用java sqlsever写一个零食信息管理系统
时间: 2024-05-21 11:11:42 浏览: 26
好的,这是一个技术问题,我可以为您提供帮助。一个零食信息管理系统可以包括以下功能:添加、编辑和删除零食的信息;搜索并展示所有零食的信息。首先,您需要在SQL Server中创建一个数据库和一个表来存储所有零食的信息。接着,在Java中使用JDBC连接到SQL Server,并且实现添加、编辑和删除零食信息的相关方法。最后,您需要实现一个搜索功能来查询并展示所有零食的信息。这是一个基本的框架,具体实现需要根据您的具体需求去调整。
相关问题
用java和sql sever写一个学生信息管理系统
以下是一个简单的学生信息管理系统的Java代码和SQL Server数据库:
Java代码:
```java
import java.sql.*;
public class StudentManagementSystem {
// Establishing a database connection
private static Connection getConnection() {
Connection con = null;
try {
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
String url = "jdbc:sqlserver://localhost:1433;databaseName=student_db";
String username = "sa";
String password = "password";
con = DriverManager.getConnection(url, username, password);
} catch (Exception e) {
e.printStackTrace();
}
return con;
}
// Adding a new student to the database
public static void addStudent(String name, int age, String gender, String address, String phone) {
try {
Connection con = getConnection();
PreparedStatement ps = con.prepareStatement("insert into students(name, age, gender, address, phone) values(?,?,?,?,?)");
ps.setString(1, name);
ps.setInt(2, age);
ps.setString(3, gender);
ps.setString(4, address);
ps.setString(5, phone);
ps.executeUpdate();
System.out.println("Student added successfully!");
con.close();
} catch (Exception e) {
e.printStackTrace();
}
}
// Updating an existing student in the database
public static void updateStudent(int id, String name, int age, String gender, String address, String phone) {
try {
Connection con = getConnection();
PreparedStatement ps = con.prepareStatement("update students set name=?, age=?, gender=?, address=?, phone=? where id=?");
ps.setString(1, name);
ps.setInt(2, age);
ps.setString(3, gender);
ps.setString(4, address);
ps.setString(5, phone);
ps.setInt(6, id);
ps.executeUpdate();
System.out.println("Student updated successfully!");
con.close();
} catch (Exception e) {
e.printStackTrace();
}
}
// Deleting a student from the database
public static void deleteStudent(int id) {
try {
Connection con = getConnection();
PreparedStatement ps = con.prepareStatement("delete from students where id=?");
ps.setInt(1, id);
ps.executeUpdate();
System.out.println("Student deleted successfully!");
con.close();
} catch (Exception e) {
e.printStackTrace();
}
}
// Displaying all students in the database
public static void viewStudents() {
try {
Connection con = getConnection();
Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery("select * from students");
while (rs.next()) {
System.out.println("ID: " + rs.getInt("id"));
System.out.println("Name: " + rs.getString("name"));
System.out.println("Age: " + rs.getInt("age"));
System.out.println("Gender: " + rs.getString("gender"));
System.out.println("Address: " + rs.getString("address"));
System.out.println("Phone: " + rs.getString("phone"));
System.out.println();
}
con.close();
} catch (Exception e) {
e.printStackTrace();
}
}
// Main method to test the program
public static void main(String[] args) {
addStudent("John Doe", 20, "Male", "123 Main St", "555-1234");
addStudent("Jane Smith", 21, "Female", "456 Oak Ave", "555-5678");
viewStudents();
updateStudent(1, "Johnny Doe", 21, "Male", "123 Main St", "555-1234");
deleteStudent(2);
viewStudents();
}
}
```
SQL Server数据库:
```sql
create database student_db;
use student_db;
create table students(
id int primary key identity(1,1),
name varchar(50) not null,
age int not null,
gender varchar(10) not null,
address varchar(100) not null,
phone varchar(20) not null
);
```
注意:这只是一个简单的示例程序,实际的学生信息管理系统需要更多的功能和完善的错误处理。同时,本程序的数据库连接信息(url、username、password)应该根据你的实际情况进行修改。
使用python和sqlsever写一个客户信息管理系统的代码
好的,以下是一个使用Python和SQL Server实现的简单客户信息管理系统的代码示例,仅供参考:
```python
import pyodbc
# 连接SQL Server数据库
conn = pyodbc.connect('DRIVER={SQL Server};SERVER=localhost;DATABASE=mydb;UID=username;PWD=password')
# 客户信息表格
customers_table = 'customers'
# 客户信息管理系统
class CustomerManagementSystem:
def __init__(self):
pass
# 添加客户信息
def add_customer(self, name, email, phone):
cursor = conn.cursor()
cursor.execute(f"INSERT INTO {customers_table} (name, email, phone) VALUES (?, ?, ?)", name, email, phone)
conn.commit()
cursor.close()
# 查询客户信息
def get_customer(self, id):
cursor = conn.cursor()
cursor.execute(f"SELECT * FROM {customers_table} WHERE id=?", id)
row = cursor.fetchone()
cursor.close()
return row
# 更新客户信息
def update_customer(self, id, name=None, email=None, phone=None):
cursor = conn.cursor()
if name:
cursor.execute(f"UPDATE {customers_table} SET name=? WHERE id=?", name, id)
if email:
cursor.execute(f"UPDATE {customers_table} SET email=? WHERE id=?", email, id)
if phone:
cursor.execute(f"UPDATE {customers_table} SET phone=? WHERE id=?", phone, id)
conn.commit()
cursor.close()
# 删除客户信息
def delete_customer(self, id):
cursor = conn.cursor()
cursor.execute(f"DELETE FROM {customers_table} WHERE id=?", id)
conn.commit()
cursor.close()
# 查询所有客户信息
def get_all_customers(self):
cursor = conn.cursor()
cursor.execute(f"SELECT * FROM {customers_table}")
rows = cursor.fetchall()
cursor.close()
return rows
# 客户信息管理系统示例
if __name__ == '__main__':
cms = CustomerManagementSystem()
cms.add_customer('张三', 'zs@example.com', '1234567890')
cms.add_customer('李四', 'ls@example.com', '0987654321')
cms.update_customer(1, name='王五')
cms.delete_customer(2)
customers = cms.get_all_customers()
for customer in customers:
print(customer)
```
这个代码示例实现了一个简单的客户信息管理系统,包括了添加客户信息、查询客户信息、更新客户信息、删除客户信息和查询所有客户信息等功能。也可以根据自己的需求进行修改和扩展。