feat(dashscope): 实现流式响应接口并返回AIResponse对象

- 新增AIResponse模型类用于封装流式响应内容- 修改DashScopeController以支持流式输出
- 将原有的chat方法改为generateStream方法
- 使用Prompt构建提示词并获取流式响应- 映射chatResponse到AIResponse对象- 添加@Slf4j注解以支持日志记录- 引入必要的Spring AI相关类和Lombok注解

src/main/java/com/hanserwei/snailsai/controller/DashScopeController.java

@@ -1,13 +1,19 @@
 package com.hanserwei.snailsai.controller;
 
+import com.hanserwei.snailsai.model.AIResponse;
 import com.hanserwei.snailsai.model.ChatMessageDTO;
 import jakarta.annotation.Resource;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.ai.chat.client.ChatClient;
 import org.springframework.ai.chat.memory.ChatMemory;
+import org.springframework.ai.chat.messages.UserMessage;
+import org.springframework.ai.chat.model.Generation;
+import org.springframework.ai.chat.prompt.Prompt;
 import org.springframework.http.MediaType;
 import org.springframework.web.bind.annotation.*;
 import reactor.core.publisher.Flux;
 
+@Slf4j
 @RequestMapping("/dashscope")
 @RestController
 @CrossOrigin
@@ -16,12 +22,20 @@ public class DashScopeController {
     @Resource
     private ChatClient dashScopeChatClient;
 
-    @PostMapping(value = "/chat",produces = MediaType.TEXT_EVENT_STREAM_VALUE)
-    public Flux<String> chat(@RequestBody ChatMessageDTO chatMessageDTO) {
-        return dashScopeChatClient.prompt()
-                .user(chatMessageDTO.getMessage())
-                .advisors(e-> e.param(ChatMemory.CONVERSATION_ID,chatMessageDTO.getConversionId()))
-                .stream()
-                .content();
+    @PostMapping(value = "/generateStream", produces = MediaType.TEXT_EVENT_STREAM_VALUE)
+    public Flux<AIResponse> generateStream(@RequestBody ChatMessageDTO chatMessageDTO) {
+        // 构建提示词
+        Prompt prompt = new Prompt(new UserMessage(chatMessageDTO.getMessage()));
+
+        // 流式输出
+        return dashScopeChatClient.prompt(prompt)
+                .advisors(a -> a.param(ChatMemory.CONVERSATION_ID, chatMessageDTO.getConversionId()))
+                .stream() // 流式输出
+                .chatResponse()
+                .mapNotNull(chatResponse -> {
+                    Generation generation = chatResponse.getResult();
+                    String text = generation.getOutput().getText();
+                    return AIResponse.builder().v(text).build();
+                });
     }
 }

src/main/java/com/hanserwei/snailsai/model/AIResponse.java

@@ -0,0 +1,15 @@
+package com.hanserwei.snailsai.model;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@Builder
+@AllArgsConstructor
+@NoArgsConstructor
+public class AIResponse {
+    // 流式响应内容
+    private String v;
+}