Python利用Flask动态生成汉字头像

pip install pillow

@api.route('/avatars')
def index():

    # 生成随机汉字
    def get_random_common_char():
        # 读取文件中的常用汉字

        with open('demo.txt', 'r', encoding='utf-8') as f:
            common_chars = f.read()
            # 去除空格
            common_chars = common_chars.replace(' ', '')
            common_chars = common_chars.strip()

            # 创建字符映射表
            translator = {ord(c): None for c in common_chars if unicodedata.category(c).startswith('P')}

            # 使用字符映射表去除标点符号
            s = common_chars.translate(translator)

        return random.choice(s)

	hanchar = get_random_char()

	# 生成图片
    image = Image.new('RGB', (200, 200), (255, 255, 255))
    draw = ImageDraw.Draw(image)
    font = ImageFont.truetype('arial.ttf', 36)
    draw.text((50, 50), char, font=font, fill=(0, 0, 0))

    # 将图片转换为二进制数据
    image_binary = image.tobytes()

    # 设置响应头，返回图片
    response = make_response(image_binary)
    response.headers['Content-Type'] = 'image/jpeg'
    return response

# 获取根目录
app_root = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

# 拼接 static 文件夹路径
static_path = os.path.join(app_root, 'static')

os.path.join(static_path, 'demo.txt')

# 可以生成任意内容
han_char1 = get_random_common_char()
han_char2 = get_random_common_char()
han_char = han_char1 + han_char2

# 生成图片
image = Image.new('RGB', (64, 64), (255, 255, 255))
draw = ImageDraw.Draw(image)
font = ImageFont.truetype(os.path.join(static_path, 'font/msyh.ttf'), 28)

Image.new(mode, size, color=0)

# 绘制一个圆形
# 正方形的中心坐标
x = 32
y = 32
# 正方形的边长
length = 64
# 计算半径
r = length / 2
# 计算圆的左上角和右下角的坐标
left = x - r
top = y - r
right = x + r
bottom = y + r
draw.ellipse((left, top, right, bottom), fill=(0, 129, 255))

draw.text((4, 12), han_char, font=font, fill=(255, 255, 255))

# 将图像转换成字节流
buf = io.BytesIO()
image.save(buf, format='png')
buf.seek(0)

​​​​​​​return send_file(buf, mimetype='image/png')