java customization builder_java – 改造界面的设计模式
我的Retrofit界面创建器的设计有问题.我希望能够以通用方式实现API接口,并在传递令牌时更新相应的实例.目前,当我更新令牌时,我必须再次调用createService()方法来获取在生成接口时使用令牌的新实例…
有人问了类似的问题,但从来没有得到答案here
public class RetrofitCreator {
private static String TAG = "RetrofitCreator";
private static String WSSE = null;
private static String AmzToken = null;
static HttpLoggingInterceptor interceptor = new HttpLoggingInterceptor();
private static AmazonAPI amazonAPI = null;
private static VanishAPI cobaltAPI = null;
//static OkHttpClient client = new OkHttpClient.Builder().build();
static OkHttpClient.Builder httpClient = new OkHttpClient.Builder().addInterceptor(interceptor.setLevel(HttpLoggingInterceptor.Level.BODY));
private static Retrofit.Builder builder =
new Retrofit.Builder();
public static S createService(Class serviceClass) {
S mAPI = null;
if(serviceClass.getSimpleName().equals("VanishAPI")){
if(VanishAPI==null){
VanishAPI = (VanishAPI) createVanishAPI(serviceClass);
}
mAPI = (S) VanishAPI;
}else if(serviceClass.getSimpleName().equals("AmazonAPI")){
if(amazonAPI==null){
amazonAPI = (AmazonAPI) createAmazonAPI(serviceClass);
}
mAPI = (S) amazonAPI;
}
return mAPI;
}
public static void setWSSE(String WSSE) {
RetrofitCreator.WSSE = WSSE;
vanishAPI = createVanishAPI(VanishAPI.class);
}
public static void setAmzToken(String token) {
RetrofitCreator.AmzToken = token;
amazonAPI = createAmazonAPI(AmazonAPI.class);
}
private static S createAmazonAPI(Class serviceClass){
httpClient = getUnsafeOkHttpClient();
builder = new Retrofit.Builder()
.baseUrl(Constants.URL_AMAZON)
.addConverterFactory(JacksonConverterFactory.create());
if (AmzToken != null) {
Log.w(TAG, "WSSE not null!");
Interceptor interceptorSecure = new Interceptor() {
@Override
public Response intercept(Interceptor.Chain chain) throws IOException {
Request original = chain.request();
// Request customization: add request headers
Request.Builder requestBuilder = original.newBuilder()
.header("Cache-Control", "no-cache")
.header("Accept", "application/json")
.header("Authorization", "Bearer " + AmzToken)
.method(original.method(), original.body());
Request request = requestBuilder.build();
return chain.proceed(request);
}
};
httpClient.addInterceptor(interceptorSecure);
}
OkHttpClient client = httpClient.build();
Retrofit retrofit = builder.client(client).build();
return retrofit.create(serviceClass);
}
(...)
}
要在我使用的每个Activity中获取它：
amazonApi = RetrofitCreator.createService(AmazonAPI.class);