20250304 langchain high level模式

pom.xml

@@ -24,6 +24,11 @@
             <artifactId>langchain4j-core</artifactId>
             <version>1.0.0-beta1</version>
         </dependency>
+        <dependency>
+            <groupId>dev.langchain4j</groupId>
+            <artifactId>langchain4j-spring-boot-starter</artifactId>
+            <version>1.0.0-beta1</version>
+        </dependency>
         <dependency>
             <groupId>dev.langchain4j</groupId>
             <artifactId>langchain4j-community-bom</artifactId>

src/main/java/com/ai/config/LanguageModelConfig.java

@@ -9,10 +9,10 @@ import org.springframework.context.annotation.Configuration;
 @Configuration
 public class LanguageModelConfig {
 
-    @Value("${langchain4j.community.dashscope.api-key}")
+    @Value("${langchain4j.community.dashscope.chat-model.api-key}")
     private String apiKey;
 
-    @Value("${langchain4j.community.dashscope.model-name}")
+    @Value("${langchain4j.community.dashscope.chat-model.model-name}")
     private String modelName;
 
     @Bean

src/main/java/com/ai/controller/LangChainController.java

@@ -1,5 +1,6 @@
 package com.ai.controller;
 
+import com.ai.service.Assist;
 import com.ai.service.LangChainService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.GetMapping;
@@ -14,6 +15,9 @@ public class LangChainController {
     @Autowired
     private LangChainService langChainService;
 
+    @Autowired
+    private Assist assist;
+
     /**
      * 处理用户输入并调用 LangChainService 获取响应
      * @param input 用户输入的内容
@@ -24,4 +28,10 @@ public class LangChainController {
         System.out.println("start chat...");
         return langChainService.getResponse(input);
     }
+
+    @GetMapping("/high/chat")
+    public String highChat(@RequestParam("input") String input) {
+        System.out.println("start highlevel chat...");
+        return assist.chat(input);
+    }
 }

src/main/java/com/ai/http/chat.http

@@ -1,2 +1,5 @@
 ### 测试 LangChainController 的 chat 接口
 GET http://localhost:8080/langchain/chat?input=今天天气如何
+
+### 测试 LangChainController 的 highlevel chat 接口
+GET http://localhost:8080/langchain/high/chat?input=评价一下路飞

src/main/java/com/ai/service/Assist.java

@@ -0,0 +1,11 @@
+package com.ai.service;
+
+import dev.langchain4j.service.SystemMessage;
+import dev.langchain4j.service.spring.AiService;
+
+@AiService
+public interface Assist {
+
+    @SystemMessage("假设你是唐吉坷德多佛朗明哥")
+    String chat(String userMessage);
+}

src/main/resources/application.properties

@@ -1,4 +1,4 @@
 server.port=8080
 
-langchain4j.community.dashscope.api-key=sk-2f703a41fff0488e9b6888013d2ee58a
+langchain4j.community.dashscope.chat-model.api-key=sk-2f703a41fff0488e9b6888013d2ee58a
-langchain4j.community.dashscope.model-name=deepseek-r1
+langchain4j.community.dashscope.chat-model.model-name=deepseek-v3