android - 将 JWT 身份验证 token 添加到 OkHttp、Dagger 2 和 Retrofit

Question

关注帖子 Dagger + Retrofit. Adding auth headers at runtime我正在尝试配置 okHttp 并通过添加拦截器将 jwt auth key 添加到 okHttp，为此我创建了单独的拦截器并将其添加到 Dagger 的组件中，以便它可以在任何地方公开。

现在，一旦我点击登录，我就获得了 token ，使用 JwtAuthenticationInterceptor 类的 setJwtToken() 方法设置它，当我尝试使用下一个端点时，我收到 401 错误，因为 jwtToken 即将变为空，即使我有设置它。

下面我附上了我的拦截器、组件和模块代码快照。

模块

@Provides
    @Singleton
    OkHttpClient provideOkhttpClient(Cache cache) {
        OkHttpClient.Builder client = new OkHttpClient.Builder();
        client.addInterceptor(provideHeaderInterceptor());
        client.cache(cache);
        return client.build();
    }


    @Provides
    @Singleton
    Retrofit provideRetrofit(OkHttpClient okHttpClient) {
        return new Retrofit.Builder()
                .addConverterFactory(GsonConverterFactory.create())
                .baseUrl(mBaseUrl)
                .client(okHttpClient)
                .build();
    }

    @Provides
    @Singleton
    JwtAuthenticationInterceptor provideHeaderInterceptor(){
        return new JwtAuthenticationInterceptor();
    }

组件

@Component(modules = {AppModule.class, ApiModule.class, StorageModule.class})
@Singleton
public interface NetComponent {
    Retrofit retrofit();
    OkHttpClient okHttpClient();
    SharedPreferences sharedPreferences();
    Gson gson();
    Cache cache();
    KRITILog log();
    JwtAuthenticationInterceptor headerInterceptor();
}

JwtAuthenticationInterceptor.java

@Singleton
public class JwtAuthenticationInterceptor implements Interceptor {
    private String jwtToken;

    @Inject
    public JwtAuthenticationInterceptor() { }

    public void setJwtToken(String jwtToken) {
        this.jwtToken = jwtToken;
    }

    @Override
    public Response intercept(Chain chain) throws IOException {
        Request original = chain.request();

        Request.Builder builder = original.newBuilder()
                .header("Authorization","Bearer " +jwtToken);
                        //String.format("Bearer %s", jwtToken));

        Request request = builder.build();
        return chain.proceed(request);
    }
}

Answer 1

问题是这一行

client.addInterceptor(provideHeaderInterceptor());

您正在创建 JwtAuthenticationInterceptor 的新实例，与 dagger 提供的实例不同。 JwtAuthenticationInterceptor 应该是该方法的依赖项。例如

@Provides
@Singleton
OkHttpClient provideOkhttpClient(Cache cache, JwtAuthenticationInterceptor interceptor) {
    OkHttpClient.Builder client = new OkHttpClient.Builder();
    client.addInterceptor(interceptor);
    client.cache(cache);
    return client.build();
}