Initial commit

langchain4j-ai-model-params/src/main/java/com/iwe3/langchain4j/ModelParamsApplication.java

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+package com.iwe3.langchain4j;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class ModelParamsApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(ModelParamsApplication.class,args);
+    }
+}

langchain4j-ai-model-params/src/main/java/com/iwe3/langchain4j/config/LLMConfig.java

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+package com.iwe3.langchain4j.config;
+
+import com.iwe3.langchain4j.listener.UserpuChatModelListener;
+import dev.langchain4j.model.chat.ChatModel;
+import dev.langchain4j.model.openai.OpenAiChatModel;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import java.time.Duration;
+import java.util.List;
+
+@Configuration
+public class LLMConfig {
+
+    @Bean(name = "qwen")
+    public ChatModel chatModelQwen(){
+        /*模型3件套：apikey - modelName - baseUrl */
+        return OpenAiChatModel.builder()
+                .apiKey(System.getenv("DASH_SCOPE_API_KEY"))
+                .modelName("qwen-plus")
+                .baseUrl("https://dashscope.aliyuncs.com/compatible-mode/v1")
+                .logRequests(true)
+                .logResponses(true)
+                .listeners(List.of(new UserpuChatModelListener()))
+                .maxRetries(3)
+                .timeout(Duration.ofSeconds(5))
+                .build();
+    }
+
+    /**
+     * @Description:
+     * 知识出处，https://api-docs.deepseek.com/zh-cn/
+     */
+    @Bean(name = "deepseek")
+    public ChatModel chatModelDeepSeek(){
+        return
+                OpenAiChatModel.builder()
+                        .apiKey(System.getenv("DEEP_SEEK_API_KEY"))
+                        .modelName("deepseek-chat")
+                        //.modelName("deepseek-reasoner")
+                        .baseUrl("https://api.deepseek.com/v1")
+                        .build();
+    }
+
+}

langchain4j-ai-model-params/src/main/java/com/iwe3/langchain4j/controller/ModelParameterController.java

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+package com.iwe3.langchain4j.controller;
+
+import dev.langchain4j.model.chat.ChatModel;
+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;
+
+@RestController
+@Slf4j
+public class ModelParameterController
+{
+    @Resource(name = "qwen")
+    private ChatModel chatModelQwen;
+
+    // http://localhost:9004/lc4j/modelparam/config?prompt=我是谁
+    @GetMapping(value = "/lc4j/modelparam/config")
+    public String config(@RequestParam(value = "prompt", defaultValue = "你是谁") String prompt)
+    {
+        var result = chatModelQwen.chat(prompt);
+
+        System.out.println("通过langchain4j调用模型返回结果："+result);
+
+        return result;
+    }
+}

langchain4j-ai-model-params/src/main/java/com/iwe3/langchain4j/listener/UserpuChatModelListener.java

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+package com.iwe3.langchain4j.listener;
+
+import cn.hutool.core.util.IdUtil;
+import dev.langchain4j.model.chat.listener.ChatModelErrorContext;
+import dev.langchain4j.model.chat.listener.ChatModelListener;
+import dev.langchain4j.model.chat.listener.ChatModelRequestContext;
+import dev.langchain4j.model.chat.listener.ChatModelResponseContext;
+import lombok.extern.slf4j.Slf4j;
+
+@Slf4j
+public class UserpuChatModelListener implements ChatModelListener
+{
+    @Override
+    public void onRequest(ChatModelRequestContext requestContext)
+    {
+
+        // onRequest配置的k:v键值对，在onResponse阶段可以获得，上下文传递参数好用
+        String uuidValue = IdUtil.simpleUUID();
+        requestContext.attributes().put("TraceID",uuidValue);
+        log.info("请求参数requestContext:{}", requestContext+"\t"+uuidValue);
+    }
+
+    @Override
+    public void onResponse(ChatModelResponseContext responseContext)
+    {
+        Object object = responseContext.attributes().get("TraceID");
+
+        log.info("返回结果responseContext:{}", object);
+    }
+
+    @Override
+    public void onError(ChatModelErrorContext errorContext)
+    {
+        log.error("请求异常ChatModelErrorContext:{}", errorContext);
+    }
+}

langchain4j-ai-model-params/src/main/resources/application.yml

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+server:
+  port: 9004
+spring:
+  application:
+    name: langchain4j-ai-model-params
+logging:
+  level:
+    dev:
+      langchain4j: debug