HTTP
422 Unprocessable Content 응답 모의 테스트
The server understands the content type and syntax, but was unable to process the contained instructions. Common in API validation errors.
전체 레퍼런스 보기 →1 HTTP 응답
HTTP/1.1 422 Unprocessable Content
Content-Type: application/json
Date: Tue, 25 Feb 2026 12:00:00 GMT
Content-Length: 90
{
"error": "validation_error",
"errors": [
{
"field": "email",
"message": "Invalid format"
}
]
}
2 curl로 테스트하기
curl -i https://httpbin.org/status/422
3 프레임워크에서 422 Unprocessable Content 반환하기
django
from django.http import JsonResponse
def my_view(request):
return JsonResponse(
{"error": "validation_error", "errors": [{"field": "email", "message": "Invalid format"}]},
status=422,
)
flask
from flask import Flask, jsonify
app = Flask(__name__)
@app.route("/endpoint")
def my_endpoint():
return jsonify({"error": "validation_error", "errors": [{"field": "email", "message": "Invalid format"}]}), 422
fastapi
from fastapi import FastAPI
from fastapi.responses import JSONResponse
app = FastAPI()
@app.get("/endpoint")
def my_endpoint():
return JSONResponse(
content={"error": "validation_error", "errors": [{"field": "email", "message": "Invalid format"}]},
status_code=422,
)
express.js
// Express.js
app.get('/endpoint', (req, res) => {
res.status(422).json({"error": "validation_error", "errors": [{"field": "email", "message": "Invalid format"}]});
});
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(422)
.body(Map.of("error", "unprocessable_content",
"message", "Unprocessable Content"));
}
}
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(422)
json.NewEncoder(w).Encode(map[string]string{
"error": "unprocessable_content",
"message": "Unprocessable Content",
})
}
ruby on rails
class MyController < ApplicationController
def my_action
render json: {"error": "validation_error", "errors": [{"field": "email", "message": "Invalid format"}]},
status: :unprocessable_content
end
end
asp.net core
// ASP.NET Core Minimal API
app.MapGet("/endpoint", () =>
Results.Json(
new { error = "unprocessable_content", message = "Unprocessable Content" },
statusCode: 422
)
);