feat: 初始化项目架构

ruoyi-fastapi-backend/module_admin/service/captcha_service.py

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+from PIL import Image, ImageDraw, ImageFont
+import io
+import os
+import random
+import base64
+
+
+class CaptchaService:
+    """
+    验证码模块服务层
+    """
+
+    @classmethod
+    def create_captcha_image_service(cls):
+        # 创建空白图像
+        image = Image.new('RGB', (160, 60), color='#EAEAEA')
+
+        # 创建绘图对象
+        draw = ImageDraw.Draw(image)
+
+        # 设置字体
+        font = ImageFont.truetype(os.path.join(os.path.abspath(os.getcwd()), 'assets', 'font', 'Arial.ttf'), size=30)
+
+        # 生成两个0-9之间的随机整数
+        num1 = random.randint(0, 9)
+        num2 = random.randint(0, 9)
+        # 从运算符列表中随机选择一个
+        operational_character_list = ['+', '-', '*']
+        operational_character = random.choice(operational_character_list)
+        # 根据选择的运算符进行计算
+        if operational_character == '+':
+            result = num1 + num2
+        elif operational_character == '-':
+            result = num1 - num2
+        else:
+            result = num1 * num2
+        # 绘制文本
+        text = f"{num1} {operational_character} {num2} = ?"
+        draw.text((25, 15), text, fill='blue', font=font)
+
+        # 将图像数据保存到内存中
+        buffer = io.BytesIO()
+        image.save(buffer, format='PNG')
+
+        # 将图像数据转换为base64字符串
+        base64_string = base64.b64encode(buffer.getvalue()).decode()
+
+        return [base64_string, result]