如何在改造中从 json 对象键中删除白色 space？

Question

我有一个白色的字符串 space。改装时如何去除白色space。在下面的响应中，您可以看到 "Poster" 和 "Poster " （有白色 space）

改装时究竟需要在哪里处理这个json键来去除白色space？

{
    "movies": [{
        "Title": "TheAvengers ",
        "Year": "2012 ",
        "Rated": "PG-13 ",
        "Genre": "Action, Adventure, Sci-Fi ",
        "Actors": "Robert Downey Jr., Chris Evans, Mark Ruffalo, Chris Hemsworth ",
        "Plot": "Earth's mightiest heroes must come together and learn to fight as a team if they are going to stop the mischievous Loki and his alien army from enslaving humanity. ",
        "Language": "English, Russian, Hindi ",
        "Country": "USA ",
        "Poster": "https://m.media-amazon.com/images/M/MV5BNDYxNjQyMjAtNTdiOS00NGYwLWFmNTAtNThmYjU5ZGI2YTI1XkEyXkFqcGdeQXVyMTMxODk2OTU@._V1_SX300.jpg ",
        "Released": "04 May 2012 ",
        "Runtime": "143 min ",
        "Director": "Joss Whedon ",
        "Writer": "Joss Whedon (screenplay), Zak Penn (story), Joss Whedon (story) ",
        "Awards": "Nominated for 1 Oscar. Another 38 wins \u0026 79 nominations. "
    }, {
        "Title": "Sleepless ",
        "Year": "2017 ",
        "Rated": "R ",
        "Released": "13Jan 2017 ",
        "Runtime": "95 min ",
        "Genre": "Action, Crime, Thriller ",
        "Director": "Baran bo Odar ",
        "Writer": "Andrea Berloff (screenplay by), Frédéric Jardin (based on the film    Nuit blanche written by), Nicolas Saada (based on the film Nuit blanche written by), Olivier Douyère (based on the film    Nuit blanche   written by)",
        "Actors": "Jamie Foxx, Michelle Monaghan, Scoot McNairy, Dermot Mulroney ",
        "Plot": "A cop with a connection to the criminal underworld scours a nightclub in search of his kidnapped son. ",
        "Language": "English ",
        "Country": "USA ",
        "Awards": "1 nomination. ",
        "Poster ": "https://m.media-amazon.com/images/M/MV5BNjEwMDAyOTM4OV5BMl5BanBnXkFtZTgwMzc4MjMyMDI@._V1_SX300.jpg "
    }]}

下面是我所做的代码，我被绞死了，我需要删除海报的白色space。

Pojo Class:

public class Movies implements Serializable {
    @SerializedName("Title")
    private String Title;
    @SerializedName("Year")
    private String Year;
    @SerializedName("Rated")
    private String Rated;
    @SerializedName("Released")
    private String Released;
    @SerializedName("Runtime")
    private String Runtime;
    @SerializedName("Genre")
    private String Genre;
    @SerializedName("Director")
    private String Director;
    @SerializedName("Writer")
    private String Writer;
    @SerializedName("Actors")
    private String Actors;
    @SerializedName("Plot")
    private String Plot;
    @SerializedName("Language")
    private String Language;
    @SerializedName("Country")
    private String Country;
    @SerializedName("Awards")
    private String Awards;
    @SerializedName("Poster")
    private String Poster;


    // Getter Methods

    public String getTitle() {
        return Title;
    }

    public String getYear() {
        return Year;
    }

    public String getRated() {
        return Rated;
    }

    public String getReleased() {
        return Released;
    }

    public String getRuntime() {
        return Runtime;
    }

    public String getGenre() {
        return Genre;
    }

    public String getDirector() {
        return Director;
    }

    public String getWriter() {
        return Writer;
    }

    public String getActors() {
        return Actors;
    }

    public String getPlot() {
        return Plot;
    }

    public String getLanguage() {
        return Language;
    }

    public String getCountry() {
        return Country;
    }

    public String getAwards() {
        return Awards;
    }

    public String getPoster() {
        return Poster == null ? Uri.parse("R.drawable.ic_launcher_background").toString() : Poster;
    }

    // Setter Methods

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

    public void setYear(String Year) {
        this.Year = Year;
    }

    public void setRated(String Rated) {
        this.Rated = Rated;
    }

    public void setReleased(String Released) {
        this.Released = Released;
    }

    public void setRuntime(String Runtime) {
        this.Runtime = Runtime;
    }

    public void setGenre(String Genre) {
        this.Genre = Genre;
    }

    public void setDirector(String Director) {
        this.Director = Director;
    }

    public void setWriter(String Writer) {
        this.Writer = Writer;
    }

    public void setActors(String Actors) {
        this.Actors = Actors;
    }

    public void setPlot(String Plot) {
        this.Plot = Plot;
    }

    public void setLanguage(String Language) {
        this.Language = Language;
    }

    public void setCountry(String Country) {
        this.Country = Country;
    }

    public void setAwards(String Awards) {
        this.Awards = Awards;
    }

    public void setPoster(String Poster) {
        this.Poster = Poster;
    }
}

电影响应：

public class MovieResponse implements Serializable {
    @SerializedName("movies")
    private List<Movies> movies;

    public List<Movies> getMovies() {
        return movies;
    }

    public void setMovies(List<Movies> movies) {
        this.movies = movies;
    }
}

改装服务：

 public class RetrofitService {
    private static Retrofit retrofit = new Retrofit.Builder()
            .baseUrl("https://api.myjson.com/bins/")
            .addConverterFactory(GsonConverterFactory.create())
            .build();


    public static <S> S cteateService(Class<S> serviceClass) {
        return retrofit.create(serviceClass);
    }
}

MoviesRepository：（这里是我处理响应的地方）

    public class MoviesRepository {
        private static MoviesRepository moviesRepository;
        private MovieApiInterface newsApi;
        public static Application application;

        public static MoviesRepository getInstance() {
            if (moviesRepository == null) {
                moviesRepository = new MoviesRepository(application);
            }
            return moviesRepository;
        }
  public MoviesRepository(Application application) {
        this.application = application;
        newsApi = RetrofitService.cteateService(MovieApiInterface.class);
    }

    public MutableLiveData<MovieResponse> getMovieUpdates() {
        final MutableLiveData<MovieResponse> moviesData = new MutableLiveData<>();
        newsApi.getMovieDetails().enqueue(new Callback<MovieResponse>() {
            @Override
            public void onResponse(Call<MovieResponse> call, Response<MovieResponse> response) {
                GsonBuilder builder = new GsonBuilder();
                Gson mGson = builder.create();
                if (response.isSuccessful()) {
                    if(response.body()!=null) {
                        moviesData.setValue(response.body());
                    }
                }

            }

            @Override
            public void onFailure(Call<MovieResponse> call, Throwable t) {
                Log.i("RETROFIT RESPONSE", "Failure"+call.toString());
                Log.i("RETROFIT RESPONSE", "Failure"+t);
               // moviesData.setValue(null);

            }
        });
        return moviesData;
    }



      public interface MovieApiInterface {
        @GET("9xqev")
        Call<MovieResponse> getMovieDetails();
    }

我不知道我需要通过从 gson.FromJson 转换来更改海报密钥字符串来检查的地方。 有白色 space.

我使用了 MVVM，其中我得到的所有数据除了有白色的海报space。

public class MoviesViewModel extends AndroidViewModel {
    private MutableLiveData<MovieResponse> mutableLiveData;
    private MoviesRepository moviesRepository;

    public MoviesViewModel(@NonNull Application application) {
        super(application);
        moviesRepository = new MoviesRepository(application);
    }

    public void init() {
        if (mutableLiveData != null) {
            return;
        }
        moviesRepository = MoviesRepository.getInstance();
        mutableLiveData = moviesRepository.getMovieUpdates();
    }

    public MutableLiveData<MovieResponse> getNewsRepository() {
        return moviesRepository.getMovieUpdates();
    }
}

我尝试过的其他方法是：失败案例 1：
我无法在 Serializable

中放置两张带有白色 space 的海报

@SerializedName("Poster")
    private String Poster;

@SerializedName("Poster ") // with whitespace.
    private String Poster;

失败案例 2：（使用 trim 但这仅反映值而非键）

public String getPoster() {
        return Poster == null ? Uri.parse("R.drawable.ic_launcher_background").toString() : Poster.trim();
    }

Answer 1

尝试使用 getter 函数的好处

public String getTitle() {
        return Title.trim();
    }

和其他人一样。尝试使用这个，如果这不能帮助我在评论中告诉我，我们会找到另一个解决方案

Answer 2

@SerializedName(value="Poster", alternate={"Poster ", "Pöster"})
String poster;

这似乎不起作用，请参阅评论，对于修剪后的替代品，给出相同的名称。

Answer 3

在您的项目中使用此代码：

String strRemoveSpace= getPoster().toString().replaceAll("\s", ""); // using built in method  
System.out.println(strRemoveSpace);

Answer 4

让我根据@JoopEggen 的回答和评论进行简化。

当您应用两个字段时

 @SerializedName(value="Poster", alternate={"Poster ", "Pöster"})
  String poster;

它抛出 "You can't declare multiple JSON fields named Poster"

那么解决方案是什么，

//assign a dummy json field as images and replace with poster

@SerializedName(value = "Images", alternate = {"Poster"}) //no whitespace
    private String Images;


@SerializedName("Poster ") //with white space
    private String Poster;

在来自 getter setter 的适配器中处理这两个图像。

   String poster= movies.get(position).getPoster(); //Poster with whitespace
    String image = movies.get(position).getImages(); //Poster without whitespace

如何在改造中从 json 对象键中删除白色 space？

How to remove white space from json object key in retrofit?

java

android

json

android-lifecycle

retrofit2