400 - Code Search

fess-crawler/src/main/java/org/codelibs/fess/crawler/Constants.java

     */
    public static final int NOT_MODIFIED_STATUS_CODE = 304;

    /**
     * The HTTP status code for Bad Request.
     */
    public static final int BAD_REQUEST_STATUS_CODE = 400;

    /**
     * The HTTP status code for Forbidden.
     */
    public static final int FORBIDDEN_STATUS_CODE = 403;

    /**
     * The HTTP status code for Not Found.
     */

Created: Sun Apr 12 03:50:13 GMT 2026

- Last Modified: Sun Jul 06 02:13:03 GMT 2025

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github.com/square/okhttp

samples/slack/src/main/java/okhttp3/slack/OAuthSessionFactory.java

    try {
      OAuthSession session = slackApi.exchangeCode(code, redirectUrl());
      listener.sessionGranted(session);
    } catch (IOException e) {
      return new MockResponse()
          .setResponseCode(400)
          .setBody("code exchange failed: " + e.getMessage());
    }

    synchronized (this) {
      listeners.remove(state);
    }

    // Success!
    return new MockResponse()

Created: Fri Apr 03 11:42:14 GMT 2026

- Last Modified: Thu Aug 12 07:26:27 GMT 2021

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github.com/codelibs/fess

src/main/java/org/codelibs/fess/mylasta/direction/sponsor/FessApiFailureHook.java

    //                                                                          Definition
    //                                                                          ==========
    protected static final int HTTP_BAD_REQUEST = 400;
    protected static final int HTTP_UNAUTHORIZED = 401;

    // ===================================================================================

Created: Tue Mar 31 13:07:34 GMT 2026

- Last Modified: Thu Jul 17 08:28:31 GMT 2025

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github.com/gradle/gradle

build-logic-commons/code-quality-rules/src/main/resources/classycle/classycle_report_resources.zip

align=\"right\">" : ">") + columns[j] + "</td>"; } text += "</tr>"; } } text += "</table>"; } showText(text); } function showText(text) { list = window.open("", "list", "dependent=yes,location=no,menubar=yes,resizable=yes,toolbar=no,scrollbars=yes,width=500,height=400"); list.document.close(); list.document.open(); list.document.write("<html><head><style type=\"text/css\">"); list.document.write("body { font-family:Helvetica,Arial,sans-serif; } "); list.document.write(".link { cursor:pointer;text-decoration:underline;...

Created: Wed Apr 01 11:36:16 GMT 2026

- Last Modified: Wed Dec 09 08:14:05 GMT 2020

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github.com/codelibs/fess

src/main/java/org/codelibs/fess/api/engine/SearchEngineApiManager.java

            String message;
            if (Constants.TRUE.equalsIgnoreCase(ComponentUtil.getFessConfig().getApiJsonResponseExceptionIncluded())) {
                if (statusCode >= 400 && statusCode < 500) {
                    if (logger.isDebugEnabled()) {
                        logger.debug("Failed to access Web API.", e);
                    }
                } else {

Created: Tue Mar 31 13:07:34 GMT 2026

- Last Modified: Thu Mar 26 02:24:40 GMT 2026

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github.com/tiangolo/fastapi

docs/en/docs/advanced/middleware.md

* `www_redirect` - If set to True, requests to non-www versions of the allowed hosts will be redirected to their www counterparts. Defaults to `True`.

If an incoming request does not validate correctly then a `400` response will be sent.

## `GZipMiddleware` { #gzipmiddleware }

Handles GZip responses for any request that includes `"gzip"` in the `Accept-Encoding` header.

Created: Sun Apr 05 07:19:11 GMT 2026

- Last Modified: Thu Mar 05 18:13:19 GMT 2026

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github.com/codelibs/fess-crawler

fess-crawler/src/main/java/org/codelibs/fess/crawler/client/http/form/Hc4FormScheme.java

            }

            executor.accept(httpRequest, (response, entity) -> {
                final int httpStatusCode = response.getStatusLine().getStatusCode();
                if (httpStatusCode < 400 || httpStatusCode == 401) {
                    parseTokenPage(tokenPattern, responseParams, entity);
                } else {
                    String content;
                    try {

Created: Sun Apr 12 03:50:13 GMT 2026

- Last Modified: Thu Jan 08 14:22:26 GMT 2026

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github.com/tiangolo/fastapi

docs_src/security/tutorial004_an_py310.py

    return user


async def get_current_active_user(
    current_user: Annotated[User, Depends(get_current_user)],
):
    if current_user.disabled:
        raise HTTPException(status_code=400, detail="Inactive user")
    return current_user


@app.post("/token")
async def login_for_access_token(
    form_data: Annotated[OAuth2PasswordRequestForm, Depends()],
) -> Token:

Created: Sun Apr 05 07:19:11 GMT 2026

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github.com/tiangolo/fastapi

docs/en/docs/tutorial/response-status-code.md

Sebastián Ramírez <******@****.***> 1772734399 -0800

Created: Sun Apr 05 07:19:11 GMT 2026

- Last Modified: Thu Mar 05 18:13:19 GMT 2026

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github.com/tiangolo/fastapi

docs/ja/docs/tutorial/handling-errors.md

* クライアントはそのリソースにアクセスできません。
* クライアントがアクセスしようとしていた項目が存在しません。
* など

これらの場合、通常は **400**（400から499）の範囲内の **HTTPステータスコード** を返すことになります。

これは200のHTTPステータスコード（200から299）に似ています。これらの「200」ステータスコードは、何らかの形でリクエスト「成功」であったことを意味します。

400の範囲にあるステータスコードは、クライアントからのエラーがあったことを意味します。

**"404 Not Found"** のエラー（およびジョーク）を覚えていますか？

## `HTTPException`の使用 { #use-httpexception }

HTTPレスポンスをエラーでクライアントに返すには、`HTTPException`を使用します。

Created: Sun Apr 05 07:19:11 GMT 2026

- Last Modified: Fri Mar 20 14:07:17 GMT 2026

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