<Retrofit2> 添加header和baseparam

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一.添加header

1.请求拦截器：

方式一:    OkHttpClient.Builder httpClient = new OkHttpClient.Builder();          httpClient.addInterceptor(new Interceptor() {              @Override            public Response intercept(Interceptor.Chain chain) throws IOException {                Request original = chain.request();                Request request = original.newBuilder()                    .header("User-Agent", "Your-App-Name")                    .header("Accept", "application/vnd.yourapi.v1.full+json")                    .method(original.method(), original.body())                    .build();                return chain.proceed(request);            }    }    方式二:    OkHttpClient.Builder httpClient = new OkHttpClient.Builder();          httpClient.addInterceptor(new Interceptor() {              @Override            public Response intercept(Interceptor.Chain chain) throws IOException {                Request original = chain.request();                Request request = original.newBuilder()                    .addHeader("Cache-Control", "no-cache")                    .addHeader("Cache-Control", "no-cache")                    .method(original.method(), original.body())                    .build();                return chain.proceed(request);            }    }    OkHttpClient client = httpClient.build();      Retrofit retrofit = new Retrofit.Builder()          .baseUrl(API_BASE_URL)        .addConverterFactory(GsonConverterFactory.create())        .client(client)        .build();    OkHtt请求头通过拦截器添加Header，两种方式的不同    .header(key, val):如果key相同，最后一个val会将前面的val值覆盖    .addHeader(key, val):如果key相同，最后一个val不会将前面的val值覆盖，而是新添加一个Header

2.动态添加

@GET("get.php")        Call<StoryResponse> getPhp(@Header("headerType") String type);

 @GET("get.php")        Call<StoryResponse> getPhp(@HeaderMap  Map<String,String> type);

3.静态添加

@Headers("headertype:2")        @GET("get.php")        Call<StoryResponse> getPhp();

  @Headers({"headertype:2","type:3"})        @GET("get.php")        Call<StoryResponse> getPhp();

二 .添加baseParam

为所有的网络请求添加公用的param，如uid，imei等，仍然使用到了拦截器：

 //base节点拦截器        Interceptor baseParamInterceptor = new Interceptor() {            @Override            public Response intercept(Chain chain) throws IOException {                Request original = chain.request();                HttpUrl originalUrl = original.url();                HttpUrl url = originalUrl.newBuilder()                        .addQueryParameter("apikey","1234")                        .addQueryParameter("imei","1456").build();                Request.Builder requestBuilder = original.newBuilder().url(url);                Request request = requestBuilder.build();                return chain.proceed(request);            }        };

然后添加拦截器就可以了：

 //定制OkHttp        OkHttpClient.Builder httpClientBuilder = new OkHttpClient                .Builder();        //OkHttp进行添加拦截器loggingInterceptor        httpClientBuilder..addInterceptor(headerInterceptor);        return httpClientBuilder.build();

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