Retrofit2 添加header和baseparam

本文主要是介绍Retrofit2 添加header和baseparam，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

一.添加header

1.请求拦截器：

方式一:OkHttpClient.Builder httpClient = new OkHttpClient.Builder();  httpClient.addInterceptor(new Interceptor() {  @Overridepublic 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() {  @Overridepublic 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() {@Overridepublic 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OkHttpOkHttpClient.Builder httpClientBuilder = new OkHttpClient.Builder();//OkHttp进行添加拦截器loggingInterceptorhttpClientBuilder..addInterceptor(headerInterceptor);return httpClientBuilder.build();

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