创建时间',
        update_time datetime    not null comment '修改时间'
    ) comment '部门表';
    
    insert into dept (id, name, create_time, update_time)
    values (1, '学工部', now(), now()),
           (2, '教研部', now(), now()),
           (3, '咨询部', now(), now()),
           (4, '就业部', now(), now()),
           (5, '人事部', now(), now());
    
    
    -- 员工管理(带约束)
    create table emp
    (
        id          int unsigned primary key auto_increment comment 'ID',
        username    varchar(20)      not null unique comment '用户名',
        password    varchar(32) default '123456' comment '密码',
        name        varchar(10)      not null comment '姓名',
        gender      tinyint unsigned not null comment '性别, 说明: 1 男, 2 女',
        image       varchar(300) comment '图像',
        job         tinyint unsigned comment '职位, 说明: 1 班主任,2 讲师, 3 学工主管, 4 教研主管, 5 咨询师',
        entrydate   date comment '入职时间',
        dept_id     int unsigned comment '部门ID',
        create_time datetime         not null comment '创建时间',
        update_time datetime         not null comment '修改时间'
    ) comment '员工表';
    
    INSERT INTO emp
    (id, username, password, name, gender, image, job, entrydate, dept_id, create_time, update_time)
    VALUES (1, 'jinyong', '123456', '金庸', 1, '1.jpg', 4, '2000-01-01', 2, now(), now()),
           (2, 'zhangwuji', '123456', '张无忌', 1, '2.jpg', 2, '2015-01-01', 2, now(), now()),
           (3, 'yangxiao', '123456', '杨逍', 1, '3.jpg', 2, '2008-05-01', 2, now(), now()),
           (4, 'weiyixiao', '123456', '韦一笑', 1, '4.jpg', 2, '2007-01-01', 2, now(), now()),
           (5, 'changyuchun', '123456', '常遇春', 1, '5.jpg', 2, '2012-12-05', 2, now(), now()),
           (6, 'xiaozhao', '123456', '小昭', 2, '6.jpg', 3, '2013-09-05', 1, now(), now()),
           (7, 'jixiaofu', '123456', '纪晓芙', 2, '7.jpg', 1, '2005-08-01', 1, now(), now()),
           (8, 'zhouzhiruo', '123456', '周芷若', 2, '8.jpg', 1, '2014-11-09', 1, now(), now()),
           (9, 'dingminjun', '123456', '丁敏君', 2, '9.jpg', 1, '2011-03-11', 1, now(), now()),
           (10, 'zhaomin', '123456', '赵敏', 2, '10.jpg', 1, '2013-09-05', 1, now(), now()),
           (11, 'luzhangke', '123456', '鹿杖客', 1, '11.jpg', 5, '2007-02-01', 3, now(), now()),
           (12, 'hebiweng', '123456', '鹤笔翁', 1, '12.jpg', 5, '2008-08-18', 3, now(), now()),
           (13, 'fangdongbai', '123456', '方东白', 1, '13.jpg', 5, '2012-11-01', 3, now(), now()),
           (14, 'zhangsanfeng', '123456', '张三丰', 1, '14.jpg', 2, '2002-08-01', 2, now(), now()),
           (15, 'yulianzhou', '123456', '俞莲舟', 1, '15.jpg', 2, '2011-05-01', 2, now(), now()),
           (16, 'songyuanqiao', '123456', '宋远桥', 1, '16.jpg', 2, '2007-01-01', 2, now(), now()),
           (17, 'chenyouliang', '123456', '陈友谅', 1, '17.jpg', NULL, '2015-03-21', NULL, now(), now());
    
    
    
    

• Create a SpringBoot project and introduce the corresponding starting dependencies (web, mybatis, mysql driver, lombok)
• Introduce the configuration information of mybatis in application.properties, and prepare the corresponding entity classes (department entity class, employee entity class)
• Program in an interface-oriented manner in a three-tier architecture: Mapper, Service (interface, implementation class), Controller infrastructure
  • The structure of the final created SpringBoot project is as follows
  • 

development specification

This case is developed based on the current most mainstream front-end and back-end separation mode

• Restful development specification

  • REST (REpresentational State Transfer), representational state transition, is a software architectural style

• Uniform Response Results

  • Front-end and back-end unified response result Result
  • The specific code is as follows:

    • package com.example.pojo;
      // todo 统一结果的封装类Result
      
      import lombok.AllArgsConstructor;
      import lombok.Data;
      import lombok.NoArgsConstructor;
      
      @Data
      @NoArgsConstructor
      @AllArgsConstructor
      public class Result {
          private Integer code;//响应码，1 代表成功; 0 代表失败
          private String msg;  //响应信息 描述字符串
          private Object data; //返回的数据
      
          //增删改 成功响应
          public static Result success() {
              return new Result(1, "success", null);
          }
      
          //查询 成功响应
          public static Result success(Object data) {
              return new Result(1, "success", data);
          }
      
          //失败响应
          public static Result error(String msg) {
              return new Result(0, msg, null);
          }
      }
      

Development Process

• View the page prototype and clarify the requirements
• Read the interface documentation
• Idea analysis
• Development of functional interfaces
• interface test
• Front-end and back-end joint debugging test