RESTTEMPLATE 422无法实现的实体期望项目列表，但获得了“ dict \”类型。

Question

我有一项邮政服务，并在Postman上收集。我可以成功地与Postman获得回应。该服务的身体和标头有点复杂。我想使用RestTemplate从Springboot调用此服务。但是我得到了标题中提到的错误。我可能在请求列表中的某个地方或发送错误的数据类型中犯了一个错误，但是我不知道，而且我已经尝试了很长时间了。我希望你能帮我。 首先， 我将与Postman发表请求的原始身体：

    {
    "currency": "EUR",
    "customer_country": "NL",
    "customer_language": "en",
    "partner_metadata": {
        "sales_channel": "inPath",
        "device":"app"
    },
    "request": [
        {
            "policy_type": "comprehensive_travel_insurance",
            "policy_type_version": "7",
            "is_return": false,
            "policy_start_date": "2022-06-07T10:22:30.925568+01:00",
            "policy_end_date": "2022-06-13T20:55:00+02:00",
            "departure_country": "LT",
            "destination_country": "EE",
            "total_tickets_price": 78.99,
            "number_of_adults": 1,
            "number_of_children": 0,
            "number_of_infants": 0,
            "trip_start_date": "2022-06-13T19:45:00+02:00",
            "trip_end_date": "2022-06-13T20:55:00+02:00",
            "flights": [
                {
                    "legs": [
                        {
                            "departure_datetime": "2022-06-13T19:45:00+02:00",
                            "arrival_datetime": "2022-06-13T20:55:00+02:00",
                            "flight_number": "BT905",
                            "marketing_airline_iata_code": "BT",
                            "operating_airline_iata_code": "BT",
                            "departure_airport": "VNO",
                            "arrival_airport": "TLL",
                            "departure_country": "LT",
                            "arrival_country": "EE"
                        }
                    ],
                    "departure_datetime": "2022-06-13T19:45:00+02:00",
                    "arrival_datetime": "2022-06-13T20:55:00+02:00",
                    "departure_country": "LT",
                    "arrival_country": "EE",
                    "departure_city": "VNO",
                    "arrival_city": "TLL"
                }
            ]
        }
    ]
}

Postman上的标题：

我称呼服务的示例：

@ResponseBody
@GetMapping("/abc")
public ResponseEntity<String> postQuotes(){
    final HttpHeaders headers = new HttpHeaders();
    headers.setAccept(Arrays.asList(MediaType.APPLICATION_JSON));
    headers.setContentType(MediaType.APPLICATION_JSON);
    headers.add("X-Api-Key", "****");
    headers.add("Date", "Thu, 02 Jun 2022 22:16:39 GMT");
    String signatureKeyID = "Signature keyId=\"****\",";
    String algoritm = "algorithm=\"hmac-sha1\",";
    String signature = "signature=\"***"";
    String authHeader = signatureKeyID.concat(algoritm).concat(signature);
    headers.add("Authorization", authHeader);
    HttpEntity<QuoteRequest> entity = new HttpEntity<>(fillQuoteRequest(), headers);
    ResponseEntity<String> postForEntity = rest.postForEntity(quoteURL, entity, String.class);
    return postForEntity;
}

我设置实体对象的方法：

    private Legs fillLegs(){
    Legs legs = new Legs();
    legs.setDepartureDatetime("2022-06-13T19:45:00+02:00");
    legs.setArrivalDatetime("2022-06-13T20:55:00+02:00");
    legs.setFlightNumber("BT905");
    legs.setOperatingAirlineIataCode("BT905");
    legs.setMarketingAirlineIataCode("BT905");
    legs.setDepartureAirport("VNO");
    legs.setArrivalAirport("TLL");
    legs.setArrivalCountry("LT");
    legs.setDepartureCountry("EE");
    return legs;
}

private Flights fillFlights(){
    Flights flights = new Flights();
    List<Legs> legsList = new ArrayList<>();
    legsList.add(fillLegs());
    flights.setLegs(legsList);
    flights.setDepartureDateTime("2022-06-13T19:45:00+02:00");
    flights.setArrivalDateTime("2022-06-13T19:45:00+02:00");
    flights.setDepartureCountry("LT");
    flights.setArrivalCountry("EE");
    flights.setDepartureCity("VNO");
    flights.setArrivalCity("TLL");
    return flights;
}

private QRequest fillQrequest(){
    QRequest qRequest = new QRequest();
    List<Flights> flightsList = new ArrayList<>();
    flightsList.add(fillFlights());
    qRequest.setFlights(flightsList);
    qRequest.setPolicyType("comprehensive_travel_insurance");
    qRequest.setPolicyTypeVersion("7");
    qRequest.setIsReturn(false);
    qRequest.setPolicyStartDate("2022-06-07T10:22:30.925568+01:00");
    qRequest.setPolicyEndDate("2022-06-13T20:55:00+02:00");
    qRequest.setDepartureCountry("LT");
    qRequest.setDestinationCountry("EE");
    qRequest.setTotalTicketsPrice(78.99f);
    qRequest.setNumberOfAdults(1);
    qRequest.setNumberOfChildren(0);
    qRequest.setNumberOfInfants(0);
    qRequest.setTripStartDate("2022-06-13T19:45:00+02:00");
    qRequest.setTripEndDate("2022-06-13T20:55:00+02:00");
    return qRequest;
}

private PartnerMetadata fillPartnerMeta(){
    PartnerMetadata pm = new PartnerMetadata();
    pm.setDevice("app");
    pm.setSalesChannel("inPath");
    return pm;
}

private QuoteRequest fillQuoteRequest(){
    QuoteRequest qr = new QuoteRequest();
    qr.setRequest(fillQrequest());
    qr.setPartnerMetadata(fillPartnerMeta());
    qr.setCurrency("EUR");
    qr.setCustomerCountry("NL");
    qr.setCustomerLanguage("en");
    return qr;
}

由于所有人，当我调用服务时返回错误：

org.springframework.web.client.HttpClientErrorException$UnprocessableEntity: 422 Unprocessable Entity: "{"type":"validation_error","message":"An API error occurred.","errors":{"request":["Expected a list of items but got type \"dict\"."]}}"

您能帮助我找到源错误？

Answer 1

据我所知，Flights和Legs应该作为列表发送，但您将它们发送为对象。