在Spring Boot系统中接入DeepSeek服务,并将其提供给用户使用,通常需要以下步骤:


一、准备工作

  1. 注册DeepSeek开发者账号

  2. 确认API文档

    • 查阅DeepSeek的API文档,了解接口地址、请求参数和返回格式。
  3. Spring Boot项目

    • 确保已有一个Spring Boot项目,或者创建一个新的Spring Boot项目。

二、集成步骤

1. 添加依赖

pom.xml中添加HTTP客户端依赖(如RestTemplateWebClient):

<dependencies>
    <!-- Spring Boot Starter Web -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <!-- Spring Boot Starter WebFlux (可选,用于WebClient) -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-webflux</artifactId>
    </dependency>

    <!-- Lombok (可选,简化代码) -->
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <scope>provided</scope>
    </dependency>
</dependencies>

2. 配置API Key

application.propertiesapplication.yml中配置DeepSeek的API Key:

# application.properties
deepseek.api.key=your_api_key
deepseek.api.url=https://api.deepseek.com/v1/chat/completions

3. 创建API请求类

定义一个Java类来表示DeepSeek API的请求体和响应体:

import lombok.Data;

@Data
public class DeepSeekRequest {
    private String model;
    private List<Message> messages;

    @Data
    public static class Message {
        private String role;
        private String content;
    }
}

@Data
public class DeepSeekResponse {
    private List<Choice> choices;

    @Data
    public static class Choice {
        private Message message;

        @Data
        public static class Message {
            private String role;
            private String content;
        }
    }
}

4. 创建服务类

编写一个服务类来调用DeepSeek API:

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.web.client.RestTemplate;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.ResponseEntity;

@Service
public class DeepSeekService {

    @Value("${deepseek.api.key}")
    private String apiKey;

    @Value("${deepseek.api.url}")
    private String apiUrl;

    private final RestTemplate restTemplate = new RestTemplate();

    public String callDeepSeek(String userMessage) {
        // 设置请求头
        HttpHeaders headers = new HttpHeaders();
        headers.set("Content-Type", "application/json");
        headers.set("Authorization", "Bearer " + apiKey);

        // 构建请求体
        DeepSeekRequest request = new DeepSeekRequest();
        request.setModel("deepseek-chat");
        request.setMessages(List.of(new DeepSeekRequest.Message("user", userMessage)));

        // 发送请求
        HttpEntity<DeepSeekRequest> entity = new HttpEntity<>(request, headers);
        ResponseEntity<DeepSeekResponse> response = restTemplate.exchange(
                apiUrl, HttpMethod.POST, entity, DeepSeekResponse.class);

        // 解析响应
        if (response.getStatusCode().is2xxSuccessful() && response.getBody() != null) {
            return response.getBody().getChoices().get(0).getMessage().getContent();
        } else {
            throw new RuntimeException("Failed to call DeepSeek API: " + response.getStatusCode());
        }
    }
}

5. 创建控制器

编写一个控制器来暴露API给前端或客户端:

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

@RestController
@RequestMapping("/api/deepseek")
public class DeepSeekController {

    @Autowired
    private DeepSeekService deepSeekService;

    @PostMapping("/chat")
    public String chat(@RequestParam String message) {
        return deepSeekService.callDeepSeek(message);
    }
}

6. 测试接口

启动Spring Boot应用后,可以使用Postman或curl测试接口:

curl -X POST "http://localhost:8080/api/deepseek/chat?message=你好,请介绍一下深度求索"

三、优化与扩展

  1. 异步调用
    使用WebClient替代RestTemplate,支持异步非阻塞调用:

    import org.springframework.web.reactive.function.client.WebClient;
    import reactor.core.publisher.Mono;
    
    @Service
    public class DeepSeekService {
    
        private final WebClient webClient;
    
        public DeepSeekService(@Value("${deepseek.api.url}") String apiUrl,
                               @Value("${deepseek.api.key}") String apiKey) {
            this.webClient = WebClient.builder()
                .baseUrl(apiUrl)
                .defaultHeader("Authorization", "Bearer " + apiKey)
                .build();
        }
    
        public Mono<String> callDeepSeek(String userMessage) {
            DeepSeekRequest request = new DeepSeekRequest();
            request.setModel("deepseek-chat");
            request.setMessages(List.of(new DeepSeekRequest.Message("user", userMessage)));
    
            return webClient.post()
                .contentType(MediaType.APPLICATION_JSON)
                .bodyValue(request)
                .retrieve()
                .bodyToMono(DeepSeekResponse.class)
                .map(response -> response.getChoices().get(0).getMessage().getContent());
        }
    }
    
  2. 异常处理
    添加全局异常处理:

    @RestControllerAdvice
    public class GlobalExceptionHandler {
    
        @ExceptionHandler(RuntimeException.class)
        public ResponseEntity<String> handleRuntimeException(RuntimeException ex) {
            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(ex.getMessage());
        }
    }
    
  3. 限流与缓存

    • 使用Spring Boot Actuator监控API调用频率
    • 使用Spring Cache缓存常见请求结果

四、部署与上线

  1. 打包应用

    mvn clean package
    
  2. 部署到服务器

    • 使用Docker容器化部署
    • 使用java -jar直接运行
  3. 配置Nginx反向代理

    • 配置HTTPS
    • 设置负载均衡

通过以上步骤,可以在Spring Boot系统中成功接入DeepSeek服务,并将其提供给客户使用。如果有更复杂的需求(如私有化部署或定制模型),可以联系DeepSeek团队获取支持。

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