I'm trying to persiste to MySQL database ith POST method and I'm getting this error

• I'm using Swagger to generate request Body
• I'm trying to make OneToMany and ManyToOne
• I'm using spring boot with maven multi-modules.

{ "timestamp": "2022-03-08T20:59:23.477 0000", "status": 400,
"error": "Bad Request", "message": "JSON parse error: Cannot construct instance of releve.domain.domain.ReleveBancaire (although at least one Creator exists): no String-argument constructor/factory method to deserialize from String value ('string'); nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot construct instance of releve.domain.domain.ReleveBancaire (although at least one Creator exists): no String-argument constructor/factory method to deserialize from String value ('string')\n at [Source: (PushbackInputStream); line: 22, column: 25] (through reference chain: releve.domain.domain.ReleveBancaire["lignereleve"]->java.util.ArrayList[0]->releve.domain.domain.LigneReleve["releveBancaire"])", "path": "/api/relevebancaire" }

Entities:

@AllArgsConstructor
@NoArgsConstructor
@Getter
@Setter
@Table(name = "RELEVEBANCAIRE")
@Entity
public class ReleveBancaireEntity {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(nullable = false, updatable = false)
    private Long releveBancaireId;
    private Date dateReception;
    private String label;
    private int nbrLignes;
    private int nbrOperationCredit;
    private int nbrOperationDebit;
    private BigDecimal soldeInitial;
    private BigDecimal soleFinal;
    @OneToMany(mappedBy = "releveBancaire", cascade = CascadeType.ALL, fetch = FetchType.LAZY, orphanRemoval = true)
    @JacksonXmlProperty(localName = "lignereleve")
    @JacksonXmlElementWrapper(useWrapping = false)
    private List<LigneReleveEntity> lignereleve;

===

@Table(name = "LIGNERELEVE")
@Entity
@Getter
@Setter
@AllArgsConstructor
@NoArgsConstructor
public class LigneReleveEntity {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(nullable = false, updatable = false)
    private Long ligneReleveId;
    private Date dateOperation;
    private String operationNature;
    private String rib;
    private int numCheck;
    private BigDecimal montant;
    private BigDecimal creditDebit;
    private int refDER;
    private int refPaiment;
    private String modePaiment;
    @ManyToOne(fetch = FetchType.EAGER, optional = false)
    @JoinColumn(name = "idReleve")
    private ReleveBancaireEntity releveBancaire;

This is my request body:

{
  "releveBancaireId": 0,
  "dateReception": "2022-03-08T20:59:22.026Z",
  "label": "string",
  "nbrLignes": 0,
  "nbrOperationCredit": 0,
  "nbrOperationDebit": 0,
  "soldeInitial": 0,
  "soleFinal": 0,
  "lignereleve": [
    {
      "ligneReleveId": 0,
      "dateOperation": "2022-03-08T20:59:22.027Z",
      "operationNature": "string",
      "rib": "string",
      "numCheck": 0,
      "montant": 0,
      "creditDebit": 0,
      "refDER": 0,
      "refPaiment": 0,
      "modePaiment": "string",
      "releveBancaire": "string",    **<========= this line**
      "operationCredit": {
        "operationCreditId": 0,
        "operationDate": "2022-03-08T20:59:22.027Z",
        "operationCheque": {
          "numeroCheque": 0,
          "cheque": {
            "numerCheque": 0,
            "acteur": {
              "acteurId": 0,
              "nomActeur": "string",
              "prenomActeur": "string"
            }
          }
        },
        "operationEspeces": {
          "cin": "string",
          "nomEmetteur": "string",
          "prenomEmetteur": "string"
        },
        "operationVirement": {
          "rib": "string",
          "compteBancaire": {
            "compteBancaireId": 0,
            "rib": "string",
            "codeSwift": "string",
            "banque": {
              "banqueId": 0,
              "nomBanque": "string"
            },
            "acteur": {
              "acteurId": 0,
              "nomActeur": "string",
              "prenomActeur": "string"
            }
          }
        },
        "produit": {
          "produitId": 0,
          "produitCode": "string",
          "produitLabel": "string"
        }
      }
    }
  ]
}

So the problem is that i'm having One ReleveBancaireEntity in LigneReleveEntity but i's giving me ReleveBancaireEntity as a String I tried to implement NoArg Constructor for deserialize with no result, I'm using Swagger for posting it, Swagger generates format for me. Please any help I'll be appreciate

CodePudding user response：

Check if your constructor is actually public? Also try running with “ignore on unknown properties” once to see the constructed object from json.

CodePudding user response：

I tried the exact code (copy pasted), and it just worked. I have uploaded it on github for you to be able to refer https://github.com/srjha/stackoverflow-71386316