From 4227b39d7a4fc6bc3ba012a09b59f653ab92ab23 Mon Sep 17 00:00:00 2001
From: Junjie <DELL@qq.com>
Date: 星期一, 15 十二月 2025 16:40:54 +0800
Subject: [PATCH] #
---
src/main/java/com/zy/ai/service/LlmChatService.java | 180 +++++++++++++++++++++++++++++++++++++++++++++++++++++-------
1 files changed, 159 insertions(+), 21 deletions(-)
diff --git a/src/main/java/com/zy/ai/service/LlmChatService.java b/src/main/java/com/zy/ai/service/LlmChatService.java
index 0736951..d599775 100644
--- a/src/main/java/com/zy/ai/service/LlmChatService.java
+++ b/src/main/java/com/zy/ai/service/LlmChatService.java
@@ -14,6 +14,9 @@
import java.util.List;
import java.util.function.Consumer;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicBoolean;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
@@ -43,14 +46,20 @@
req.setMessages(messages);
req.setTemperature(temperature != null ? temperature : 0.3);
req.setMax_tokens(maxTokens != null ? maxTokens : 1024);
+ req.setStream(false);
ChatCompletionResponse response = llmWebClient.post()
.uri("/chat/completions")
.header(HttpHeaders.AUTHORIZATION, "Bearer " + apiKey)
.contentType(MediaType.APPLICATION_JSON)
+ .accept(MediaType.APPLICATION_JSON, MediaType.TEXT_EVENT_STREAM)
.bodyValue(req)
- .retrieve()
- .bodyToMono(ChatCompletionResponse.class)
+ .exchangeToMono(resp -> resp.bodyToFlux(String.class)
+ .collectList()
+ .map(list -> {
+ String payload = String.join("\n\n", list);
+ return parseCompletion(payload);
+ }))
.doOnError(ex -> log.error("璋冪敤 LLM 澶辫触", ex))
.onErrorResume(ex -> Mono.empty())
.block();
@@ -58,9 +67,10 @@
if (response == null ||
response.getChoices() == null ||
response.getChoices().isEmpty() ||
- response.getChoices().get(0).getMessage() == null) {
-
- return "AI 璇婃柇澶辫触锛氭湭鑾峰彇鍒版湁鏁堝洖澶嶃��";
+ response.getChoices().get(0).getMessage() == null ||
+ response.getChoices().get(0).getMessage().getContent() == null ||
+ response.getChoices().get(0).getMessage().getContent().isEmpty()) {
+ return null;
}
return response.getChoices().get(0).getMessage().getContent();
@@ -80,7 +90,6 @@
req.setMax_tokens(maxTokens != null ? maxTokens : 1024);
req.setStream(true);
- System.out.println(JSON.toJSONString(req));
Flux<String> flux = llmWebClient.post()
.uri("/chat/completions")
@@ -92,35 +101,164 @@
.bodyToFlux(String.class)
.doOnError(ex -> log.error("璋冪敤 LLM 娴佸紡澶辫触", ex));
+ AtomicBoolean doneSeen = new AtomicBoolean(false);
+ AtomicBoolean errorSeen = new AtomicBoolean(false);
+ LinkedBlockingQueue<String> queue = new LinkedBlockingQueue<>();
+
+ Thread drain = new Thread(() -> {
+ try {
+ while (true) {
+ String s = queue.poll(2, TimeUnit.SECONDS);
+ if (s != null) {
+ try { onChunk.accept(s); } catch (Exception ignore) {}
+ }
+ if (doneSeen.get() && queue.isEmpty()) {
+ if (!errorSeen.get()) {
+ try { if (onComplete != null) onComplete.run(); } catch (Exception ignore) {}
+ }
+ break;
+ }
+ }
+ } catch (InterruptedException ignore) {
+ ignore.printStackTrace();
+ }
+ });
+ drain.setDaemon(true);
+ drain.start();
+
flux.subscribe(payload -> {
- String s = payload;
- if (s == null || s.isEmpty()) return;
+ if (payload == null || payload.isEmpty()) return;
+ String[] events = payload.split("\\r?\\n\\r?\\n");
+ for (String part : events) {
+ String s = part;
+ if (s == null || s.isEmpty()) continue;
+ if (s.startsWith("data:")) {
+ s = s.substring(5);
+ if (s.startsWith(" ")) s = s.substring(1);
+ }
+ if ("[DONE]".equals(s.trim())) {
+ doneSeen.set(true);
+ continue;
+ }
+ try {
+ JSONObject obj = JSON.parseObject(s);
+ JSONArray choices = obj.getJSONArray("choices");
+ if (choices != null && !choices.isEmpty()) {
+ JSONObject c0 = choices.getJSONObject(0);
+ JSONObject delta = c0.getJSONObject("delta");
+ if (delta != null) {
+ String content = delta.getString("content");
+ if (content != null) {
+ try { queue.offer(content); } catch (Exception ignore) {}
+ }
+ }
+ }
+ } catch (Exception e) {
+ e.printStackTrace();
+ }
+ }
+ }, err -> {
+ errorSeen.set(true);
+ doneSeen.set(true);
+ if (onError != null) onError.accept(err);
+ }, () -> {
+ if (!doneSeen.get()) {
+ errorSeen.set(true);
+ doneSeen.set(true);
+ if (onError != null) onError.accept(new RuntimeException("LLM 娴佹剰澶栧畬鎴�"));
+ } else {
+ doneSeen.set(true);
+ }
+ });
+ }
+
+ private ChatCompletionResponse mergeSseChunk(ChatCompletionResponse acc, String payload) {
+ if (payload == null || payload.isEmpty()) return acc;
+ String[] events = payload.split("\\r?\\n\\r?\\n");
+ for (String part : events) {
+ String s = part;
+ if (s == null || s.isEmpty()) continue;
if (s.startsWith("data:")) {
s = s.substring(5);
if (s.startsWith(" ")) s = s.substring(1);
}
- // 淇濈暀妯″瀷杈撳嚭涓殑鎹㈣锛屽彧鍦ㄥ垽鏂粨鏉熸爣璁版椂蹇界暐绌虹櫧
- if ("[DONE]".equals(s.trim())) return;
+ if ("[DONE]".equals(s.trim())) {
+ continue;
+ }
try {
JSONObject obj = JSON.parseObject(s);
+ if (obj == null) continue;
JSONArray choices = obj.getJSONArray("choices");
if (choices != null && !choices.isEmpty()) {
JSONObject c0 = choices.getJSONObject(0);
+ if (acc.getChoices() == null || acc.getChoices().isEmpty()) {
+ ChatCompletionResponse.Choice choice = new ChatCompletionResponse.Choice();
+ ChatCompletionRequest.Message msg = new ChatCompletionRequest.Message();
+ choice.setMessage(msg);
+ java.util.ArrayList<ChatCompletionResponse.Choice> list = new java.util.ArrayList<>();
+ list.add(choice);
+ acc.setChoices(list);
+ }
+ ChatCompletionResponse.Choice choice = acc.getChoices().get(0);
+ ChatCompletionRequest.Message msg = choice.getMessage();
+ if (msg.getRole() == null || msg.getRole().isEmpty()) {
+ msg.setRole("assistant");
+ }
JSONObject delta = c0.getJSONObject("delta");
if (delta != null) {
- String content = delta.getString("content");
-// log.info("chunk = [{}] len = {}", content, content.length());
-// for (char ch : content.toCharArray()) {
-// log.info("char: {} ({})", (int) ch, ch == '\n' ? "\\n" : ch);
-// }
- if (content != null) onChunk.accept(content);
+ String c = delta.getString("content");
+ if (c != null) {
+ String prev = msg.getContent();
+ msg.setContent(prev == null ? c : prev + c);
+ }
+ String role = delta.getString("role");
+ if (role != null && !role.isEmpty()) msg.setRole(role);
}
+ JSONObject message = c0.getJSONObject("message");
+ if (message != null) {
+ String c = message.getString("content");
+ if (c != null) {
+ String prev = msg.getContent();
+ msg.setContent(prev == null ? c : prev + c);
+ }
+ String role = message.getString("role");
+ if (role != null && !role.isEmpty()) msg.setRole(role);
+ }
+ String fr = c0.getString("finish_reason");
+ if (fr != null && !fr.isEmpty()) choice.setFinishReason(fr);
}
+ String id = obj.getString("id");
+ if (id != null && !id.isEmpty()) acc.setId(id);
+ Long created = obj.getLong("created");
+ if (created != null) acc.setCreated(created);
+ String object = obj.getString("object");
+ if (object != null && !object.isEmpty()) acc.setObjectName(object);
} catch (Exception ignore) {}
- }, err -> {
- if (onError != null) onError.accept(err);
- }, () -> {
- if (onComplete != null) onComplete.run();
- });
+ }
+ return acc;
+ }
+
+ private ChatCompletionResponse parseCompletion(String payload) {
+ if (payload == null) return null;
+ try {
+ ChatCompletionResponse r = JSON.parseObject(payload, ChatCompletionResponse.class);
+ if (r != null && r.getChoices() != null && !r.getChoices().isEmpty() && r.getChoices().get(0).getMessage() != null) {
+ return r;
+ }
+ } catch (Exception ignore) {}
+ ChatCompletionResponse sse = mergeSseChunk(new ChatCompletionResponse(), payload);
+ if (sse.getChoices() != null && !sse.getChoices().isEmpty() && sse.getChoices().get(0).getMessage() != null && sse.getChoices().get(0).getMessage().getContent() != null) {
+ return sse;
+ }
+ ChatCompletionResponse r = new ChatCompletionResponse();
+ ChatCompletionResponse.Choice choice = new ChatCompletionResponse.Choice();
+ ChatCompletionRequest.Message msg = new ChatCompletionRequest.Message();
+ msg.setRole("assistant");
+ msg.setContent(payload);
+ choice.setMessage(msg);
+ java.util.ArrayList<ChatCompletionResponse.Choice> list = new java.util.ArrayList<>();
+ list.add(choice);
+ r.setChoices(list);
+ return r;
}
}
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