在REST控制器中传递枚举时，我得到了java.lang.IllegalArgumentException，而我将枚举用作字符串

Question

控制器：-

@RequestMapping(value="/CreateMovie", method= RequestMethod.POST)
    public HttpStatus createMovie(@RequestBody JSONObject object) {
        Movie movie =new Movie(object.optString("name"),
                    MovieType.valueOf(object.optString("type")),
                    new Date(object.optString("releasedate")),
                    Integer.parseInt(object.optString("time")), 
                    Genre.valueOf(object.optString("genre")));
            //object.

    repository.save(movie);

    return HttpStatus.OK;

}

实体如下：-

@Entity(name="Movie")
public class Movie {


    public Movie()
    {

    }
    public Movie(String name,MovieType type,Date releasedate,
          int movie_length, Genre genre)
    {
        this.name=name;
        this.type=type;
        this.releasedate=releasedate;
        this.movie_length=movie_length;
        this.genre=genre;
    }

    @Id
    @GeneratedValue(strategy= GenerationType.IDENTITY)
    @Column(name="Id")
    private long id;

    @Column(name="movie_name")
    @NotNull
    String name;
    @Enumerated(EnumType.STRING)
    //@NotNull
    MovieType type;
    @Column(name="release_date")
    @JsonFormat(shape=STRING, pattern="dd-MM-yyyy")
    //@NotNull
    Date releasedate;
    @Column(name="movie_length")
    //@NotNull
    int movie_length;
    @Column(name="like_percentage")
    float likepercentage;
    @Column(name="no_of_reactions")
    float no_of_reactions;
    @Column(name="avg_rating")
    float avg_rating;
    @Column(name="no_of_reviews")
    int no_of_reviews;
    @Column(name="director")
    @NotNull
    String director;
    @Transient
    List<String> cities;
    @Transient
    List<String> cast;

枚举如下：-

public enum MovieType {

    Hindi("Hindi"),
    English("English"),
    Telugu("Telugu"),
    Malyalam("Malyalam"),
    Kannada("Kannnada");

    private String name;

    public String getName() {
        return name;
    }

    MovieType(String name) {
        this.name = name;
    }


}

堆栈跟踪如下：-

路径为[]的上下文中的Servlet [dispatcherServlet]的Servlet.service（）抛出异常[请求处理失败；嵌套异常是java.lang.IllegalArgumentException：根本原因没有枚举常量com.example.Model.MovieType。

Answer 1

这是您的控制器的外观 （以下代码有效）：

@GetMapping(path = "/movies")
public Movie getMovie() {
    Movie movie = new Movie("name", MovieType.English, new Date(), 1, Genre.Action);
    return movie;
}

@PostMapping(path = "/movies")
public HttpStatus createMovie(@RequestBody Movie movie) {
    repository.save(movie);
    return HttpStatus.OK;
}

电影对象：

public class Movie {

    public String name;
    public Date releasedate;
    public MovieType type;
    public int movie_length;
    public Genre genre;

    public Movie() {}

    public Movie(String name, MovieType type, Date releasedate, int movie_length, Genre genre) {
        this.name = name;
        this.type = type;
        this.releasedate = releasedate;
        this.movie_length = movie_length;
        this.genre = genre;
    }
}

MovieType：

public enum MovieType {
    Hindi("Hindi"), English("English"), Telugu("Telugu"), Malyalam("Malyalam"), Kannada("Kannnada");

    private String name;

    public String getName() {
        return name;
    }

    MovieType(String name) {
        this.name = name;
    }
}

类型：

public enum Genre {
    Daram("Drama"), Action("Action");

    private String name;

    public String getName() {
        return name;
    }

    Genre(String name) {
        this.name = name;
    }
}

注释：

• 将Movie作为对象传递-不要使用JsonObject解析json
• 使用上述网址约定（即GET和POST的电影）
• 通过 getMovie（）获取电影对象，并使用其模板通过POST发送与 createMovie（）类似的对象。
• 使用Postman或任何其他Rest客户测试您的代码

示例POST请求：

{
    "name": "name",
    "releasedate": "2018-12-23T10:01:47.056+0000",
    "type": "English",
    "movie_length": 1,
    "genre": "Action"
}

确保将请求正文作为JSON发送：

祝你好运