如何使用Java實(shí)現(xiàn)請求deepseek

更新時間：2025年02月21日 09:50:55 作者：不斷的成長

這篇文章主要為大家詳細(xì)介紹了如何使用Java實(shí)現(xiàn)請求deepseek功能,文中的示例代碼講解詳細(xì),感興趣的小伙伴可以跟隨小編一起學(xué)習(xí)一下

1.deepseek的api創(chuàng)建

deepseek官網(wǎng)鏈接

點(diǎn)擊右上API開放平臺后找到API keys 創(chuàng)建APIkey：

注意：創(chuàng)建好的apikey只能在創(chuàng)建時可以復(fù)制，要保存好

2.java實(shí)現(xiàn)請求deepseek

使用springboot+maven

2.1 pom文件

<?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>3.4.2</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.demo</groupId>
    <artifactId>deepseek-java</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>deepseek-java</name>
    <description>Demo project for Spring Boot</description>
 
    <properties>
        <java.version>21</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
 
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
 
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <version>RELEASE</version>
            <scope>compile</scope>
        </dependency>
 
        <dependency>
            <groupId>org.json</groupId>
            <artifactId>json</artifactId>
            <version>20231013</version>
        </dependency>
 
        <dependency>
            <groupId>com.squareup.okhttp3</groupId>
            <artifactId>okhttp</artifactId>
            <version>4.12.0</version>
        </dependency>
 
 
    </dependencies>
 
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
 
    <repositories>
        <repository>
            <id>maven-ali</id>
            <url>http://maven.aliyun.com/nexus/content/groups/public//</url>
            <releases>
                <enabled>true</enabled>
            </releases>
            <snapshots>
                <enabled>true</enabled>
                <updatePolicy>always</updatePolicy>
                <checksumPolicy>fail</checksumPolicy>
            </snapshots>
        </repository>
    </repositories>
 
    <pluginRepositories>
        <pluginRepository>
            <id>public</id>
            <name>aliyun nexus</name>
            <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
            <releases>
                <enabled>true</enabled>
            </releases>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories>
 
</project>

2.2 json轉(zhuǎn)化文件

參數(shù)可以參考DeepSeek API 文檔

import org.json.JSONArray;
import org.json.JSONObject;
 
/**
 * @Description:自定義json轉(zhuǎn)化
 * @Author:
 * @Date: 2025/2/20
 * @Version: v1.0
 */
public class JsonExample {
    /**
     * toJson
     * @param msg 你要輸入的內(nèi)容
     * @param model 模型類型 例如 deepseek-chat、deepseek-reasoner
     * @return 組裝好的json數(shù)據(jù)
     */
    public static String toJson(String msg,String model){
        // 創(chuàng)建JSON對象
        JSONObject json = new JSONObject();
 
        // 創(chuàng)建messages數(shù)組
        JSONArray messages = new JSONArray();
 
        // 添加第一個message
        JSONObject systemMessage = new JSONObject();
        systemMessage.put("content", "You are a helpful assistant");
        systemMessage.put("role", "system");
        messages.put(systemMessage);
 
        // 添加第二個message
        JSONObject userMessage = new JSONObject();
        userMessage.put("content", msg);
        userMessage.put("role", "user");
        messages.put(userMessage);
 
        // 將messages數(shù)組添加到JSON對象
        json.put("messages", messages);
 
        // 添加其他字段
        json.put("model", model);
        json.put("frequency_penalty", 0);
        json.put("max_tokens", 2048);
        json.put("presence_penalty", 0);
 
        // 添加response_format對象
        JSONObject responseFormat = new JSONObject();
        responseFormat.put("type", "text");
        json.put("response_format", responseFormat);
 
        // 添加其他字段
        json.put("stop", JSONObject.NULL);
        json.put("stream", false);
        json.put("stream_options", JSONObject.NULL);
        json.put("temperature", 1);
        json.put("top_p", 1);
        json.put("tools", JSONObject.NULL);
        json.put("tool_choice", "none");
        json.put("logprobs", false);
        json.put("top_logprobs", JSONObject.NULL);
 
        // 控制臺打印輸出JSON字符串并且使用2個空格進(jìn)行縮進(jìn)
       //System.out.println(json.toString(2));
        return json.toString();
    }
}

轉(zhuǎn)化后JSON如下：

{
  "messages": [
    {
      "content": "You are a helpful assistant",
      "role": "system"
    },
    {
      "content": "Hi",
      "role": "user"
    }
  ],
  "model": "deepseek-chat",
  "frequency_penalty": 0,
  "max_tokens": 2048,
  "presence_penalty": 0,
  "response_format": {
    "type": "text"
  },
  "stop": null,
  "stream": false,
  "stream_options": null,
  "temperature": 1,
  "top_p": 1,
  "tools": null,
  "tool_choice": "none",
  "logprobs": false,
  "top_logprobs": null
}

2.2 實(shí)現(xiàn)類

import okhttp3.*;
 
import java.io.IOException;
 
/**
 * @Description:
 * @Author:
 * @Date: 2025/2/20
 * @Version: v1.0
 */
public class MyDeepSeekClient {
 
    private static final String API_URL = "https://api.deepseek.com/chat/completions"; // 替換為實(shí)際的API URL
    private static final String API_KEY = "你的APIkey"; // 替換為實(shí)際的API密鑰
 
 
    public static void main(String[] args) {
        try {
            String json = JsonExample.toJson("你好", "deepseek-chat");
            OkHttpClient client = new OkHttpClient().newBuilder()
                    .build();
            MediaType mediaType = MediaType.parse("application/json");
            RequestBody body = RequestBody.create(mediaType, json);
            Request request = new Request.Builder()
                    .url(API_URL)//deepseek的API
                    .method("POST", body)
                    .addHeader("Content-Type", "application/json")
                    .addHeader("Accept", "application/json")
                    .addHeader("Authorization", "Bearer "+API_KEY)//deepseek的API_KEY
                    .build();
            // 異步發(fā)送 POST 請求
            client.newCall(request).enqueue(new Callback() {
                @Override
                public void onFailure(Call call, IOException e) {
                    e.printStackTrace();
                }
 
                @Override
                public void onResponse(Call call, Response response) throws IOException {
                    try {
                        if (response.isSuccessful()) {//判斷響應(yīng)是否成功
                            // 成功
                            System.out.println("狀態(tài)碼: " + response.code());
                            System.out.println("響應(yīng)體: " + response.body().string());
                        } else {
                            // 失敗
                            System.out.println("狀態(tài)碼: " + response.code());
                            System.out.println("響應(yīng)體: " + response.body().string());
                        }
                    } finally {
                        // 關(guān)閉響應(yīng)體，防止資源泄漏
                        response.close();
                    }
                }
            });
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

輸入結(jié)果如下：

狀態(tài)碼: 200
響應(yīng)體: {"id":"6d83333a-ac8e-4ebf-9030-dc4e5ec620a3","object":"chat.completion","created":1740040067,"model":"deepseek-chat","choices":[{"index":0,"message":{"role":"assistant","content":"你好！很高興見到你。有什么我可以幫忙的嗎？"},"logprobs":null,"finish_reason":"stop"}],"usage":{"prompt_tokens":9,"completion_tokens":11,"total_tokens":20,"prompt_tokens_details":{"cached_tokens":0},"prompt_cache_hit_tokens":0,"prompt_cache_miss_tokens":9},"system_fingerprint":"fp_3a5770e1b4"}

注意事項(xiàng)：

響應(yīng)體大小：如果響應(yīng)體較大，直接調(diào)用responseBody.string()可能會占用大量內(nèi)存。對于大文件或流式數(shù)據(jù)，可以使用responseBody.byteStream()或responseBody.charStream()。

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