如何使用 jax -rs 创建 POST 请求

Question

我有两个类 PlaylistResource，它们有一个方法 createPlaylist，它采用 PlaylistRequest 类型的对象。我想在 localhost:9999/playlists 上创建一个 POST 请求我正在使用 Postman，但我不确定如何将作为请求的 PlaylistRequest 对象传递给方法 createPlaylist。

@XmlType(propOrder= {"title", "artistSeeds", "numberOfSongs"})
@XmlAccessorType(XmlAccessType.FIELD)
public class PlaylistRequest {

    private String title = "";
    @XmlElement(name = "seeds")
    private List<String> artistSeeds;
    @XmlElement (name = "size")
    private int numberOfSongs = 0;

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public List<String> getArtistSeeds() {
        return artistSeeds;
    }

    public void setArtistSeeds(List<String> artistSeeds) {
        this.artistSeeds = artistSeeds;
    }

    public int getNumberOfSongs() {
        return numberOfSongs;
    }

    public void setNumberOfSongs(int numberOfSongs) {
        this.numberOfSongs = numberOfSongs;
    }
}

另一个类：

@Path("playlists")
public class PlaylistResource implements PlaylistApi {

    @Override
    @POST
    @Consumes(MediaType.APPLICATION_JSON)
    @Produces(MediaType.APPLICATION_JSON)
    public Response createPlaylist(PlaylistRequest request) {

        if(request == null) {
            System.out.println("Was here");
            throw new ClientRequestException(new ErrorMessage("no parameter passed."));
        }

        try {
            List<Song> playList = new ArrayList<>();
            List<Song> songs = new ArrayList<>();
            List<String> artistsIds = new ArrayList<>();
            ArtistResource artistsResources = new ArtistResource();
            int playlistDefaultSize = 10;

            int i = 0;
            do {
                playList.add(songs.get(i));
                i++;
            }while( i < playlistDefaultSize);

            Playlist playlist = new Playlist();
            playlist.setTitle(request.getTitle());
            playlist.setSize(songs.size());
            playlist.setTracks(playList);

            return Response.status(Response.Status.CREATED.getStatusCode()).entity(playlist).build();
        } catch (Exception e) {
            throw new RemoteApiException(new ErrorMessage(e.getMessage()));
        }
    }

}

Answer 1

把这个参数从数据类改成字符串，

public Response createPlaylist(PlaylistRequest request) {

到

public Response createPlaylist(String request) {

然后使用 GSON 将其转换为您的数据类。

PlaylistRequest request = new Gson().fromJson(request, new TypeToken<PlaylistRequest >(){}.getType());

Answer 2

只需在请求的Body 中添加一个JSON 对象，在Postman 中选择Raw Json 并粘贴以下对象：

注意：在Request的Header中添加一个键Content-Type并将其值设置为application/json

{
  "title": "Some title",
  "artistSeeds": [
    "string1",
    "string2"
  ],
  "numberOfSongs": 0
}

标题 身体