I am hitting an API and getting the response using resttemplate.exchange object and i am mapping the response to a parameterized object .All the variables inside the response class are getting mapped to the response entity object but not the Attribute class variables inside the parameterized object.
ResponseEntity<ArrayList<Response>> responseEntity =
restTemplate.exchange(
builder.toUriString(),
HttpMethod.GET,
new HttpEntity<>(headers),
new ParameterizedTypeReference<ArrayList<Response>>()
{});
#Getter
#Setter
public class Response {
private String number;
private String id;
private String name;
#JsonProperty("attributes")
private ArrayList<Attributes> attributes ;
}
#Getter
#Setter
#JsonIgnoreProperties(ignoreUnknown=true)
public class Attributes {
private String value;
private String name;
}
Related
I've done the following Thymeleaf form which takes some fields and a .pdf CV file
Form: link
There is the controller:
#Controller
#RequestMapping("/interview")
public class InterviewController {
#PostMapping(path = "/create", consumes = { MediaType.MULTIPART_FORM_DATA_VALUE })
public #ResponseBody ResponseEntity<Object> createInterview(#RequestBody #ModelAttribute CreateInterviewTO createInterviewTO) {
ErrorRTO errorRTO = checkErrorsInsertInterview.validate(createInterviewTO);
//...Other
}
}
And at the end, DTO class:
#Getter
#Setter
#NoArgsConstructor
#AllArgsConstructor
public class CreateInterviewTO {
private String site;
private String candidateName;
private String candidateSurname;
private Date candidateBirth;
private String mail;
private String eduQualification;
private String candidateType;
private String interviewType;
private String enterpriseId;
private MultipartFile curriculum;
}
When I send the request, I receive the following error:
w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'application/x-www-form-urlencoded;charset=UTF-8' not supported]
UPDATE: when I sent request, curriculum DTO attribute is null.
Anyone has a solution?
I got the error "Resolved [org.springframework.web.bind.MissingPathVariableException: Missing URI template variable 'rank' for method parameter of type Rank]" on eclipse console
And message: "Missing URI template variable 'rank' for method parameter of type Rank" with status "500" whenever try HTTP POST request
My RESTController code:
#RestController
#RequestMapping(path = "/comp")
public class RankController {
#PostMapping(path = "/rank")
ResponseEntity<Rank> createRank(#Valid #PathVariable Rank rank) throws URISyntaxException{
Rank result = rankRepository.save(rank);
return ResponseEntity.created(new URI("/comp/rank" + result.getId())).body(result);
}
}
My Rank entity
#Data
#NoArgsConstructor
#AllArgsConstructor
#Entity
#Table(name = "RANK_TBL")
public class Rank {
#Id
private Long id;
private String name;
#ManyToOne(cascade = CascadeType.PERSIST)
private Employee employee;
}
My Employee entity
#Data
#AllArgsConstructor
#NoArgsConstructor
#Entity
#Table(name = "EMPLOYEE_TBL")
public class Employee {
#Id
private Long id;
private String name;
private String email;
#OneToMany
private Set<Rank> Rank;
}
Change #PathVariable with #RequestBody
Here you are making a request to save the entity and you should pass the payload as #RequestBody in JSON format. From postman you may use raw type and select the JSON type.
Ideal way is to use #RequestBody whenever we are creating or updating the records which requires the object to passed with POST and PUT methods. For methods which retrieves the records based on Id or some parameters you may use #PathVariable
You may explore more about the annotations here
I want to send image and JSON data to my back end in Spring Boot.
This is my method:
#PostMapping
public void uploadFile(#ModelAttribute FileUploadDto fileUploadDto) {
My FileUploadDto model:
public class FileUploadDto {
private MultipartFile file;
private CategoryModel category;
My CategoryModel model:
#Entity
#Table(name = "Category")
#JsonIgnoreProperties({ "hibernateLazyInitializer", "handler" })
public class CategoryModel {
#Id
#Column(name = "id")
//#GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
private String category_name;
private String category_description;
private String image_path;
#JsonIgnore
#OneToMany( mappedBy = "category")
private Set<ProductModel> category;
I do not understand where I'm wrong.
My postman request:
Your payload has to be raw and in json form. Something like this would help Spring boot to convert your payload into a object of an example class:
public class Foo{
public String foo;
public String foo1;
//Getters setters
}
And the request handling method:
#PostMapping
public void uploadFile(#RequestBody Foo foo)
It is also recommended to parse the payload into some a temporary class and then convert objects of the temporary class into the Entity class and vice versa. Take a look at: https://struberg.wordpress.com/2012/01/08/jpa-enhancement-done-right/ for more information
Also, if you want to upload file per REST I also recommend you to take a look at the following documentation: https://www.callicoder.com/spring-boot-file-upload-download-rest-api-example/
Best luck.
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 have a MySQL database and I want to retrieve some data as json.
And I have an entity Offre wich has #OneToMany relation with the AssociationCandidatOffre entity.
and I have an api which calles this method in my repository :
offreRepository.findAll();
Offre entity :
#Entity
public class Offre implements Serializable {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "CODE_OFFRE")
private Long codeOffre;
private String titre;
#OneToMany(mappedBy = "offre")
private Collection<AssociationCandidatOffre> associationCandidatOffres;
public Collection<AssociationCandidatOffre> getAssociationCandidatOffres() {
return associationCandidatOffres;
}
public void setAssociationCandidatOffres(Collection<AssociationCandidatOffre> associationCandidatOffres) {
this.associationCandidatOffres = associationCandidatOffres;
}
//... getters/setters
}
AssociationCandidatOffre entity :
#Entity
public class AssociationCandidatOffre implements Serializable {
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY)
private Long idAssociation;
private String lettreMotivation;
private String tarifJournalier;
private Date dateDisponibilite;
#ManyToOne
private Candidat candidat;
#ManyToOne
private Offre offre;
#JsonIgnore
#XmlTransient
public Candidat getCandidat() {
return candidat;
}
#JsonSetter
public void setCandidat(Candidat candidat) {
this.candidat = candidat;
}
#JsonIgnore
#XmlTransient
public Offre getOffre() {
return offre;
}
#JsonSetter
public void setOffre(Offre offre) {
this.offre = offre;
}
//... getters/setters
}
the problem is when I call the api /offres to return me a json object I get this error message instead :
Failed to write HTTP message: org.springframework.http.converter.HttpMessageNotWritableException: Could not write content: could not extract ResultSet (through reference chain: java.util.ArrayList[0]->com.***.Rekrute.entities.Offre["associationCandidatOffres"]);
nested exception is com.fasterxml.jackson.databind.JsonMappingException: could not extract ResultSet (through reference chain: java.util.ArrayList[0]->com.***.Rekrute.entities.Offre["associationCandidatOffres"])
when I use #JsonIgnore in the getAssocationCandidatOffres I dont get any errors but I want that association in the json result as well.
Normally, this shouldn't generate any error since I have #JsonIgnore in the other side of the relation which is getOffre().
how can I solve this problem ?
You can't convert a bidirectional relation of an enitity to JSON.
You get an endless loop.
JSON-Parser starts with the entity Offer and reads the associated AssociationCandidatOffre via getAssociationCandidatOffres(). For every AssociationCandidatOffre the JSON-Parser read getOffre() and starts again. The parser don't know when he must end.