1.引入依赖

<dependency>
    <groupId>dev.langchain4j</groupId>
    <artifactId>langchain4j-open-ai-spring-boot-starter</artifactId>
    <version>1.0.0-beta3</version>
</dependency>

<dependency>
    <groupId>dev.langchain4j</groupId>
    <artifactId>langchain4j-spring-boot-starter</artifactId>
    <version>1.0.0-beta3</version>
</dependency>

2.声明用于封装聊天方法的接口

package com.shenma.service;

/**
 * @author 军哥
 * @version 1.0
 * @description: 声明用于封装聊天方法的接口
 * @date 2026/4/3 16:05
 */


public interface ConsultantService {
    //用于聊天的方法,message为用户输入的内容
    public String chat(String message);
}

3.使用AiServices为接口创建代理对象

package com.shenma.config;

import com.shenma.service.ConsultantService;
import dev.langchain4j.model.openai.OpenAiChatModel;
import dev.langchain4j.service.AiServices;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * @author 军哥
 * @version 1.0
 * @description: TODO
 * @date 2026/4/3 16:06
 */

@Configuration
public class CommonConfig {
    @Autowired
    private OpenAiChatModel model;
    /**
     * @description: 创建一个咨询师服务
     * @params []
     * @return com.shenma.service.ConsultantService
     * @author 军哥
     * @date 2026/4/3 16:07
     */
    @Bean
    public ConsultantService consultantService() {

        //创建AIService
        ConsultantService cs = AiServices.create(ConsultantService.class, model);

        return cs;
    }
}

4.在controller中注入并使用

这里的consultantService是我们创建的代理对象。

package com.shenma.controller;

import com.shenma.service.ConsultantService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

/**
 * @author 军哥
 * @version 1.0
 * @description: TODO
 * @date 2026/4/3 16:16
 */

@RestController
@RequestMapping("/chat")
public class ChatController {

    @Autowired
    private ConsultantService consultantService;

    @PostMapping("/chat")
    public String chat(@RequestParam("message") String message){
        String result = consultantService.chat(message);
        return result;
    }

}

5.运行效果

源码仓库

https://gitee.com/ywbingchuan/server-ai-demo/tree/master/demo-ai-services