webman框架实现类chatgpt问答流式对话

webman框架实现类chatgpt问答流式对话

使用php框架webman的SSE技术实现类chatgpt问答流式对话（可根据业务需求调整对接不同的第三方：文心一言，Kimi等）

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代码实例

需要用到 guzzlehttp/guzzle 库，使用composer安装

composer require guzzlehttp/guzzle

1、路由

// 对话助手(流式响应)-路由
Route::get('/aigc/chat', [StreamController::class, 'dataAnalysisStream']);

2、Controller层（StreamController）

use support\Request;
use support\Response;
use Workerman\Connection\TcpConnection;
use app\interfaces\impl\InfiniteInquiryImpl;

class StreamController extends BaseController
{
	//发起请求类
	private InfiniteInquiryImpl $infiniteInquiryImpl;
	    public function __construct()
	    {
	        $this->infiniteInquiryImpl = new InfiniteInquiryImpl();
	    }
    
	//请求处理方法
	public function dataAnalysisStream(Request $request): Response
	{
	    //获取问题参数
	    $question = $request->get('message', '');
	    
	    /**
	    * 第三方接口(流式响应)
	    * 可修改为其他第三方接口
	    **/
	    $response_body =  $this->infiniteInquiryImpl->dataAnalysisStream($question);

	    $connection = $request->connection;
	    //每秒检查连接状态，可修改此值
	    $id = Timer::add(1, function () use ($connection, &$id, $response_body) {
	        if ($connection->getStatus() !== TcpConnection::STATUS_ESTABLISHED) {
	            Timer::del($id);
	        }
	        //对返回的响应进行循环输出给客户端
	        while (!$response_body->eof()) {
	            $chunk = $response_body->read(1024);
	            $connection->send($chunk, true);
	        }
	    });
	    $headers = [
	        'Content-Type' => 'text/event-stream',
	        'Cache-Control' => 'no-cache',
	        'Connection' => 'keep-alive',
	    ];
	    return response('', 200, $headers);
	}
}

3、Service请求层（InfiniteInquiryImpl）

use GuzzleHttp\Client;
use GuzzleHttp\Exception\GuzzleException;
use Psr\Http\Message\StreamInterface;
use support\Log;
use WebmanTech\LaravelHttpClient\Facades\Http;

class InfiniteInquiryImpl
{
	private Client $client;
	public function __construct()
    {
        $this->client = new Client([
            // 超时时间
            'timeout'  => 60,
            // 关闭ssl校验
            'verify' => false,
            // 开启流式响应
            'stream' => true
        ]);
    }
    
    //第三方对话接口
	public function dataAnalysisStream($question)
	{
	    $data = [
	        'query' => $question,
	    ];
	    $response_url = '请求第三方接口地址';
	    try {
	        $response = $this->client->request('POST', $response_url, [
	            'json' => $data
	        ]);
	        // 获取HTTP响应状态码
	        if (200 == $response->getStatusCode()){
	            return $response->getBody();
	        }
	        return false;
	    } catch (GuzzleException $e) {
	        Log::error('错误信息: ' . $e->getMessage());
	        return false;
	    }
	}
}

最后效果