Spring AI
The Spring AI 项目旨在成为 Java 世界的 LangChain。
将 Spring AI 与 Spring Data Neo4j 结合使用，可以在现有领域模型的基础上进行构建，将其转换为图，并使用向量嵌入对其进行丰富。
安装
如果您正在使用 Spring Initializr，可以将您选择的 Spring AI 模型和 Neo4j Vector Database 作为依赖项添加到您的项目中，它将引入所有相关组件。
如果您手动添加依赖项，Spring AI 尚未成为通用发布库，因此您需要将依赖项以及快照和里程碑存储库添加到您的 pom.xml 文件中，具体请参阅入门文档。
您接下来需要添加的是 Neo4j 向量数据库的配置，它还需要附带自定义驱动程序和嵌入客户端配置。最简单的方法可能是在主应用程序类中为每个组件创建 Spring Bean。这在文档中有所提及，但未提供完整代码。下面显示了如何配置 Neo4j 向量数据库的示例（请注意，您需要修改 vectorStore bean 以匹配您的特定配置）
return new OpenAiEmbeddingModel(new OpenAiApi(System.getenv("SPRING_AI_OPENAI_API_KEY")));
}
@Bean
public Neo4jVectorStore vectorStore(Driver driver, EmbeddingModel embeddingModel) {
return new Neo4jVectorStore(driver, embeddingModel,
Neo4jVectorStore.Neo4jVectorStoreConfig.builder()
.withIndexName("form_10k_chunks")
.withLabel("Chunk")
.withEmbeddingProperty("textEmbedding")
.build(), true);
}
}配置好向量存储后，我们可以通过三步过程使用 Spring AI 进行检索增强生成 (RAG)。
-
调用向量相似度搜索方法以检索最相似的文档。
-
使用相似文档作为检索查询的输入，该查询从图中提取相关实体。
-
将相似文档（及其相关的图实体）作为输入提供给 LLM 将用于生成响应的提示。
以下代码片段演示了如何将 Spring AI 与 Neo4j 向量存储结合用于 RAG
<link rel="preload" href="https://github.githubassets.com/assets/mona-sans-d1bf285e9b9b.woff2" as="font" type="font/woff2" crossorigin>
<link crossorigin="anonymous" media="all" rel="stylesheet" href="https://github.githubassets.com/assets/light-c59dc71e3a4c.css" /><link crossorigin="anonymous" media="all" rel="stylesheet" href="https://github.githubassets.com/assets/light_high_contrast-4bf0cb726930.css" /><link crossorigin="anonymous" media="all" rel="stylesheet" href="https://github.githubassets.com/assets/dark-89751e879f8b.css" /><link crossorigin="anonymous" media="all" rel="stylesheet" href="https://github.githubassets.com/assets/dark_high_contrast-67c7180a598a.css" /><link data-color-theme="light" crossorigin="anonymous" media="all" rel="stylesheet" data-href="https://github.githubassets.com/assets/light-c59dc71e3a4c.css" /><link data-color-theme="light_high_contrast" crossorigin="anonymous" media="all" rel="stylesheet" data-href="https://github.githubassets.com/assets/light_high_contrast-4bf0cb726930.css" /><link data-color-theme="light_colorblind" crossorigin="anonymous" media="all" rel="stylesheet" data-href="https://github.githubassets.com/assets/light_colorblind-6060e905eb78.css" /><link data-color-theme="light_colorblind_high_contrast" crossorigin="anonymous" media="all" rel="stylesheet" data-href="https://github.githubassets.com/assets/light_colorblind_high_contrast-04e818620b9c.css" /><link data-color-theme="light_tritanopia" crossorigin="anonymous" media="all" rel="stylesheet" data-href="https://github.githubassets.com/assets/light_tritanopia-ae65df249e0f.css" /><link data-color-theme="light_tritanopia_high_contrast" crossorigin="anonymous" media="all" rel="stylesheet" data-href="https://github.githubassets.com/assets/light_tritanopia_high_contrast-fdadc12a1ec2.css" /><link data-color-theme="dark" crossorigin="anonymous" media="all" rel="stylesheet" data-href="https://github.githubassets.com/assets/dark-89751e879f8b.css" /><link data-color-theme="dark_high_contrast" crossorigin="anonymous" media="all" rel="stylesheet" data-href="https://github.githubassets.com/assets/dark_high_contrast-67c7180a598a.css" /><link data-color-theme="dark_colorblind" crossorigin="anonymous" media="all" rel="stylesheet" data-href="https://github.githubassets.com/assets/dark_colorblind-4277e18a7c75.css" /><link data-color-theme="dark_colorblind_high_contrast" crossorigin="anonymous" media="all" rel="stylesheet" data-href="https://github.githubassets.com/assets/dark_colorblind_high_contrast-2e33ed61bc8c.css" /><link data-color-theme="dark_tritanopia" crossorigin="anonymous" media="all" rel="stylesheet" data-href="https://github.githubassets.com/assets/dark_tritanopia-48d44d87614d.css" /><link data-color-theme="dark_tritanopia_high_contrast" crossorigin="anonymous" media="all" rel="stylesheet" data-href="https://github.githubassets.com/assets/dark_tritanopia_high_contrast-6adcb5080302.css" /><link data-color-theme="dark_dimmed" crossorigin="anonymous" media="all" rel="stylesheet" data-href="https://github.githubassets.com/assets/dark_dimmed-250cee4c1ea8.css" /><link data-color-theme="dark_dimmed_high_contrast" crossorigin="anonymous" media="all" rel="stylesheet" data-href="https://github.githubassets.com/assets/dark_dimmed_high_contrast-e3802beb8c06.css" />
<link crossorigin="anonymous" media="all" rel="stylesheet" href="https://github.githubassets.com/assets/primer-primitives-225433424a87.css" />
<link crossorigin="anonymous" media="all" rel="stylesheet" href="https://github.githubassets.com/assets/primer-b4bd0459f984.css" />
<link crossorigin="anonymous" media="all" rel="stylesheet" href="https://github.githubassets.com/assets/global-46e30a0a488d.css" />
<link crossorigin="anonymous" media="all" rel="stylesheet" href="https://github.githubassets.com/assets/github-ef14fd9f242b.css" />
<link crossorigin="anonymous" media="all" rel="stylesheet" href="https://github.githubassets.com/assets/repository-fa462f1c51f1.css" />
<script type="application/json" id="client-env">{"locale":"en","featureFlags":["alternate_user_config_repo","api_insights_show_missing_data_banner","appearance_settings","code_scanning_ref_selector","codespaces_prebuild_region_target_update","contact_requests_implicit_opt_in","contentful_lp_flex_features","contentful_lp_footnotes","contentful_lp_form_phone_e164","copilot_chat_attach_multiple_images","copilot_chat_autocomplete","copilot_chat_custom_instructions","copilot_chat_repo_custom_instructions_preview","copilot_chat_vision_in_claude","copilot_chat_wholearea_dd","copilot_custom_copilots_feature_preview","copilot_duplicate_thread","copilot_free_to_paid_telem","copilot_ftp_settings_upgrade","copilot_ftp_upgrade_to_pro_from_models","copilot_ftp_your_copilot_settings","copilot_immersive_draft_issue_template_required","copilot_immersive_issue_preview","copilot_immersive_structured_model_picker","copilot_new_conversation_starters","copilot_new_immersive_references_ui","copilot_no_floating_button","copilot_premium_request_quotas","copilot_read_shared_conversation","copilot_showcase_icebreakers","copilot_stable_subthreading_helpers","copilot_task_oriented_assistive_prompts","copilot_topics_as_references","copilot_workbench_iterate_panel","copilot_workbench_preview_analytics","copilot_workbench_refresh_on_wsod","copilot_workbench_user_limits","custom_copilots_capi_mode","direct_to_salesforce","dotcom_chat_client_side_skills","failbot_report_error_react_apps_on_page","ghost_pilot_confidence_truncation_25","ghost_pilot_confidence_truncation_40","insert_before_patch","issues_preserve_tokens_in_urls","issues_react_blur_item_picker_on_close","issues_react_bots_timeline_pagination","issues_react_create_milestone","issues_react_prohibit_title_fallback","issues_react_remove_placeholders","lifecycle_label_name_updates","link_contact_sales_swp_marketo","marketing_pages_search_explore_provider","memex_mwl_filter_field_delimiter","nonreporting_relay_graphql_status_codes","primer_primitives_experimental","primer_react_css_modules_ga","primer_react_select_panel_with_modern_action_list","remove_child_patch","sample_network_conn_type","sanitize_nested_mathjax_macros","site_homepage_contentful","site_msbuild_hide_integrations","site_msbuild_launch","site_msbuild_webgl_hero","spark_auth_token_endpoint","spark_commit_on_default_branch","swp_enterprise_contact_form","use_copilot_avatar","use_paginated_repo_picker_cost_center_form"]}</script>
<script crossorigin="anonymous" type="application/javascript" src="https://github.githubassets.com/assets/high-contrast-cookie-a58297b2ebf8.js"></script>
<script crossorigin="anonymous" type="application/javascript" src="https://github.githubassets.com/assets/wp-runtime-8b7acd600d83.js" defer="defer"></script>
<script crossorigin="anonymous" type="application/javascript" src="https://github.githubassets.com/assets/vendors-node_modules_oddbird_popover-polyfill_dist_popover-fn_js-a8c266e5f126.js" defer="defer"></script>
<script crossorigin="anonymous" type="application/javascript" src="https://github.githubassets.com/assets/vendors-node_modules_github_mini-throttle_dist_index_js-node_modules_stacktrace-parser_dist_s-1d3d52-babac9434833.js" defer="defer"></script>
<script crossorigin="anonymous" type="application/javascript" src="https://github.githubassets.com/assets/ui_packages_failbot_failbot_ts-7cc3ec44644a.js" defer="defer"></script>
<script crossorigin="anonymous" type="application/javascript" src="https://github.githubassets.com/assets/environment-89128d48c6ff.js" defer="defer"></script>
<script crossorigin="anonymous" type="application/javascript" src="https://github.githubassets.com/assets/vendors-node_modules_primer_behaviors_dist_esm_index_mjs-c44edfed7f0d.js" defer="defer"></script>
<script crossorigin="anonymous" type="application/javascript" src="https://github.githubassets.com/assets/vendors-node_modules_github_selector-observer_dist_index_esm_js-cdf2757bd188.js" defer="defer"></script>
<script crossorigin="anonymous" type="application/javascript" src="https://github.githubassets.com/assets/vendors-node_modules_github_relative-time-element_dist_index_js-5913bc24f35d.js" defer="defer"></script>
<script crossorigin="anonymous" type="application/javascript" src="https://github.githubassets.com/assets/vendors-node_modules_github_text-expander-element_dist_index_js-e50fb7a5fe8c.js" defer="defer"></script>
<script crossorigin="anonymous" type="application/javascript" src="https://github.githubassets.com/assets/vendors-node_modules_github_auto-complete-element_dist_index_js-node_modules_github_catalyst_-8e9f78-c1e2fb329866.js" defer="defer"></script>文档
Neo4j 向量集成文档可在Spring AI 参考指南中找到。
入门套件
在任何新的技术领域开始都可能令人生畏。Neo4j 一直致力于为生成式 AI 和 Neo4j 提供一些预打包解决方案，希望通过提供包含 Spring AI 等关键技术的入门套件项目来简化此过程。您可以在 Github 上找到 Spring AI 入门套件代码，以及一篇包含更多信息的博客文章。