[fess.codelibs.org](https://fess.codelibs.org/)

## 问题/疑问

[discuss.codelibs.org](https://discuss.codelibs.org/c/FessEN/)

## 入门

您可以通过两种方式尝试 Fess。第一种是自行下载并安装，第二种是使用 [Docker](https://www.docker.com/products/docker-engine)。

### 下载并安装/运行

Fess 15.3 现已发布，可在 [发布页面](https://github.com/codelibs/fess/releases "download") 下载。提供三种下载形式：deb、rpm、zip。

以下命令展示了如何使用 zip 下载：

    $ unzip fess-15.3.x.zip
    $ cd fess-15.3.x

import org.codelibs.fess.util.ResourceUtil;
import org.codelibs.fess.util.SystemUtil;

import jakarta.servlet.ServletContext;

/**
 * Job class for generating thumbnails for documents in the search engine.
 * This job executes the ThumbnailGenerator process as a separate JVM process
 * to create thumbnail images for supported document types.
 */
public class GenerateThumbnailJob extends ExecJob {

<a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS" class="external-link" target="_blank">CORS o "Cross-Origin Resource Sharing"</a> se refiere a situaciones en las que un frontend que se ejecuta en un navegador tiene código JavaScript que se comunica con un backend, y el backend está en un "origen" diferente al frontend.

## Origen { #origin }

[discuss.codelibs.org](https://discuss.codelibs.org/c/FessEN/)

## Cómo Empezar

Hay dos maneras de probar Fess. La primera es descargar e instalarlo tú mismo. La segunda es usar [Docker](https://www.docker.com/products/docker-engine).

### Descargar e Instalar/Ejecutar

    // Attribute
    // =========
    /** The search helper for performing search operations. */
    @Resource
    protected SearchHelper searchHelper;

    /** The search engine client for interacting with OpenSearch. */
    @Resource
    protected SearchEngineClient searchEngineClient;

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

import jakarta.annotation.Resource;

/**
 * API action for admin elevate word management.
 * Provides RESTful API endpoints for managing elevate word settings in the Fess search engine.
 * Elevate words boost specific search terms to appear higher in search results.
 */
public class ApiAdminElevatewordAction extends FessApiAdminAction {

import org.opensearch.monitor.os.OsProbe;
import org.opensearch.monitor.process.ProcessProbe;

import jakarta.annotation.Resource;

/**
 * Main executable class for running crawling operations in the Fess search engine.
 * This class serves as the entry point for crawling web content, file systems, and data stores.
 * It manages the crawling lifecycle, including initialization, execution coordination,
 * monitoring, and cleanup operations.
 *

#### Liste { #list }

Definieren wir zum Beispiel eine Variable, die eine `list` von `str` – eine Liste von Strings – sein soll.

Deklarieren Sie die Variable mit der gleichen Doppelpunkt-Syntax (`:`).

Als Typ nehmen Sie `list`.

import org.codelibs.fess.util.ComponentUtil;
import org.lastaflute.di.exception.IORuntimeException;
import org.lastaflute.job.LaJobRuntime;

/**
 * Abstract base class for executable jobs in the Fess search engine.
 * This class provides common functionality for job execution including process management,
 * logging configuration, JVM options, and timeout handling.
 *

 * <li>Transforms document data using appropriate transformers</li>
 * <li>Applies document boosting rules and click/favorite count enhancements</li>
 * <li>Sends processed documents to the search engine for indexing</li>
 * <li>Manages cleanup of processed crawler session data</li>
 * </ul>
 *
 * <p>The updater runs continuously until crawling is finished and all documents are processed.