Android OKHTTP修改請求頭，Retrofit&Rxjava修改請求頭

1.Retrofit請求頭默認爲表單，將請求頭修改爲json

 添加註解@Headers

@Headers({"Content-Type: application/json", "Accept: application/json"})

2.OKHttp修改請求頭

 Request request = original.newBuilder()
                .header("Cookie", "設置的自定義的值")
                .header("Content-Type", "application/x-www-form-urlencoded")
                .header("X-Requested-With", "XMLHttpRequest")
                .method(original.method(), original.body())
                .build();
        /*builder.addHeader("Cookie", "設置的自定義的值")
                .addHeader("Content-Type", "application/x-www-form-urlencoded")
                .addHeader("X-Requested-With", "XMLHttpRequest");*/