添加請求頭

1.先實現Heaner

public class Heaner implements Interceptor {
    @Override
    public Response intercept(Chain chain) throws IOException {
        Request request = chain.request();
        Request.Builder builder = request.newBuilder();
        builder.addHeader("userId","2818");
        builder.addHeader("sessionId","15563274234822818");
        Request request1 = builder.build();
        return chain.proceed(request1);
    }
}