1.deepseek的api创建
deepseek官网链接
点击右上API开放平台后找到API keys 创建APIkey：
注意：创建好的apikey只能在创建时可以复制，要保存好
2.java实现请求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转化文件：
参数可以参考DeepSeek API 文档
java">import org.json.JSONArray;
import org.json.JSONObject;
/**
* @Description:自定义json转化
* @Author:
* @Date: 2025/2/20
* @Version: v1.0
*/
public class JsonExample {
/**
* toJson
* @param msg 你要输入的内容
* @param model 模型类型 例如 deepseek-chat、deepseek-reasoner
* @return 组装好的json数据
*/
public static String toJson(String msg,String model){
// 创建JSON对象
JSONObject json = new JSONObject();
// 创建messages数组
JSONArray messages = new JSONArray();
// 添加第一个message
JSONObject systemMessage = new JSONObject();
systemMessage.put("content", "You are a helpful assistant");
systemMessage.put("role", "system");
messages.put(systemMessage);
// 添加第二个message
JSONObject userMessage = new JSONObject();
userMessage.put("content", msg);
userMessage.put("role", "user");
messages.put(userMessage);
// 将messages数组添加到JSON对象
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对象
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);
// 控制台打印输出JSON字符串并且使用2个空格进行缩进
//System.out.println(json.toString(2));
return json.toString();
}
}
转化后JSON如下：
java">{
"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 实现类：
java">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"; // 替换为实际的API URL
private static final String API_KEY = "你的APIkey"; // 替换为实际的API密钥
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();
// 异步发送 POST 请求
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()) {//判断响应是否成功
// 成功
System.out.println("状态码: " + response.code());
System.out.println("响应体: " + response.body().string());
} else {
// 失败
System.out.println("状态码: " + response.code());
System.out.println("响应体: " + response.body().string());
}
} finally {
// 关闭响应体，防止资源泄漏
response.close();
}
}
});
} catch (Exception e) {
e.printStackTrace();
}
}
}
输入结果如下：
java">状态码: 200
响应体: {"id":"6d83333a-ac8e-4ebf-9030-dc4e5ec620a3","object":"chat.completion","created":1740040067,"model":"deepseek-chat","choices":[{"index":0,"message":{"role":"assistant","content":"你好！很高兴见到你。有什么我可以帮忙的吗？"},"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"}注意事项：
-
响应体大小：如果响应体较大，直接调用
responseBody.string()可能会占用大量内存。对于大文件或流式数据，可以使用responseBody.byteStream()或responseBody.charStream()。
