import pymysql

def connect_to_database():
    try:
        connection = pymysql.connect(
            host='127.0.0.1',
            user='root',
            password='root',
            database='250515sj',
            charset='utf8mb4',
            cursorclass=pymysql.cursors.DictCursor
        )
        print("數(shù)據(jù)庫(kù)連接成功！")
        return connection
    except Exception as e:
        # 詳細(xì)異常日志記錄
        print(f"數(shù)據(jù)庫(kù)連接錯(cuò)誤: {str(e)}")
        print("詳細(xì)錯(cuò)誤信息:\n", traceback.format_exc())
        return None

def get_employees_data(connection):
    try:
        with connection.cursor() as cursor:
            # 表存在性校驗(yàn)
            cursor.execute("SHOW TABLES LIKE 'employees'")
            if not cursor.fetchone():
                print("錯(cuò)誤：employees表不存在！")
                return None, None
                
            # 提取表結(jié)構(gòu)與數(shù)據(jù)
            cursor.execute("SHOW COLUMNS FROM employees")
            columns = [col['Field'] for col in cursor.fetchall()]
            cursor.execute("SELECT * FROM employees")
            data = cursor.fetchall()
            
            print(f"表結(jié)構(gòu): {columns}, 獲取到 {len(data)} 條記錄")
            return columns, data
    except Exception as e:
        # 數(shù)據(jù)操作異常處理
        print(f"獲取數(shù)據(jù)錯(cuò)誤: {str(e)}", traceback.format_exc())
        return None, None

def create_pdf_for_employee(employee_data, columns):
    try:
        # 目錄創(chuàng)建
        output_dir = "employee_pdfs"
        os.makedirs(output_dir, exist_ok=True)
        
        # 字段篩選與中文表頭映射
        export_data = [employee_data[col] for col in ['name', 'salary']]
        filename = f"{employee_data['name']}_{datetime.now().strftime('%Y%m%d_%H%M%S')}.pdf"
        path = os.path.join(output_dir, filename)
        
        # PDF文檔初始化
        doc = SimpleDocTemplate(path, pagesize=letter)
        styles = getSampleStyleSheet()
        
        # 中文字體注冊(cè)（關(guān)鍵步驟）
        pdfmetrics.registerFont(TTFont('SimHei', 'SimHei.ttf'))
        title_style = ParagraphStyle(
            'CustomTitle',
            parent=styles['Heading1'],
            fontName='SimHei',
            fontSize=24,
            spaceAfter=30
        )
        
        # 表格數(shù)據(jù)與樣式
        table_data = [['姓名', '薪資'], export_data]
        table = Table(table_data)
        table.setStyle(TableStyle([
            ('BACKGROUND', (0,0), (-1,0), colors.grey),    # 表頭背景色
            ('TEXTCOLOR', (0,0), (-1,0), colors.whitesmoke), # 表頭文字顏色
            ('ALIGN', (0,0), (-1,-1), 'CENTER'),            # 全局居中對(duì)齊
            ('FONTNAME', (0,0), (-1,-1), 'SimHei'),          # 中文字體應(yīng)用
            ('GRID', (0,0), (-1,-1), 1, colors.black)        # 邊框設(shè)置
        ]))
        
        # 文檔元素組裝
        elements = [
            Paragraph(f"{employee_data['name']}的個(gè)人信息", title_style),
            Spacer(1, 20),
            table
        ]
        doc.build(elements)
        return path
    except Exception as e:
        print(f"生成PDF錯(cuò)誤: {str(e)}", traceback.format_exc())
        return None

pip install pymysql reportlab