I'm trying to call other service from my spring boot application.
Employee class
public class Employee {
private int id;
private String name;
private String email;
private String gender;
private String status;
// Constructor, getters & setters
}
Below is my Rest controller code
#GetMapping("/getUsers")
public List<Employee> getUsers() {
RestTemplate restTemplate = new RestTemplate();
String resourceUrl = "http://gorest.co.in/public/v2/users";
ResponseEntity<List> response = restTemplate.getForEntity(resourceUrl, List.class);
List<Employee> items = response.getBody();
return items;
}
I tried adding different response type but I always get below error
org.springframework.web.client.UnknownContentTypeException: Could not extract response: no suitable HttpMessageConverter found for response type [interface java.util.List] and content type [text/html]
Resttemplate no support the response of 'content type [text/html;charset=UTF-8]'.
solution:
MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();
mappingJackson2HttpMessageConverter.setSupportedMediaTypes(Arrays.asList(
MediaType.TEXT_HTML,
MediaType.TEXT_PLAIN));
Related
I've been trying to retrieve XML using webClient in Spring, but is has not worked out.
I've been getting this error message.
UnsupportedMediaTypeException: Content type 'application/xml;charset=UTF-8' not supported for bodyType
I think the request was ok, but I failed to get the response as an object. I got '200 ok' from the server.
And I tried to send a request with 'Talend API Tester' to see if I made a right one, I got perfect response.
And I had added '#XmlRootElement', '#XmlAttribute's to my DTO.
But, I only had gotten an empty List '[]'.
What should I do to solve this problem?
Here are my codes.
//Service
public List<SearchResponseDto> search(SearchRequestDto searchRequestDto) {
System.out.println(requestUrl);
var uri = UriComponentsBuilder.fromUriString(requestUrl)
.queryParams(searchRequestDto.toMultiValueMap())
.build()
.encode()
.toUri();
return WebClient.create()
.get()
.uri(uri)
.accept(MediaType.APPLICATION_XML)
.headers(head -> {
head.set("X-Naver-Client-Id", naverId);
head.set("X-Naver-Client-Secret", naverSecret);
})
.retrieve()
.bodyToFlux(SearchResponseDto.class)
.toStream()
.collect(Collectors.toList());
}
//responseDTO
#Data
#NoArgsConstructor
#AllArgsConstructor
public class SearchResponseDto {
private String lastBuildDate;
private int total;
private int start;
private int display;
private List<SearchItem> item;
#Data
#NoArgsConstructor
#AllArgsConstructor
public static class SearchItem {
private String title;
private String link;
private String image;
private String author;
private int price;
private int discount;
private String publisher;
private String isbn;
private String description;
private String pubdate;
}
}
You need to configure additional codec to deserialize Xml response
WebClient.builder()
.exchangeStrategies(
ExchangeStrategies.builder()
.codecs(configurer ->
configurer.defaultCodecs().jaxb2Decoder(new Jaxb2XmlDecoder())
)
.build()
)
.build();
I have a feign client that uses a dto to perform the request using #RequestBody. The problem is that some property does not match with the java standards, for example id_client. Is there a way to change the variable name and keep it working with the feign ?
Below there is the code of the feign client the dto used in the request body.
#FeignClient(name="sso-token", url = "http://keycloak.com.br:8180", path="/")
public interface SsoTokenQueryWebAdapter {
#PostMapping(value = "/auth/realms/real-refrigerantes/protocol/openid-connect/token", consumes = "application/x-www-form-urlencoded")
public String recuperarToken(#RequestBody RequestTokenDto dto);
}
#Data
public class RequestTokenDto {
private String username;
private String password;
private String client_id;
private String client_secret;
private String grant_type;
}
I have Rest Controller in my application which has the code snippet like below:-
#RestController
#RequestMapping("/api/v1/user")
public class UserRestControllerV1 {
#PostMapping("")
public Response registerUser(#RequestBody #Valid final Request<UserDto> request,
final HttpServletRequest httpServletRequest,
BindingResult result){
Response response = new Response(request);
if(result.hasErrors()){
response.setData(new String("Error"));
}else {
response.setData(new String("Test"));
}
return response;
}
The Request Class:-
#JsonInclude(JsonInclude.Include.NON_NULL)
public class Request<T> {
#JsonProperty(value = "co-relation-id")
private String coRelationID;
#NotNull(message = "The request body should be present")
private T data;
/*
..... various other fields
Getters / Setters
*/
}
The UserDto Class :-
public class UserDto {
#NotNull(message = "The username should not be null")
private String username;
#NotNull(message = "The password should not be null")
#JsonIgnore
private String password;
/*
..... various other fields
Getters / Setters
*/
}
Issue : I am having issues with my validations here. The field private T data in the request class gets validated but the fields inside T - in the case UserDto are not getting validated.
So I need to know the approach or code snippet to achieve this.
I have tried configuring the hibernate validator bean in the configuration but it is of no help in the scenario
#Valid constraint will instruct the Bean Validator to delve to the type of its applied property and validate all constraints found there.
#JsonInclude(JsonInclude.Include.NON_NULL)
public class Request<T> {
#JsonProperty(value = "co-relation-id")
private String coRelationID;
//#NotNull(message = "The request body should be present")
#Valid
private T data;
/*
..... various other fields
Getters / Setters
*/
}
I am trying to create a REST service that consumes the "multipart/form-data" with text and attachment objects. For files i can use "org.springframework.web.multipart.MultipartFile", but how do i specify the service method for Text objects?
Below is the expected client call to service.
create Rest endpoint by using this way
public void sendEmail(#RequestParam String to,#RequestParam String from,#RequestParam String cc,#RequestParam String body, #RequestParam(required = false)MultipartFile[] file){
}
or
create pojo class for strings
public class Email{
private String from;
private String to;
private String cc;
private String body;
// getters and setters
}
//email should be json string
public void sendEmail(#RequestParam String email,#RequestParam(required = false) MultipartFile[] file){
ObjectMapper mapper=new ObjectMapper();
Email email_pojo=mapper.readValue(email,Email.class);
}
Just create the controller as specified below:
#RequestMapping(value = "/uploadFiles", headers = ("content-type=multipart/*"), method = RequestMethod.POST)
public AppDTO uploadFile(UploadFiles uploadFiles, HttpServletRequest request) {
Now create a pojo class for what ever things you need to submit along with a multipartfile member where the file will bind to. refer below code for pojo
class UploadFiles
{
private String cc;
private String to;
private String from;
private MultipartFile attachment;
//create getters and setters
}
MultipartFile here used is provided by spring
import org.springframework.web.multipart.MultipartFile;
If you have more than one attachment you can use MultipartFile[] in POJO
I have a 2 method:
first one create product:
#RequestMapping(method = RequestMethod.POST)
public ResponseEntity<?> create(#Validated ProductDTO productDTO){
productService.addProduct(productDTO);
return new ResponseEntity<>("Maxsulot ro'yhatga qo'shildi", HttpStatus.OK);
}
another one update product:
#RequestMapping(method = RequestMethod.PUT)
public ResponseEntity<?> update(#Validated ProductDTO productDTO){
productService.update(productDTO);
return new ResponseEntity<>("Maxsulot ma'lumotlari yangilandi", HttpStatus.OK);
}
Now, I am surprized that, if I sent same data post method works fine(screen1), but put(screen2) method return validation error.
screen1(post)
screen2(put)
What the problem is?
MyDTO class:
public class ProductDTO {
private Long id;
private MultipartFile file;
#NotNull
#Size(min = 2, max = 50)
private String productName;
#NotNull
private Long productPrice;
private String productInfo;
#NotNull
private Long categoryId;
private String unitOfMeasurement;
// getters and setters
}
I can see you have #Validated that should validate your request body according to JSR-303.
Seems like it is not consistent when you POST and PUT. It validates/not validating and return an error because your body does not match the validation rules you placed on ProductDTO.
In all the docs I saw you should do something like #Valid #RequestBody instead of just putting #Validated.
Try to change it to the above and see if it now work more consistently.