public_producer/app/JsonRpc/DistrictService.php

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

    /**
     * @param int $id
     * @return array
     */
    public function getDistrictInfo(int $id): array
    {
        $adInfo = District::query()->find($id);
        if (empty($adInfo)) {
            return Result::error("没有数据",0);
        }
        return Result::success($adInfo->toArray());
    }

    /**
     * @param string $keyword
     * @param int $page
     * @param int $pageSize
     * @return array
     */
    public function getDistrictList(string $keyword, int $pid=0): array
    {
        $where  = [
            ['name','like','%'.$keyword.'%'],
            ['pid','=',$pid],
        ];
        $districtList =  District::where($where)->get();
        if (empty($districtList)) {
            return Result::error("没有数据",0);
        }
        return Result::success($districtList->toArray());
    }
}