添加标题到所有请求与改造2 [英] Adding header to all request with Retrofit 2

问题描述

Retrofit 2的文档说：

需要添加到每个请求的标题可以使用OkHttp拦截器指定。

Headers that need to be added to every request can be specified using an OkHttp interceptor.

它可以可以使用以前的版本轻松完成，这里是相关的质量保证。

It can be done easily using the previous version, here's the related QA.

但是使用retrofit 2，我找不到像 setRequestInterceptor 或 setInterceptor 方法可以应用于 Retrofit.Builder 对象。

But using retrofit 2, I couldn't find something like setRequestInterceptor or setInterceptor method that can be applied to Retrofit.Builder object.

另外，似乎 OkHttp 中没有 RequestInterceptor 了。 Retrofit的文档指向我们拦截器，我不太明白如何使用它

Also it seems that there's no RequestInterceptor in OkHttp anymore. Retrofit's doc refers us to Interceptor that I didn't quite understand how to use it for this purpose.

我该怎么做？

How can I do this?

推荐答案

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();

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