Initial commit

langchain4j-ai-stream/src/main/java/com/iweb/langchain4j/controller/StreamController.java

@@ -0,0 +1,57 @@
+package com.iweb.langchain4j.controller;
+
+import com.iweb.langchain4j.service.ChatAssistant;
+import dev.langchain4j.model.chat.StreamingChatModel;
+import dev.langchain4j.model.chat.response.ChatResponse;
+import dev.langchain4j.model.chat.response.StreamingChatResponseHandler;
+import jakarta.annotation.Resource;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+import reactor.core.publisher.Flux;
+
+@RestController
+@Slf4j
+public class StreamController {
+
+    @Resource //直接使用 low-level LLM API
+    private StreamingChatModel chatModelQwen;
+    @Resource //自己封装接口使用 high-level LLM API
+    private ChatAssistant chatAssistant;
+
+    // http://localhost:9006/lc4j/chatstream/chat2?prompt=我是谁？
+    @GetMapping(value = "/lc4j/chatstream/chat2")
+    public Flux<String> chat3(@RequestParam(value = "prompt", defaultValue = "你是谁？") String prompt) {
+        return chatAssistant.chatFlux(prompt);
+    }
+
+
+    // http://localhost:9006/lc4j/chatstream/chat?prompt=我是谁？
+    @GetMapping(value = "/lc4j/chatstream/chat")
+    public Flux<String> chat(@RequestParam("prompt") String prompt) {
+
+        return Flux.create(emitter -> {
+            chatModelQwen.chat(prompt, new StreamingChatResponseHandler()
+            {
+                @Override
+                public void onPartialResponse(String partialResponse)
+                {
+                    emitter.next(partialResponse);
+                }
+
+                @Override
+                public void onCompleteResponse(ChatResponse completeResponse)
+                {
+                    emitter.complete();
+                }
+
+                @Override
+                public void onError(Throwable throwable)
+                {
+                    emitter.error(throwable);
+                }
+            });
+        });
+    }
+}