HttpErrorResponse：内部服务器错误

Question

我是新的角度6。我用spring boot开发了一个post服务,当我通过postman测试它时,它工作得很好,但当我用web浏览器测试它时,它给了我这个错误：

HttpErrorResponse ；{headers：HttpHeaders,status：500,statusText：“ok”,URL：“http：//localhost:8080/api/test/ordermiss”,ok：false, …}错误：{timestamp：“2019-07-10t13:35:09.083+0000”,message：null,details：“uri=/api/test/ordermiss”}详细信息：“uri=/api/test/ordermiss”消息：nulltimestamp：“2019-07-10t13:35:09.083+0000

当我查看spring控制台时，它给出了这样的警告：

2019-07-11 13:36:01.796警告14404---[nio-8080-exec-4].M.M.A.ExceptionHandlerExceptionResolver：已解决[java.lang.NullPointerException]

我用同样的方法处理另一个对象，但我没有得到这个错误，所以请你能帮助我吗

此服务：

                constructor(private http: HttpClient) { }

           SaveOM(Om: Object): Observable<Object> {
         return this.http.post(`${this.baseUrl}`, Om);
           }

这是.ts：

    save() {
      this.omService.SaveOM(this.ordermission)
      .subscribe(data => console.log(data), error => console.log(error));
    this.ordermission = new Ordermission();
      }

     onSubmit() {
       this.submitted = true;
          this.save();
       }

类角：

           export class Ordermission {
          id:number;
        mat:string;
         depart:string;
         dest:string;
      // etat:string;enum class
       // type:string;enum class
        // localisation:string;enum class
         datedeb:Date;
        datefin:Date;
         distance:number;
         couttranp:number;
         coutheberg:number;
       total:number;
        }

控制器：

              @CrossOrigin(origins = "*", maxAge = 3600)
             @RestController
            @RequestMapping("/api/test")
              @PreAuthorize("hasRole('USER') or hasRole('ADMIN')")
          public class OrdermissionController {

  @Autowired private OrdermissionRepository ordermissionrep;

  @Autowired private OrderMissService orderMissService;


  @PostMapping("/ordermiss")
// @ExceptionHandler(RuntimeException.class)
    public Ordermission createOM(@Valid @RequestBody Ordermission OM) {
        return orderMissService.saveOM(OM);

    }

服务：

                 @Service
                public class OrderMissServiceImpl implementsOrderMissService {
                 Double var;
                 Double tot;
                 long cal;
                long cout;

  @Autowired private OrdermissionRepository ordermissionrep;


@Override
public Ordermission saveOM(Ordermission om) {
        if(om.getDepart().equals(Local.tunis) && om.getDest().equals(Local.sousse) || om.getDepart().equals(Local.sousse) && om.getDest().equals(Local.tunis)) {
        var =(double) 143;
        om.setDistance(var);
    }
    if(om.getDepart().equals(Local.tunis) && om.getDest().equals(Local.tabarka) || om.getDepart().equals(Local.tabarka) && om.getDest().equals(Local.tunis)) {
        var =(double) 175;
        om.setDistance(var);
    }


    if(om.getDepart().equals(Local.tunis) && om.getDest().equals(Local.zaghouan) || om.getDepart().equals(Local.zaghouan) && om.getDest().equals(Local.tunis)) {
        var =(double) 57;
        om.setDistance(var);
    }
    if(om.getDepart().equals(Local.tunis) && om.getDest().equals(Local.zarsis) || om.getDepart().equals(Local.zarsis) && om.getDest().equals(Local.tunis)) {
        var =(double) 544;
        om.setDistance(var);
    }

      if(om.getType().equals(Typetransport.perso)) {
          cal=(long) (om.getDistance()*2*0.08);
          om.setCouttranp(cal);
      }

      if(om.getType().equals(Typetransport.pubic)) {
          cal=(long) (om.getDistance()*2*0.375);
          om.setCouttranp(cal);
      }

     if(om.getEtat().equals(Etat.cadre)) {
         cout=(DaysBetween(om)+1)*25;
         om.setCoutheberg(cout);
     }
     if(om.getEtat().equals(Etat.non_cadre)) {
         cout=(DaysBetween(om)+1)*20;
         om.setCoutheberg(cout);
     }
     else if (om.getCoutheberg() != null && om.getCouttranp()!=null) {
        tot = (double) (om.getCoutheberg()+om.getCouttranp());
        om.setTotal(tot);
    }
    return  ordermissionrep.save(om);

}

该实体：

      @Entity
    @Table(name = "ordermission")
   public class Ordermission {

@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;

private String mat;

@Enumerated(EnumType.STRING)
private Typetransport type;

@Enumerated(EnumType.STRING)
private Etat etat;

@Enumerated(EnumType.STRING)
private Local depart;

@Enumerated(EnumType.STRING)
private Local dest;
@Temporal(TemporalType.DATE)
private Date datedeb;
@Temporal(TemporalType.DATE)
private Date datefin;

private Double distance;

private Long couttranp;
private Long coutheberg;

     // @Formula("couttranp + coutheberg")
       private Double total;  

Answer 1

错误500（内部服务器错误）有时显示CORS问题。检查您的服务器是否正确配置为接受CORS请求