## Base64 vs Files { #base64-vs-files }

Consider first if you can use [Request Files](../tutorial/request-files.md) for uploading binary data and [Custom Response - FileResponse](./custom-response.md#fileresponse--fileresponse-) for sending binary data, instead of encoding it in JSON.

JSON can only contain UTF-8 encoded strings, so it can't contain raw bytes.

                    # but since the key is not valid, openapi.utils.get_openapi will raise ValueError
                    "hello": {"description": "Not a valid additional response"},
                    "200": {
                        "description": "Successful Response",
                        "content": {"application/json": {"schema": {}}},
                    },
                },
                "summary": "A",

import org.codelibs.fess.util.RenderDataUtil;
import org.dbflute.optional.OptionalEntity;
import org.dbflute.optional.OptionalThing;
import org.lastaflute.web.Execute;
import org.lastaflute.web.response.HtmlResponse;
import org.lastaflute.web.response.render.RenderData;
import org.lastaflute.web.ruts.process.ActionRuntime;
import org.lastaflute.web.util.LaRequestUtil;

import jakarta.annotation.Resource;

/**

import org.codelibs.fess.dict.stemmeroverride.StemmerOverrideFile;
import org.codelibs.fess.dict.stemmeroverride.StemmerOverrideItem;
import org.lastaflute.web.Execute;
import org.lastaflute.web.response.JsonResponse;
import org.lastaflute.web.response.StreamResponse;

import jakarta.annotation.Resource;

/**
 * API action for admin Stemmer Override dictionary management.

以下是文件中其他位置的指引連結，適用於一般或常見問題。

## 篩選資料 - 安全性 { #filter-data-security }

為確保你不會回傳超出應有的資料，請參閱[教學 - 回應模型 - 回傳型別](../tutorial/response-model.md)。

## 最佳化回應效能 - 回應模型 - 回傳型別 { #optimize-response-performance-response-model-return-type }

為了在回傳 JSON 資料時最佳化效能，請使用回傳型別或回應模型，如此 Pydantic 會在 Rust 端處理序列化為 JSON，而不經過 Python。更多內容請參閱[教學 - 回應模型 - 回傳型別](../tutorial/response-model.md)。

## 文件標籤 - OpenAPI { #documentation-tags-openapi }

                }
            }
        }
    }

    /**
     * Gets response data for the given URI.
     *
     * @param uri the URI to get response data for
     * @param includeContent whether to include content in the response
     * @return the response data
     * @throws CrawlingAccessException if unable to access the URI

import org.codelibs.fess.app.web.api.admin.FessApiAdminAction;
import org.codelibs.fess.opensearch.config.exentity.DuplicateHost;
import org.lastaflute.web.Execute;
import org.lastaflute.web.response.JsonResponse;

import jakarta.annotation.Resource;

/**
 * API action for admin duplicate host management.
 * Provides RESTful API endpoints for managing duplicate host settings in the Fess search engine.

**FastAPI** fornece isso como uma conveniência para você, o desenvolvedor. Mas vem diretamente da Starlette.

///

### Antes e depois da `response` { #before-and-after-the-response }

Você pode adicionar código para ser executado com a `request`, antes que qualquer *operação de rota* o receba.

E também depois que a `response` é gerada, antes de retorná-la.

    }

    /**
     * @param response
     *            the response to set
     */
    @Override
    public final void setResponse(final CommonServerMessageBlockResponse response) {
        if (!(response instanceof ServerMessageBlock)) {
            throw new IllegalArgumentException();
        }
        this.response = (ServerMessageBlock) response;
    }

    /**
     * {@inheritDoc}

        c = TestClient(app, root_path=prefix)
        c.get("/openapi.json")

    # A clean request should not have any of them
    clean_client = TestClient(app)
    response = clean_client.get("/openapi.json")
    data = response.json()
    servers = [s.get("url") for s in data.get("servers", [])]
    for prefix in ["/path-a", "/path-b", "/path-c"]:
        assert prefix not in servers, (