LLM + RAG 自有知識庫問答(SpringAI+Milvus)

背景：

現有大模型應用開發均以python為主要，最初OpenAI API開發時沒有java sdk支持。隨著技術進步以及Spring框架在AI領域的發展，出現已SpringAI方式快速與LLM對接集成，很多教程均不完整，故做整理。

• 1.SpringAI要求的運行環境jdk17+、Springboot3.x
• 2.OpenAI API調用key(或者Llama 3)
• 3.Milvus數據庫
• 4.文本或者文檔數據(Oracle、各類文檔)

一、SpringAI框架搭建

目的：構建Maven項目，環境jdk17、mybatis與通用mapper、Oracle連接工具、Milvus java sdk、ai框架等開發框架。

進入https://start.spring.io/構建基礎的maven項目

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>3.4.0</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.example</groupId>
	<artifactId>demo</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>demo</name>
	<description>AI project for Spring Boot</description>
	<url/>
	<licenses>
		<license/>
	</licenses>
	<developers>
		<developer/>
	</developers>
	<scm>
		<connection/>
		<developerConnection/>
		<tag/>
		<url/>
	</scm>
	<properties>
		<java.version>17</java.version>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    	<maven.compiler.target>17</maven.compiler.target>
		<maven.compiler.source>17</maven.compiler.source>
		<spring-ai.version>1.0.0-M4</spring-ai.version>
		<druid.version>1.2.21</druid.version>
	</properties>
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
			<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>druid</artifactId>
			<version>1.2.14</version>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-jdbc</artifactId>
		</dependency>
		
		    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
      
    </dependency>
    <dependency>
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-classic</artifactId>
      
    </dependency>
				
		 <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artif