Retrofit2.0在android项目中的使用

Retrofit2.0github官方文档 

 Retrofit2.0简介:

Retrofit2.0是Square公司出品的针对于Android和Java的类型安全的Http客户端,网络请求是基于OkHttp.

Retrofit2.0的改进

Retrofit2.0的使用:

下载jar包

Gradle:配置:

compile 'com.squareup.retrofit2:retrofit:2.1.0'

用法介绍:

创建接口 NetworkService.java

Public Interface NetworkService{

/**     *   获取码表数据     * @param info     * @return     */    @POST("getCodeList")    Call<CodeListResponse> getCodeList(@Body EncryptUpload info) ;

}

创建ApiService.java

public class ApiService {    private  Retrofit retrofit ;    private static NetworkService networkService ;    private static ApiService ourInstance ;    public static ApiService getInstance() {        if (ourInstance==null) {            ourInstance = new ApiService();        }        return ourInstance;    }    private ApiService() {        retrofit=  RetrofitManager.builder();        networkService= retrofit.create(NetworkService.class);    }    /***     * 获取码表数据     */    public  void getCodeList(JSONObject json,  Callback callback){        EncryptUpload encryptUpload = toEncry(json,"getCodeList");        Call<CodeListResponse>  call =  networkService.getCodeList(encryptUpload);        call.enqueue(callback);    }

}

在外部调用:

private  void getCodeList(){        if (AppConfig.IS_OFFLINE) return;        JSONObject jsonObject = new JSONObject();        String  lastUpdateTime =   PreferenceUtil.getStringData(this, AppConfig.PRE_CODE_LATEST_UPDATED_TIME);        try {            jsonObject.put("lastUpdateTime",lastUpdateTime);            ApiService.getInstance().getCodeList(jsonObject, new Callback<CodeListResponse>() {                @Override                public void onResponse(Call<CodeListResponse> call, Response<CodeListResponse> response) {                    if (!response.isSuccessful()){                        ToastUtil.show(getBaseContext(),"请求异常");                        return;                    }                    if(AppConfig.handleResponse(MainActivity.this,(BaseResponse)response.body())){                        List<CodeList>  addList    =response.body().getAddList();                        List<CodeList>  updateList    =response.body().getUpdateList();                        List<Integer>  deleteList    =response.body().getDeleteList();                        try {                            //模板 更新                            if (addList!=null&&addList.size()>0)                                CreditApplication.getDbManager().saveOrUpdate(addList);                            if (updateList!=null&&updateList.size()>0)                                CreditApplication.getDbManager().saveOrUpdate(updateList);                            if (deleteList!=null&&deleteList.size()>0)                                CreditApplication.getDbManager().deleteById(CodeList.class,deleteList);                            //时间 更新                            PreferenceUtil.setStringData(getBaseContext(), AppConfig.PRE_CODE_LATEST_UPDATED_TIME,response.body().getLastUpdateTime());                        } catch (DbException e) {                            e.printStackTrace();                        }                    }                }                @Override                public void onFailure(Call<CodeListResponse> call, Throwable t) {                }            });        } catch (JSONException e) {            e.printStackTrace();        }    }

RetrofitManager.java

import com.psbc.credit.AppConfig;import com.psbc.credit.CreditApplication;import com.psbc.credit.util.NetworkUtil;import java.io.File;import java.io.IOException;import java.util.concurrent.TimeUnit;import okhttp3.Cache;import okhttp3.CacheControl;import okhttp3.Interceptor;import okhttp3.OkHttpClient;import okhttp3.Request;import okhttp3.logging.HttpLoggingInterceptor;import retrofit2.Retrofit;import retrofit2.adapter.rxjava.RxJavaCallAdapterFactory;import retrofit2.converter.gson.GsonConverterFactory;/** * Created by rance on 2016/11/10. */public class RetrofitManager {    //短缓存有效期为1分钟    public static final int CACHE_STALE_SHORT = 60;    //长缓存有效期为7天    public static final int CACHE_STALE_LONG = 60 * 60 * 24 * 7;    public static final String CACHE_CONTROL_AGE = "Cache-Control: public, max-age=";    //查询缓存的Cache-Control设置，为if-only-cache时只查询缓存而不会请求服务器，max-stale可以配合设置缓存失效时间    public static final String CACHE_CONTROL_CACHE = "only-if-cached, max-stale=" + CACHE_STALE_LONG;    //查询网络的Cache-Control设置，头部Cache-Control设为max-age=0时则不会使用缓存而请求服务器    public static final String CACHE_CONTROL_NETWORK = "max-age=0";    private static OkHttpClient mOkHttpClient;    private static Retrofit retrofit;    public static Retrofit builder(){        return new RetrofitManager().retrofit;    }    private RetrofitManager() {        initOkHttpClient();         retrofit = new Retrofit.Builder()                .baseUrl(AppConfig.HOST_URL)                .client(mOkHttpClient)                .addCallAdapterFactory(RxJavaCallAdapterFactory.create())                .addConverterFactory(GsonConverterFactory.create())                .build();    }    private void initOkHttpClient() {        HttpLoggingInterceptor interceptor = new HttpLoggingInterceptor();        interceptor.setLevel(HttpLoggingInterceptor.Level.BODY);        if (mOkHttpClient == null) {            synchronized (RetrofitManager.class) {                if (mOkHttpClient == null) {                    // 指定缓存路径,缓存大小100Mb                    Cache cache = new Cache(new File(CreditApplication.getContext().getCacheDir(), "HttpCache"),                            1024 * 1024 * 100);                    mOkHttpClient = new OkHttpClient.Builder()                            .cache(cache)                            .addInterceptor(mRewriteCacheControlInterceptor)                            .addNetworkInterceptor(mRewriteCacheControlInterceptor)                            .addInterceptor(interceptor)                            .retryOnConnectionFailure(true)                            .connectTimeout(15, TimeUnit.SECONDS)                            .readTimeout(60,TimeUnit.SECONDS)                            .writeTimeout(60,TimeUnit.SECONDS)                            .build();                }            }        }    }    // 云端响应头拦截器，用来配置缓存策略    private Interceptor mRewriteCacheControlInterceptor = new Interceptor() {        @Override        public okhttp3.Response intercept(Chain chain) throws IOException {            Request request = chain.request();            if (!NetworkUtil.isNetworkConnected()) {                request = request.newBuilder().cacheControl(CacheControl.FORCE_CACHE).build();            }            okhttp3.Response originalResponse =  chain.proceed(request);            if (NetworkUtil.isNetworkConnected()) {                //有网的时候读接口上的@Headers里的配置，你可以在这里进行统一的设置                String cacheControl = request.cacheControl().toString();                return originalResponse.newBuilder().header("Cache-Control", cacheControl)                        .removeHeader("Pragma").build();            } else {                return originalResponse.newBuilder()                        .header("Cache-Control", "public, only-if-cached, max-stale=" + CACHE_STALE_LONG)                        .removeHeader("Pragma").build();            }        }    };}

个人使用到其他相关jar包:

okhttp与okio.zip(内包含两个jar包)  okio-1.8.0.jar   okhttp-3.3.1.jar

gson-2.7.jar

retrofit-2.1.0.jar