无法使用ManyToOne向邮递员发送数据

Question

嗨，我正在我的项目中使用spring-boot-and-rest，我在两个术语之间建立了一个关系ManyToOne，但我无法向邮递员发送添加任务及其类别的请求，我甚至不确定这两个术语是否正确相关他是两个实体和控制

使命时代

@Entity
@Table(name="missions")
public class Mission {


public Mission() {

}

public Mission(int id, String state, String adresse, int etatMission, String image, List<Categorie> categories,
String ville, int duree, String description, String domaine) {
this.id = id;
this.state = state;
this.adresse = adresse;
this.etatMission = etatMission;
this.image = image;
this.categories = categories;
this.ville = ville;
this.duree = duree;
this.description = description;
this.domaine = domaine;
}
public List<Categorie> getCategories() {
return categories;
}
public void setCategories(List<Categorie> categories) {
this.categories = categories;
}
public String getVille() {
return ville;
}
public void setVille(String ville) {
this.ville = ville;
}
public Mission(Map<String,Object> userMap) {
if (userMap.get("id") != null)  

this.id = (int )userMap.get("id");
this.state = (String) userMap.get("state");
this.duree = (int) userMap.get("duree");
this.domaine = (String) userMap.get("domaine");
this.description = (String) userMap.get("description");
this.ville=(String) userMap.get("ville");
this.adresse=(String) userMap.get("adresse");
this.etatMission=(int) userMap.get("etatMission");
this.image=(String) userMap.get("image");
this.categories=(List<Categorie>) userMap.get("categories");
}

@Id
@GeneratedValue(strategy=GenerationType.AUTO)
private int id;
private String state;
private String adresse;
private int etatMission;
private String image;
@OneToMany(mappedBy="mission",cascade=CascadeType.ALL)
private List<Categorie> categories;
public String getImage() {
return image;
}
public void setImage(String image) {
this.image = image;
}
private String ville;
public int getEtatMission() {
return etatMission;
}
public void setEtatMission(int etatMission) {
this.etatMission = etatMission;
}
private int duree;
private String description;
private String domaine;

public String getDomaine() {
return domaine;
}
public void setDomaine(String domaine) {
this.domaine = domaine;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getAdresse() {
return adresse;
}
public void setAdresse(String adresse) {
this.adresse = adresse;
}
@Override
public String toString() {
return "Mission [id=" + id +  ", state=" + state + ", duree=" + duree + "]";
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getState() {
return state;
} 
public void setState(String state) {
this.state = state;
}
public int getDuree() {
return duree;
}
public void setDuree(int duree) {
this.duree = duree;
}

public void add(Categorie cat) {

if (categories == null) {
categories = new ArrayList<>();
}

categories.add(cat);

cat.setMission(this);
}   
}

范畴entity

@Entity
@Table(name="categorie")
public class Categorie {
public Categorie() {

}






public Categorie(Map<String, Object> catMap) {
this.id=(int) catMap.get("id");
this.nom = (String) catMap.get("nom");
this.mission =(Mission) catMap.get("mission_id") ;

}

@Id
@GeneratedValue(strategy=GenerationType.AUTO)
private int id ;
private String nom;
@ManyToOne
@JoinColumn(name="mission_id",referencedColumnName="id")
private Mission mission;
public Categorie(int id, String nom, Mission mission) {
this.id = id;
this.nom = nom;
this.mission = mission;
}
public String getNom() {
return nom;
}
public void setNom(String nom) {
this.nom = nom;
}
@Override
public String toString() {
return "Categorie [nom=" + nom + "]";
}
public Mission getMission() {
return mission;
}
public void setMission(Mission mission) {
this.mission = mission;
}

public int getId() {
return id;
}

public void setId(int id) {
this.id = id;
}

}

这是任务的控制器

package ma.ac.emi.MinuteBrico.Controllers;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
import ma.ac.emi.MinuteBrico.Services.MissionServices;
import ma.ac.emi.MinuteBrico.Models.Mission;
@RestController
public class MissionController {

@Autowired
private MissionServices missionService;

@CrossOrigin
@GetMapping("/missions")
public List<Mission> index(){
return missionService.findAll();
}
@CrossOrigin
@GetMapping("/missions/{id}")
public Optional<Mission> indexById(@PathVariable String id){
int missionId = Integer.parseInt(id);
return missionService.findById(missionId);

}
@CrossOrigin()
@PostMapping("/missions")
public String create(@RequestBody Map<String, Object> missionMap) {
System.out.println(missionMap);
Mission mission = new Mission(missionMap);
missionService.savemission(mission);
return "Mission ajouté";
}

}

package ma.ac.emi.MinuteBrico.Repositories;
import java.util.List;
import org.springframework.data.jpa.repository.JpaRepository;
import  ma.ac.emi.MinuteBrico.Models.Mission;
public interface MissionRepository extends JpaRepository<Mission,Integer> {


}

邮递员请求

{ 
"state": "Urgent",
"adresse": "Av ben drisse",
"etatMission": 0,
"image": "assets/Brand.jpeg",
"ville": "Chefchaouen",
"duree": 480000,
"description": "je veux quelqu\'un pour me faire une cuisne",
"domaine": "Plomberie",
"categories":[
{
"id":15,
"nom":"Menuiserie",
"mission":{
"field":"value"
}
}
]
}

Answer 1

尝试添加@ManyToOne(cascade=CascadeType.ALL(