{
  "id": "python/fastapi-route-order-conflict",
  "signature": "fastapi.routing.APIRoute: Route order conflict: /items/{item_id} conflicts with /items/new",
  "signature_zh": "FastAPI 路由冲突：/items/{item_id} 与 /items/new 冲突",
  "regex": "fastapi\\.routing\\.APIRoute:\\ Route\\ order\\ conflict:\\ /items/\\{item_id\\}\\ conflicts\\ with\\ /items/new",
  "domain": "python",
  "category": "config_error",
  "subcategory": null,
  "root_cause": "FastAPI 中动态路由和静态路由顺序不当，导致动态路由捕获了静态路径。",
  "root_cause_type": "generic",
  "root_cause_zh": "FastAPI 中动态路由和静态路由顺序不当，导致动态路由捕获了静态路径。",
  "versions": [
    {
      "version": "3.x",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "如果业务需要这两个路径，忽略会导致功能缺失。",
      "fail_rate": 0.5,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "FastAPI 按定义顺序匹配，交换后可能仍冲突。",
      "fail_rate": 0.6,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "",
      "success_rate": 0.95,
      "how": "@app.get('/items/new')\nasync def new_item(): ...\n@app.get('/items/{item_id}')\nasync def get_item(item_id: int): ...",
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "success_rate": 0.9,
      "how": "@app.get('/items/{item_id:\\\\d+}')\nasync def get_item(item_id: int): ...",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": null,
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.88,
  "fix_success_rate": 0.8,
  "resolvable": "true",
  "first_seen": "2024-03-08",
  "last_confirmed": "2025-01-01",
  "last_updated": "2025-01-01",
  "evidence_count": 0,
  "tags": [],
  "locale": "en",
  "aliases": []
}