Exchange RestTemplate 给出 400 Bad Request

Question

我在 RestTemplate 中使用交换 GET 方法。但是在交换方法中传递 requestEntity 时，我收到了 400-Bad Request。 下面是我正在使用的代码。

生成一个 URL：

@GetMapping("/getValues")
    public ResponseEntity<ValueResponse> getValueCall(@RequestBody AccountDTO accountDTO) {
        Map<Integer, ValueEntity> crmMap = new HashMap<Integer, ValueEntity>();
        int accountNumber = accountDTO.getAccountNumber();
        valueMap.put(1, new ValueEntity("A", "B", "Tier 1", "DU", "Indian"));
        valueMap.put(2, new CRMEntity("C", "D", "Tier 2", "DU", "American"));
        valueMap.put(3, new CRMEntity("E", "F", "Tier 3", "DU", "English"));
        valueMap.put(4, new CRMEntity("G", "H", "Tier 1", "DU", "Australian"));
        ValueResponse valueResponse = new ValueResponse();
        for (Map.Entry<Integer, ValueEntity> entry : valueMap.entrySet()) {
            if (entry.getKey().equals(accountNumber)) {
                valueResponse.setAccountNumber(entry.getKey());
                valueResponse.setFirstName(entry.getValue().getFirstName());
                valueResponse.setLastName(entry.getValue().getLastName());
                valueResponse.setCustomerTier(entry.getValue().getCustomerTier());
                valueResponse.setCustomerType(entry.getValue().getCustomerType());
                valueResponse.setNationality(entry.getValue().getNationality());
                return new ResponseEntity<ValueResponse>(valueResponse, HttpStatus.OK);
            }
        }
        return null;
    }

使用 URL：

public EnrollResponse enrollingUser(ValueDTO valueDTO) {
   MultiValueMap<String, String> headers = new LinkedMultiValueMap<String, 
  String>();
  headers.add("Content-Type", "application/json");
  HttpEntity<ValueDTO> requestEntity = new HttpEntity<ValueDTO>(valueDTO, 
  headers);
  ResponseEntity<ValueResponse> enrollResponseEntity = 
  restTemplate.exchange("http://localhost:8080/getValues",
                HttpMethod.GET, requestEntity,  ValueResponse.class);
  return enrollResponseEntity.getBody();
}

实体和 DTO：

public class ValueDTO { 
    private String firstName;
    private String lastName;
    private String dateOfBirth;
    private String gender;
    private String nationality;
    private String email;
    private String channelId;
    private int accountNumber;
    private String languageKnown;
//constructor
//getters and setters
}

public class ValueResponse {    
    private long accountNumber; 
    private String firstName;
    private String lastName;
    private String customerTier;
    private String customerType;
    private String nationality;
//constructor
//getters and setters
}

public class ValueEntity {  
    private String firstName;
    private String lastName;
    private String customerTier;
    private String customerType;
    private String nationality;
//constructor
//getters and setters
}

我尝试使用 Header 作为 Content-Type:application/json 和 Body 从邮递员访问生产者 URL： { "名字":"A", “姓氏”：“B”， “出生日期”：“12 年 12 月 12 日”， “性别女”， “国籍”：“印度人”， “电子邮件”：“abc@gmail.com”， "channelId" :"价值应用", “帐号”：1， “languageKnown”：“英语” } 作为 valueDto 对象。

控制台：

org.springframework.web.client.HttpClientErrorException$BadRequest: 400 null
    at org.springframework.web.client.HttpClientErrorException.create(HttpClientErrorException.java:79)
    at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:122)
    at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:102)
    at org.springframework.web.client.ResponseErrorHandler.handleError(ResponseErrorHandler.java:63)
    at org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:778)
    at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:736)
    at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:670)
    at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:579)
    at com.smilesmember.domain.AccountDomain.enrollingUser(AccountDomain.java:184)
    at com.smilesmember.controller.SmilesMemberController.enrollWS(SmilesMemberController.java:50)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)

Answer 1

如果它接受您提到的 ValueDTO，请尝试以下代码

ResponseEntity<ValueResponse> enrollResponseEntity = 
  restTemplate.exchange("http://localhost:8080/getValues",
                HttpMethod.GET, requestEntity,  new ParameterizedTypeReference<ValueResponse>() {});