Design and implementation of online supermarket based on Javade

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3.5 System functional structure

User functions:

1. Register and log in to the website and upload personal information;
2. Users can log in to the system to browse product information, purchase products and redeem points;
3. You can view basic product information on the product details interface;
4. Users can view product information of the same celebrities;
5. On the shopping cart interface, you can see the products you have added to the shopping cart. Once you decide to purchase, you can make an order by paying;
6. Users can view order details and order status on the order interface;
7. Users can save their favorite items so they can find them later.

The backend administrator functions are as follows:

1. The administrator enters the administrator login interface and enters the correct account number and password to log in;
2. In the user management interface, you can see user account, password, gender, mobile phone number and other information, and you can also modify, delete and other operations on this information;
3. Product type management, the administrator can add, delete, modify and check product types;
4. Product information management interface, the administrator can add, delete, modify and check product information;
5. Announcement management interface allows you to view and delete announcement content;
6. In order management, you can see the order number, total price, quantity and other information;
7. Carousel image management, you can view, modify and other operations on the carousel image.

3.6 System Structure Diagram

As shown in the figure below, the modules of the entire system are divided into user management and administrator management. The administrator part is subdivided into home page, personal center, product information management, user management, product cost management, system management, and order management. The user section includes home page, personal center, shopping cart, order management, and my collection management.

The overall functional structure of the system is shown in Figure 3.1:

3.7 Online supermarket system login process  

As shown in the login module diagram below, enter the correct account number and password to log in whether it is the administrator login interface or the user management interface.

4.2 Data table design

The underlying logic of the operation of this system is to perform operations such as adding, deleting, modifying, and checking data in the database. It can be seen that the design of the database is a very important link. This online supermarket system analyzes the needs of merchants, users, and administrators, and analyzes the needs of the database. A targeted design was carried out. In order to facilitate data query, the online supermarket system created a data table in its database. These entity objects are the basic prototype of the data table structure that contains all data entities and attributes of the website. As shown in the following table:

Table 4.1 Users

Field Name	type	length	Field description	primary key	default value
id	bigint		primary key	primary key
addtime	timestamp		creation time		CURRENT_TIMESTAMP
yonghuzhanghao	varchar	200	user account
mima	varchar	200	password
yonghuxingming	varchar	200	username
xingbie	varchar	200	gender
nianling	varchar	200	age
touxiang	varchar	200	avatar
money	float		balance		0
vip	varchar	200	Member or not		no

Table 4.2 Configuration file

Field Name	type	length	Field description	primary key	default value
id	bigint		primary key	primary key
name	varchar	100	Configuration parameter name
value	varchar	100	Configuration parameter values

Table 4.3 User table

Field Name	type	length	Field description	primary key	default value
id	bigint		primary key	primary key
username	varchar	100	username
password	varchar	100	password
role	varchar	100	Role		administrator
addtime	timestamp		Add time		CURRENT_TIMESTAMP

Table 4.4 Shopping cart table

Field Name	type	length	Field description	primary key	default value
id	bigint		primary key	primary key
addtime	timestamp		creation time		CURRENT_TIMESTAMP
tablename	varchar	200	Product table name		shangpinxinxi
userid	bigint		user id
goodid	bigint		Product id
goodname	varchar	200	product name
picture	varchar	200	picture
buynumber	int		Purchase quantity
price	float		unit price
discountprice	float		member price
shangjiazhanghao	varchar	200	Business Name

Table 4.5 token table

Field Name	type	length	Field description	primary key	default value
id	bigint		primary key	primary key
userid	bigint		user id
username	varchar	100	username
tablename	varchar	100	Table Name
role	varchar	100	Role
token	varchar	200	password
addtime	timestamp		Add time		CURRENT_TIMESTAMP
expiratedtime	timestamp		Expiration		CURRENT_TIMESTAMP

Table 4.6 Address

Field Name	type	length	Field description	primary key	default value
addtime	timestamp		creation time		CURRENT_TIMESTAMP
userid	bigint		user id
address	varchar	200	address
name	varchar	200	Receiver
phone	varchar	200	Telephone
isdefault	varchar	200	Whether to default address [yes/no]

Table 4.7 Collection table

Field Name	type	length	Field description	primary key	default value
id	bigint		primary key	primary key
addtime	timestamp		creation time		CURRENT_TIMESTAMP
userid	bigint		user id
refid	bigint		Collection id
tablename	varchar	200	Table Name
name	varchar	200	collection name
picture	varchar	200	Collection pictures
type	varchar	200	Type (1: Collection, 21: Like, 22: Dislike)		1
inteltype	varchar	200	Recommended type

Table 4.8 Product information

Field Name	type	length	Field description	primary key	default value
id	bigint		primary key	primary key
addtime	timestamp		creation time		CURRENT_TIMESTAMP
shangpinbianhao	varchar	200	Product Number
shangpinmingcheng	varchar	200	product name
pinpai	varchar	200	brand
shangjiazhanghao	varchar	200	Merchant account
dianpuming	varchar	200	Store name
shangpinleibi	varchar	200	Product Category
shangpintupian	varchar	200	product picture
shangpinxiangqing	longtext	4294967295	product details
price	float		price
vipprice	float		member price		-1

4.3 Design of system homepage 

This is the homepage of the online supermarket system, which requires a concise and clear interface, simple operation, and good compatibility. When designing the interface, priority should be given to standardized design, followed by improving the interface design. But when beautifying the interface, you should not increase the complexity of the operation. This page allows users to log in and provides a navigation bar to access each module.

The system homepage mainly includes homepage, product information, celebrity styles, personal center, announcement information, shopping cart and other contents. In addition, there is an index function based on product name; as shown in the figure:

As shown in Figure 4.8, enter the account number and password used during registration on the user login interface to log in.

4.6 System Function Test

The main module tests of the system are shown in Table 4.13:

Table 4.13 System main module test table

Function	System login module test
Purpose	Test whether the login function in the system login module is valid
Prerequisites	User information has been stored in the data
input/action	Output results	The actual situation
Username: admin Password: 123	Able to log in to the system normally	normal
Username: admin Password: empty	Unable to log in to the system and it says the password cannot be empty	normal
Username: empty Password: empty	Unable to log in to the system and it says username and password cannot be empty	normal
Function	Module testing of shopping cart functionality
Purpose	Test whether the shopping cart can add or delete items that the user wants to purchase
Prerequisites	A product has been selected for purchase
input/action	Output results	The actual situation
Select a product and click to purchase	A product is added to the shopping cart	normal
Choose to continue purchasing the product first	Jump to the home page to allow consumers to continue selecting products	normal
Delete items from shopping cart	Click to delete the purchased item and you will be redirected to the interface where the shopping cart is empty.	normal
Function	Testing of product management function module
Purpose	Test whether the addition, modification and deletion of product management are normal
Prerequisites	First, test new products
input/action	Output results	The actual situation
Enter the backend product management page	Product list display	normal
Product addition	Jump to the product information addition page, enter the data and put it into the goods table.	normal
Product modification	Click product modification to jump to the product modification interface	normal
Product deletion	Click the delete button after a product on the product list page to delete it.	normal

Table of contents

Chapter 1 Introduction

1.1 Background of the topic

1.2 The purpose and significance of the research 1

1.3 Development status at home and abroad...................................... .2

1.4 Main work done in the paper 3

Chapter 2 Technical Introduction 4

2.1 B/S architecture 4

2.2 Introduction to MySQL 4

2.3 MySQL environment configuration 4

2.4 Introduction to Java language 5

2.5 Technologies used in the system 5

Chapter 3 System Analysis and Design 6

3.1 System Description 6

3.2 Analysis of system functions 6

3.3 System design ideas 6

3.4 System design ideas 7

3.5 System functional structure 7

3.6 System Structure Diagram 8

3.7 Online supermarket system login process 9

Chapter 4 Project Design and System Testing 10

4.1 Database conceptual design 10

4.2 Data table design 13

4.3 Design of system homepage

4.4Management staff performance model 20

4.5 User shopping process test

4.6 series functional ability test 23

Chapter 5  Conclusion and outlook

references

Acknowledgments