SIP
414 Request-URI Too Long レスポンスのモック
The server is refusing to service the request because the Request-URI is longer than the server is willing to interpret.
完全なリファレンスを見る →1 HTTP レスポンス
HTTP/1.1 414 Request-URI Too Long
Content-Type: application/json
Date: Tue, 25 Feb 2026 12:00:00 GMT
Content-Length: 68
{
"error": "request-uri_too_long",
"message": "Request-URI Too Long"
}
2 curl でテストする
curl -i https://httpbin.org/status/414
3 フレームワークで 414 Request-URI Too Long を返す
django
from django.http import JsonResponse
def my_view(request):
return JsonResponse(
{"error": "request-uri_too_long", "message": "Request-URI Too Long"},
status=414,
)
flask
from flask import Flask, jsonify
app = Flask(__name__)
@app.route("/endpoint")
def my_endpoint():
return jsonify({"error": "request-uri_too_long", "message": "Request-URI Too Long"}), 414
fastapi
from fastapi import FastAPI
from fastapi.responses import JSONResponse
app = FastAPI()
@app.get("/endpoint")
def my_endpoint():
return JSONResponse(
content={"error": "request-uri_too_long", "message": "Request-URI Too Long"},
status_code=414,
)
express.js
// Express.js
app.get('/endpoint', (req, res) => {
res.status(414).json({"error": "request-uri_too_long", "message": "Request-URI Too Long"});
});
spring boot
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import java.util.Map;
@RestController
public class MyController {
@GetMapping("/endpoint")
public ResponseEntity<Map<String, Object>> myEndpoint() {
return ResponseEntity
.status(414)
.body(Map.of("error", "request-uri_too_long",
"message", "Request-URI Too Long"));
}
}
go net/http
package main
import (
"encoding/json"
"net/http"
)
func myHandler(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(414)
json.NewEncoder(w).Encode(map[string]string{
"error": "request-uri_too_long",
"message": "Request-URI Too Long",
})
}
ruby on rails
class MyController < ApplicationController
def my_action
render json: {"error": "request-uri_too_long", "message": "Request-URI Too Long"},
status: :request-uri_too_long
end
end
asp.net core
// ASP.NET Core Minimal API
app.MapGet("/endpoint", () =>
Results.Json(
new { error = "request-uri_too_long", message = "Request-URI Too Long" },
statusCode: 414
)
);