public_producer/app/JsonRpc/PublicRpcService.php

<?php
namespace App\JsonRpc;
use App\Model\District;
use Hyperf\RpcServer\Annotation\RpcService;
use App\Tools\Result;
#[RpcService(name: "PublicRpcService", protocol: "jsonrpc-http", server: "jsonrpc-http")]
class PublicRpcService implements PublicRpcServiceInterface
{

    /**
     * @param array $data
     * @return array
     */
    public function getDistrictList(array $data): array
    {
        $result = District::where($data)->orderBy("code","asc")->get();
        return $result?Result::success($result->toArray()):Result::error("没有查到数据");
    }
}