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docs/en/docs/advanced/custom-response.md

{* ../../docs_src/response_model/tutorial001_01_py310.py ln[15:17] hl[16] *}

## HTML Response { #html-response }

To return a response with HTML directly from **FastAPI**, use `HTMLResponse`.

* Import `HTMLResponse`.
* Pass `HTMLResponse` as the parameter `response_class` of your *path operation decorator*.

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

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github.com/codelibs/fess

src/main/java/org/codelibs/fess/app/web/admin/dataconfig/AdminDataconfigAction.java

    /**
     * Show the index page.
     * @return The HTML response.
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index() {
        return asListHtml();
    }

    /**
     * Show the list page.
     * @param pageNumber The page number.
     * @param form The search form.
     * @return The HTML response.
     */
    @Execute

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

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github.com/codelibs/fess

src/main/java/org/codelibs/fess/app/web/admin/searchlist/AdminSearchlistAction.java

    // Search Execute
    // ==============
    /**
     * Displays the search list management index page.
     *
     * @param form the list form for filtering
     * @return HTML response for the search list page
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index(final ListForm form) {
        saveToken();

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

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github.com/tiangolo/fastapi

docs_src/websockets_/tutorial003_py310.py

from fastapi import FastAPI, WebSocket, WebSocketDisconnect
from fastapi.responses import HTMLResponse

app = FastAPI()

html = """
<!DOCTYPE html>
<html>
    <head>
        <title>Chat</title>
    </head>
    <body>
        <h1>WebSocket Chat</h1>
        <h2>Your ID: <span id="ws-id"></span></h2>
        <form action="" onsubmit="sendMessage(event)">
            <input type="text" id="messageText" autocomplete="off"/>

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

- Last Modified: Fri Feb 27 12:34:37 GMT 2026

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github.com/codelibs/fess

src/main/java/org/codelibs/fess/app/web/admin/dict/protwords/AdminDictProtwordsAction.java

    //                                                                           =========

    /**
     * Get the HTML response for the dictionary index page.
     * @return The HTML response.
     */
    protected HtmlResponse asDictIndexHtml() {
        return redirect(AdminDictAction.class);
    }

    private HtmlResponse asListHtml(final String dictId) {

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

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github.com/codelibs/fess

src/main/java/org/codelibs/fess/app/web/admin/webauth/AdminWebauthAction.java

    /**
     * Displays the web authentication management index page.
     *
     * @param form the search form for filtering
     * @return HTML response for the web authentication list page
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index(final SearchForm form) {
        return asListHtml();
    }

    /**

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

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github.com/tiangolo/fastapi

docs_src/websockets_/tutorial002_py310.py

from fastapi import (
    Cookie,
    Depends,
    FastAPI,
    Query,
    WebSocket,
    WebSocketException,
    status,
)
from fastapi.responses import HTMLResponse

app = FastAPI()

html = """
<!DOCTYPE html>
<html>
    <head>
        <title>Chat</title>
    </head>
    <body>
        <h1>WebSocket Chat</h1>
        <form action="" onsubmit="sendMessage(event)">

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

- Last Modified: Fri Feb 27 12:34:37 GMT 2026

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github.com/codelibs/fess

src/main/java/org/codelibs/fess/app/web/admin/crawlinginfo/AdminCrawlinginfoAction.java

    /**
     * Show the index page.
     * @return The HTML response.
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index() {
        saveToken();
        return asListHtml();
    }

    /**
     * Show the list page.
     * @param pageNumber The page number.
     * @param form The search form.
     * @return The HTML response.
     */
    @Execute

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

- Last Modified: Thu Nov 20 13:56:35 GMT 2025

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github.com/tiangolo/fastapi

docs_src/websockets_/tutorial002_an_py310.py

from fastapi import (
    Cookie,
    Depends,
    FastAPI,
    Query,
    WebSocket,
    WebSocketException,
    status,
)
from fastapi.responses import HTMLResponse

app = FastAPI()

html = """
<!DOCTYPE html>
<html>
    <head>
        <title>Chat</title>
    </head>
    <body>
        <h1>WebSocket Chat</h1>
        <form action="" onsubmit="sendMessage(event)">

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

- Last Modified: Fri Feb 27 12:34:37 GMT 2026

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github.com/codelibs/fess

src/main/java/org/codelibs/fess/app/web/admin/suggest/AdminSuggestAction.java

     *
     * @return HTML response for the suggest management page
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index() {
        saveToken();
        return asHtml(path_AdminSuggest_AdminSuggestJsp).useForm(SuggestForm.class);
    }

    /**
     * Deletes all suggest words from the suggest index.
     *
     * @return HTML response redirecting to the index page
     */

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

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

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