2026年主流AI编程工具深度对比：Cursor、Claude Code、Codex、GitHub Copilot 谁更适合你？

# Cursor 生成的 JWT 中间件示例
from fastapi import Request, HTTPException
from jose import JWTError, jwt
from datetime import datetime, timezone

SECRET_KEY = "your-secret-key"  # Cursor 会提示使用环境变量
ALGORITHM = "HS256"



async def jwt_auth_middleware(request: Request, call_next):
    """JWT 认证中间件，自动验证 Token 有效性。"""
    # 排除公开路径
    public_paths = {"/health", "/docs", "/openapi.json", "/auth/login"}
    if request.url.path in public_paths:
        return await call_next(request)



auth_header = request.headers.get("Authorization")
    if not auth_header or not auth_header.startswith("Bearer "):
        raise HTTPException(status_code=401, detail="缺少有效的认证令牌")



token = auth_header.replace("Bearer ", "")



try:
        payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
        # 检查 Token 是否过期
        exp = payload.get("exp")
        if exp and datetime.fromtimestamp(exp, tz=timezone.utc) < datetime.now(timezone.utc):
            raise HTTPException(status_code=401, detail="令牌已过期")



# 将用户信息附加到请求状态
        request.state.user = {
            "id": payload.get("sub"),
            "email": payload.get("email"),
            "role": payload.get("role", "user"),
        }



except JWTError:
        raise HTTPException(status_code=401, detail="无效的认证令牌")



return await call_next(request)

# Claude Code 生成的版本额外包含速率限制和审计日志
from fastapi import Request, HTTPException
from jose import JWTError, jwt
from datetime import datetime, timezone
import time
from collections import defaultdict

# 简单的内存级速率限制器（Claude 会建议使用 Redis）

_request_counts = defaultdict(list)

def _check_rate_limit(client_ip: str, max_requests: int = 100, window: int = 60):
    now = time.time()
    _request_counts[client_ip] = [t for t in _request_counts[client_ip] if now - t < window]
    if len(_request_counts[client_ip]) >= max_requests:
        raise HTTPException(status_code=429, detail="请求过于频繁")
    _request_counts[client_ip].append(now)



async def jwt_auth_middleware(request: Request, call_next):
    """JWT 认证中间件，包含速率限制和审计日志。"""
    client_ip = request.client.host if request.client else "unknown"
    _check_rate_limit(client_ip)



# ... 核心验证逻辑与 Cursor 类似 ...



# 审计日志记录（Claude 会自动添加）
    request.state.audit_log = {
        "timestamp": datetime.now(timezone.utc).isoformat(),
        "ip": client_ip,
        "endpoint": request.url.path,
        "user_id": request.state.user.get("id") if hasattr(request.state, "user") else None,
    }



return await call_next(request)

# Codex 版本更为简洁，但缺少过期检查和角色提取
def verify_token(token: str) -> dict:
    try:
        return jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
    except JWTError:
        raise HTTPException(status_code=401, detail="Invalid token")

# Copilot 生成的代码较为基础，需要多次 Tab 补全
def jwt_middleware(request: Request, call_next):
    token = request.headers.get("Authorization")
    if token:
        try:
            payload = jwt.decode(token.split(" ")[1], SECRET_KEY, algorithms=[ALGORITHM])
            request.state.user = payload
        except:
            raise HTTPException(status_code=401)
    return call_next(request)