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一、POM依赖

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>3.3.8</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>ai.langchain</groupId><artifactId>langcain-demo</artifactId><version>0.0.1-SNAPSHOT</version><name>langcain-demo</name><description>Demo project for Spring Boot</description><url/><licenses><license/></licenses><developers><developer/></developers><scm><connection/><developerConnection/><tag/><url/></scm><properties><java.version>17</java.version></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><dependency><groupId>dev.langchain4j</groupId><artifactId>langchain4j-open-ai-spring-boot-starter</artifactId><version>1.0.0-beta2</version></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>

二、application.properties

spring.application.name=langcain-demo
server.port=8081
OPENAI_API_KEY=you-api-key
langchain4j.open-ai.streaming-chat-model.api-key=${OPENAI_API_KEY}
# 这里是使用阿里云的qwq-32b模型
langchain4j.open-ai.streaming-chat-model.base-url=https://dashscope.aliyuncs.com/compatible-mode/v1
langchain4j.open-ai.streaming-chat-model.model-name=qwq-32b
langchain4j.open-ai.streaming-chat-model.log-requests=true
langchain4j.open-ai.streaming-chat-model.log-responses=true

三、Controller

@RestController
public class ChatController {StreamingChatLanguageModel streamingLanguageModel;public ChatController(StreamingChatLanguageModel chatLanguageModel) {this.streamingLanguageModel = chatLanguageModel;}@GetMapping(value = "/chat", produces = MediaType.TEXT_EVENT_STREAM_VALUE)public SseEmitter model(@RequestParam(value = "message", defaultValue = "Hello") String message) {SseEmitter emitter = new SseEmitter();System.out.println("接收到请求");streamingLanguageModel.chat(message, new StreamingChatResponseHandler() {@Overridepublic void onPartialResponse(String partialResponse) {try {emitter.send(partialResponse);} catch (IOException e) {emitter.complete();}System.out.println("partialResponse:" + partialResponse);}@Overridepublic void onCompleteResponse(ChatResponse completeResponse) {emitter.complete();}@Overridepublic void onError(Throwable error) {}});return emitter;}