How to develop a simple online complaint management system using MySQL and Python

How to use MySQL and Python to develop a simple online complaint management system

Introduction:
With the development of society, complaint management systems play a role in various fields plays an important role. Using MySQL and Python to develop a simple online complaint management system is an efficient and fast way. This article will introduce how to use these two tools to implement this system.

1. Preparation
Before starting development, we need to install and configure the required tools, including MySQL database, Python environment and corresponding libraries.

1. Install MySQL database
   Download the latest MySQL installation file from the MySQL official website, complete the installation according to the instructions and set the administrator account and password.
2. Installing Python environment
   Download the latest Python installation file from the official Python website and complete the installation according to the instructions.
3. Install the connection library for MySQL and Python
   Use the command line or terminal to enter the following instructions to install the connection library for MySQL and Python:

pip install mysql-connector-python

2. Create databases and tables
Create a new database in the MySQL database, and create a table named "complaints" in the database to store complaint information. The following is the structure of the table:

CREATE TABLE complaints (
    id INT PRIMARY KEY AUTO_INCREMENT,
    customer_name VARCHAR(255),
    customer_email VARCHAR(255),
    complaint_subject VARCHAR(255),
    complaint_message TEXT,
    complaint_date TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

3. Develop complaint management system

1. Connect to the database
   In Python, use the following code to connect to the MySQL database:

import mysql.connector

# 创建数据库连接
mydb = mysql.connector.connect(
    host = "localhost",
    user = "root",
    password = "your_password",
    database = "your_database"
)

# 创建数据库游标
mycursor = mydb.cursor()

2. Add complaint
   Use the following code to add a complaint information to the "complaints" table in the database:

# 获取用户输入
customer_name = input("请输入您的姓名：")
customer_email = input("请输入您的邮箱：")
complaint_subject = input("请输入投诉主题：")
complaint_message = input("请输入投诉内容：")

# 插入数据到表中
sql = "INSERT INTO complaints (customer_name, customer_email, complaint_subject, complaint_message) VALUES (%s, %s, %s, %s)"
val = (customer_name, customer_email, complaint_subject, complaint_message)
mycursor.execute(sql, val)

# 提交更改
mydb.commit()

# 输出成功信息
print("投诉已成功提交！")

3. Query complaint
   Use The following code queries all complaint information in the database:

# 查询数据表中的所有投诉信息
mycursor.execute("SELECT * FROM complaints")

# 获取查询到的所有结果
results = mycursor.fetchall()

# 输出查询结果
for result in results:
    print(result)

4. Query complaints based on conditions
   Use the following code to query complaint information in the database based on conditions:

# 获取用户输入
complaint_subject = input("请输入要查询的投诉主题：")

# 根据条件查询数据
sql = "SELECT * FROM complaints WHERE complaint_subject = %s"
val = (complaint_subject,)
mycursor.execute(sql, val)

# 获取查询结果
results = mycursor.fetchall()

# 输出查询结果
for result in results:
    print(result)

IV. Summary
Through this article, we learned how to use MySQL and Python to develop a simple online complaint management system. We learned how to connect to the database, create tables, add complaints, query complaints and query complaints based on conditions. This simple system can be used as a starting point, and can be expanded and optimized according to needs in practical applications.

References:

• MySQL official website: https://www.mysql.com/
• Python official website: https://www.python. org/
• MySQL connection library for Python: https://pypi.org/project/mysql-connector-python/

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