Update .gitignore and add files

back/blueprints/yzm.py

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+# blueprints/yzm.py
+
+import random
+import smtplib
+import string
+import ssl
+import time
+
+from email.mime.text import MIMEText
+from flask import request, jsonify, Blueprint
+from flask_cors import CORS
+
+bp = Blueprint('yzm', __name__)
+CORS(bp, supports_credentials=True)
+
+verification_codes = {}
+
+def generate_code():
+    return ''.join(random.choices(string.digits, k=6))
+
+def send_email(receiver, code):
+    sender = '3492073524@qq.com'
+    password = 'xhemkcgrgximchcd'
+
+    msg = MIMEText(f'您的验证码是：{code}，5分钟内有效。')
+    msg['From'] = sender
+    msg['To'] = receiver
+    msg['Subject'] = '禾境智联后台管理系统 - 验证码'
+
+    max_retries = 3
+
+    for attempt in range(1, max_retries + 1):
+        try:
+            print(f"[尝试 {attempt}/{max_retries}] 正在连接 SMTP 服务器...")
+            context = ssl.create_default_context()
+
+            with smtplib.SMTP_SSL('smtp.qq.com', 465, context=context) as server:
+                print("✅ SMTP 连接成功")
+                server.login(sender, password)
+                print("🔑 登录成功")
+                server.sendmail(sender, receiver, msg.as_string())
+                print("📧 邮件发送成功")
+                return True  # 成功发送
+
+        except smtplib.SMTPAuthenticationError as e:
+            print(f"❌ 认证失败（授权码错误）: {str(e)}")
+            return False
+        except smtplib.SMTPConnectError as e:
+            print(f"❌ 连接失败: {str(e)}")
+        except smtplib.SMTPException as e:
+            error_msg = str(e)
+            if error_msg == "(-1, b'\\x00\\x00\\x00')" or "unexpected EOF" in error_msg:
+                print("⚠️ 警告: 忽略非致命异常，假设邮件已发送成功")
+                return True  # 假设邮件已成功发送
+            else:
+                print(f"❌ SMTP 异常: {error_msg}")
+        except Exception as e:
+            print(f"❌ 未知错误: {str(e)}")
+
+        if attempt < max_retries:
+            print("🔄 正在等待重试...")
+            time.sleep(2)
+        else:
+            print("💥 达到最大重试次数，邮件发送失败")
+    return False
+
+@bp.route("/captcha/email", methods=["POST"])
+def send_code():
+    data = request.json
+    email = data.get("email")
+
+    if not email:
+        return jsonify({"message": "邮箱不能为空"}), 400
+
+    code = generate_code()
+    verification_codes[email] = code
+    print(f"验证码已生成: {email} -> {code}")
+
+    if send_email(email, code):
+        return jsonify({"message": "验证码已发送"}), 200
+    else:
+        return jsonify({"message": "邮件发送失败"}), 500
+
+@bp.route("/captcha/verify", methods=["POST"])
+def verify_code():
+    data = request.json
+    email = data.get("email")
+    user_code = data.get("code")
+
+    if not email or not user_code:
+        return jsonify({"message": "参数错误", "valid": False}), 400
+
+    stored_code = verification_codes.get(email)
+
+    if stored_code and stored_code == user_code:
+        del verification_codes[email]
+        return jsonify({"valid": True}), 200
+    else:
+        return jsonify({"valid": False}), 400