使用Retrofit 2向所有请求添加标头

OkHttpClient.Builder httpClient = new OkHttpClient.Builder();

httpClient.addInterceptor(new Interceptor() {    @Override    public Response intercept(Chain chain) throws IOException {        Request request = chain.request().newBuilder().addHeader("parameter", "value").build();        return chain.proceed(request);    }});Retrofit retrofit = new Retrofit.Builder().addConverterFactory(GsonConverterFactory.create()).baseUrl(url).client(httpClient.build()).build();