讯飞星火大模型api调用

讯飞星火大模型，通过websocket方式通信传递协议要求的报文，然后将流式返回的报文拼接为完整的响应内容，status=2时是最后一条消息。因为是websocket方式所以是异步响应的，如果想要同步需要使用CountDownLatch控制下线程等待最后一条消息处理完再继续往下走。星火不同版本稍微有一些差异，具体以官网提供的demo为准。

具体步骤：

首先,需要在公网创建应用，然后查看服务接口认证信息APPID、APISecret、APIKey、URL。

https://console.xfyun.cn/services/bm3

点应用名称进去查看详情

然后，点“文档”查看报文协议，可以下载调用示例，使用Java代码调用星火api：

https://www.xfyun.cn/doc/spark/Web.html

下面仅仅是个示例，具体代码要根据官网最新文档确定。注意domain在1.5，2，3版本分别传general,generalv2,generalv3，传错了会报错10404。另外如果想同步返回结果，需要自己使用CountDownLatch控制主线程等待一段时间 countDownLatch.await(30000, TimeUnit.MILLISECONDS); 这样会在指定的最大超时时间内等待。

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.google.gson.Gson;
import okhttp3.*;import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import java.io.IOException;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.text.SimpleDateFormat;
import java.util.*;/*** 带历史会话的示例*/
public class BigModelNew extends WebSocketListener {// 地址与鉴权信息  https://spark-api.xf-yun.com/v1.1/chat   1.5地址  domain参数为general// 地址与鉴权信息  https://spark-api.xf-yun.com/v2.1/chat   2.0地址  domain参数为generalv2public static final String hostUrl = "https://spark-api.xf-yun.com/v1/chat";public static final String appid = "1234";public static final String apiSecret = "xxxxx";public static final String apiKey = "xxxxxxxxxx";public static final String domain = "general"; //1.5，2，3版本分别传general,generalv2,generalv3，传错了会报错10404public static List<RoleContent> historyList=new ArrayList<>(); // 对话历史存储集合public static String totalAnswer=""; // 大模型的答案汇总// 环境治理的重要性  环保  人口老龄化  我爱我的祖国public static  String NewQuestion = "";public static final Gson gson = new Gson();// 个性化参数private String userId;private Boolean wsCloseFlag;private static Boolean totalFlag=true; // 控制提示用户是否输入// 构造函数public BigModelNew(String userId, Boolean wsCloseFlag) {this.userId = userId;this.wsCloseFlag = wsCloseFlag;}// 主函数public static void main(String[] args) throws Exception {// 个性化参数入口，如果是并发使用，可以在这里模拟while (true){if(totalFlag){Scanner scanner=new Scanner(System.in);System.out.print("我：");totalFlag=false;NewQuestion=scanner.nextLine();// 构建鉴权urlString authUrl = getAuthUrl(hostUrl, apiKey, apiSecret);OkHttpClient client = new OkHttpClient.Builder().build();String url = authUrl.toString().replace("http://", "ws://").replace("https://", "wss://");Request request = new Request.Builder().url(url).build();for (int i = 0; i < 1; i++) {totalAnswer="";WebSocket webSocket = client.newWebSocket(request, new BigModelNew(i + "",false));}}else{Thread.sleep(200);}}}public static boolean canAddHistory(){  // 由于历史记录最大上线1.2W左右，需要判断是能能加入历史int history_length=0;for(RoleContent temp:historyList){history_length=history_length+temp.content.length();}if(history_length>12000){historyList.remove(0);historyList.remove(1);historyList.remove(2);historyList.remove(3);historyList.remove(4);return false;}else{return true;}}// 线程来发送音频与参数class MyThread extends Thread {private WebSocket webSocket;public MyThread(WebSocket webSocket) {this.webSocket = webSocket;}public void run() {try {JSONObject requestJson=new JSONObject();JSONObject header=new JSONObject();  // header参数header.put("app_id",appid);header.put("uid",UUID.randomUUID().toString().substring(0, 10));JSONObject parameter=new JSONObject(); // parameter参数JSONObject chat=new JSONObject();chat.put("domain", domain);chat.put("temperature",0.5);chat.put("max_tokens",4096);parameter.put("chat",chat);JSONObject payload=new JSONObject(); // payload参数JSONObject message=new JSONObject();JSONArray text=new JSONArray();// 历史问题获取if(historyList.size()>0){for(RoleContent tempRoleContent:historyList){text.add(JSON.toJSON(tempRoleContent));}}// 最新问题RoleContent roleContent=new RoleContent();roleContent.role="user";roleContent.content=NewQuestion;text.add(JSON.toJSON(roleContent));historyList.add(roleContent);message.put("text",text);payload.put("message",message);requestJson.put("header",header);requestJson.put("parameter",parameter);requestJson.put("payload",payload);// System.err.println(requestJson); // 可以打印看每次的传参明细webSocket.send(requestJson.toString());// 等待服务端返回完毕后关闭while (true) {// System.err.println(wsCloseFlag + "---");Thread.sleep(200);if (wsCloseFlag) {break;}}webSocket.close(1000, "");} catch (Exception e) {e.printStackTrace();}}}@Overridepublic void onOpen(WebSocket webSocket, Response response) {super.onOpen(webSocket, response);System.out.print("大模型：");MyThread myThread = new MyThread(webSocket);myThread.start();}@Overridepublic void onMessage(WebSocket webSocket, String text) {// System.out.println(userId + "用来区分那个用户的结果" + text);JsonParse myJsonParse = gson.fromJson(text, JsonParse.class);if (myJsonParse.header.code != 0) {System.out.println("发生错误，错误码为：" + myJsonParse.header.code);System.out.println("本次请求的sid为：" + myJsonParse.header.sid);webSocket.close(1000, "");}List<Text> textList = myJsonParse.payload.choices.text;for (Text temp : textList) {System.out.print(temp.content);totalAnswer=totalAnswer+temp.content;}if (myJsonParse.header.status == 2) {// 可以关闭连接，释放资源System.out.println();System.out.println("*************************************************************************************");if(canAddHistory()){RoleContent roleContent=new RoleContent();roleContent.setRole("assistant");roleContent.setContent(totalAnswer);historyList.add(roleContent);}else{historyList.remove(0);RoleContent roleContent=new RoleContent();roleContent.setRole("assistant");roleContent.setContent(totalAnswer);historyList.add(roleContent);}wsCloseFlag = true;totalFlag=true;}}@Overridepublic void onFailure(WebSocket webSocket, Throwable t, Response response) {super.onFailure(webSocket, t, response);try {if (null != response) {int code = response.code();System.out.println("onFailure code:" + code);System.out.println("onFailure body:" + response.body().string());if (101 != code) {System.out.println("connection failed");System.exit(0);}}} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}// 鉴权方法public static String getAuthUrl(String hostUrl, String apiKey, String apiSecret) throws Exception {URL url = new URL(hostUrl);// 时间SimpleDateFormat format = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss z", Locale.US);format.setTimeZone(TimeZone.getTimeZone("GMT"));String date = format.format(new Date());// 拼接String preStr = "host: " + url.getHost() + "\n" +"date: " + date + "\n" +"GET " + url.getPath() + " HTTP/1.1";// System.err.println(preStr);// SHA256加密Mac mac = Mac.getInstance("hmacsha256");SecretKeySpec spec = new SecretKeySpec(apiSecret.getBytes(StandardCharsets.UTF_8), "hmacsha256");mac.init(spec);byte[] hexDigits = mac.doFinal(preStr.getBytes(StandardCharsets.UTF_8));// Base64加密String sha = Base64.getEncoder().encodeToString(hexDigits);// System.err.println(sha);// 拼接String authorization = String.format("api_key=\"%s\", algorithm=\"%s\", headers=\"%s\", signature=\"%s\"", apiKey, "hmac-sha256", "host date request-line", sha);// 拼接地址HttpUrl httpUrl = Objects.requireNonNull(HttpUrl.parse("https://" + url.getHost() + url.getPath())).newBuilder().//addQueryParameter("authorization", Base64.getEncoder().encodeToString(authorization.getBytes(StandardCharsets.UTF_8))).//addQueryParameter("date", date).//addQueryParameter("host", url.getHost()).//build();// System.err.println(httpUrl.toString());return httpUrl.toString();}//返回的json结果拆解class JsonParse {Header header;Payload payload;}class Header {int code;int status;String sid;}class Payload {Choices choices;}class Choices {List<Text> text;}class Text {String role;String content;}class RoleContent{String role;String content;public String getRole() {return role;}public void setRole(String role) {this.role = role;}public String getContent() {return content;}public void setContent(String content) {this.content = content;}}
}

pom.xml

<?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><groupId>org.example</groupId><artifactId>big_model</artifactId><version>1.0-SNAPSHOT</version><build><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><configuration><source>8</source><target>8</target></configuration></plugin></plugins></build><properties><java.version>1.8</java.version></properties><dependencies><!-- https://mvnrepository.com/artifact/com.alibaba/fastjson --><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.67</version></dependency><!-- https://mvnrepository.com/artifact/com.google.code.gson/gson --><dependency><groupId>com.google.code.gson</groupId><artifactId>gson</artifactId><version>2.8.5</version></dependency><!-- https://mvnrepository.com/artifact/org.java-websocket/Java-WebSocket --><dependency><groupId>org.java-websocket</groupId><artifactId>Java-WebSocket</artifactId><version>1.3.8</version></dependency><!-- https://mvnrepository.com/artifact/com.squareup.okhttp3/okhttp --><dependency><groupId>com.squareup.okhttp3</groupId><artifactId>okhttp</artifactId><version>4.10.0</version></dependency><!-- https://mvnrepository.com/artifact/com.squareup.okio/okio --><dependency><groupId>com.squareup.okio</groupId><artifactId>okio</artifactId><version>2.10.0</version></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>RELEASE</version><scope>compile</scope></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId><version>1.7.25</version></dependency></dependencies></project>

# Global logging configuration
log4j.rootLogger=DEBUG, stdout
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n