使用 apiKey 时无法从 NewsAPI 获取数据

Question

MainActivity.java

        RetrofitInstance.getInstance().api.getPosts("everything").enqueue(new Callback<Post>() {
        @Override
        public void onResponse(@NonNull Call<Post> call, @NonNull Response<Post> response) {
            Post posts = response.body();
            Toast.makeText(context, Objects.requireNonNull(posts).getArticles().get(0).getTitle(), Toast.LENGTH_SHORT).show();
        }

        @Override
        public void onFailure(@NonNull Call<Post> call, @NonNull Throwable t) {

        }
    });

API.java

public interface Api {
    @Headers("apiKey: <Secret Key>")
    @GET("v2/{newsType}/")
    Call<Post> getPosts(@Path("newsType") String newsType);
}

RetroInterface.java

public class RetrofitInstance {
    public static RetrofitInstance instance;
    Api api;

    RetrofitInstance() {
        Retrofit retrofit = new Retrofit.Builder()
                .baseUrl("https://newsapi.org/")
                .addConverterFactory(GsonConverterFactory.create())
                .build();
        api = retrofit.create(Api.class);
    }

    public static RetrofitInstance getInstance() {
        if (instance == null) {
            instance = new RetrofitInstance();
        }
        return instance;
    }
}

Post.java

public class Post {
private ArrayList<Articles> articles;

public ArrayList<Articles> getArticles() {
    return articles;
}

}

Articles.java

public class Articles {

    private String urlToImage, title, details, author;

    public String getUrlToImage() {
        return urlToImage;
    }

    public String getTitle() {
        return title;
    }

    public String getDetails() {
        return details;
    }

    public String getAuthor() {
        return author;
    }
}

错误： com.newsapi.app.EverythingFragment$1.onResponse(EverythingFragment.java:53) 在retrofit2.DefaultCallAdapterFactory$ExecutorCallbackCall$1.lambda$onResponse$0$retrofit2-DefaultCallAdapterFactory$ExecutorCallbackCall$1(DefaultCallAdapterFactory.java:89)

Answer 1

我们必须使用查询字符串参数来传递 apiKey，而不是通过标头传递。看看下面的例子：

API.java

public interface Api {
@GET("v2/{newsType}?q=a&apiKey=<Secret-Key>")
Call<Post> getPosts(@Path("newsType") String newsType);
}

你必须输入你的 API 密钥，代码才能完美运行。