学习langChain4j的第二天，体验springBoot中的starter

水巷石子2026-09-08 12:15

1.创建maven项目（略，记得是web项目就行）

2.添加对应springboot中的starter启动类

3.添加对应配置信息

4.写对应的测试controller方法

5.访问结果

完整代码：

TestController

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package com.lbl.langchain4jdemo03.controller;

import dev.langchain4j.model.openai.OpenAiChatModel;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;


/**
 * @ClassName : TestController
 * @Author : libolin
 * @Date: 2026/9/7  09:18
 */
@RestController
@RequestMapping("/test")
public class TestController {

    private final OpenAiChatModel chatModel;

    public TestController(OpenAiChatModel chatModel) {
        this.chatModel = chatModel;
    }

    @GetMapping("/chat")
    public String chat(@RequestParam(value = "message", defaultValue = "你好，请做个自我介绍") String message) {
        return chatModel.chat(message);
    }
}

yml

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spring:
  application:
    name: langChain4jDemo03

langchain4j:
  open-ai:
    chat-model:
      api-key: ${API_KEY}
      base-url: ${BASE_URL}
      model-name: ${MODEL_NAME}
      log-requests: true
      log-responses: true

pom.xml

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        <dependency>
            <groupId>dev.langchain4j</groupId>
            <artifactId>langchain4j-spring-boot4-starter</artifactId>
            <version>${langchain4j.version}</version>
        </dependency>

        <dependency>
            <groupId>dev.langchain4j</groupId>
            <artifactId>langchain4j-open-ai-spring-boot4-starter</artifactId>
            <version>${langchain4j.version}</version>
        </dependency>
    </dependencies>