为什么不直接调用公司服务（如果两个控制器都存在于同一个应用程序中）？这将比调用公司控制器更快。
您的控制器将如下所示：

@RestController
public class UsersController {
    @Autowired
    private CompanyService companyService;

    @RequestMapping("/register")
    public ResponseEntity<User> registerUser(){
        //Do whatever you want
        CompanyInfo companyInfo = companyService.getCompanyInfo();
       //Do whatever you want
    }
}

如果您仍然希望直接致电公司财务总监，则可以执行以下操作：

@RestController
    public class UsersController {
        @Autowired
        private RestTemplate template;
    
        @RequestMapping("/register")
        public ResponseEntity<User> registerUser(){
            ResponseEntity<CompanyInfo> companyInfoResponse = template.getForObject("Url for getCompanyInfo() method", CompanyInfo.class);
            CompanyInfo companyInfo = companyInfoResponse.getBody();
            //Do whatever you want
        }
    }