rxjava+retrofit+okhttp

写一个接口等待实现,接口里面是请求方式

public interface ApiService {

    @GET
    Observable<String> get(@Url String url , @QueryMap Map<String,String> map);


    @FormUrlEncoded
    @POST
    Observable<String> post(@Url String url, @FieldMap Map<String,String> map);

}

创建一个RetrofitManager

public class RetrofitManager {

    public static OkHttpClient client = new OkHttpClient.Builder()
            .build();


    public static  ApiService  apiService = new Retrofit.Builder()
            .baseUrl("http://120.27.23.105/")
            .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
            .addConverterFactory(ScalarsConverterFactory.create())
            .client(client)
            .build()
            .create(ApiService.class);


    public static void get(String url, Map<String,String> map,Observer observer){

        apiService.get(url,map)
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(observer);

    }


    public static void post(String url,Map<String,String> map,Observer observer){
        apiService.post(url,map)
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(observer);
    }


}

写一个类继承Observer里面实现方法

public abstract class BaseObserver<T> implements Observer<String> {


    @Override
    public void onSubscribe(Disposable d) {

    }

    @Override
    public void onNext(String s) {



        try {
            Type genType = getClass().getGenericSuperclass();
            Type[] params = ((ParameterizedType) genType).getActualTypeArguments();
            Class entityClass = (Class) params[0];
            Gson gson = new Gson();
            T t = (T)gson.fromJson(s,entityClass);
            success(t);

        } catch (Exception e) {
            failure(1001);
            e.printStackTrace();
        }




    }

    @Override
    public void onError(Throwable e) {
        try {
            if(e != null){
                if(e instanceof HttpException){
                    failure(HTTP_ERROR);
                } else if(e instanceof SocketException){
                    failure(NET_WORK_ERROR);
                }else {
                    failure(UNKNOW_ERROR);
                }
            }else {
                failure(UNKNOW_ERROR);
            }
            e.printStackTrace() ;
        } catch (Exception e1) {
            failure(UNKNOW_ERROR);
            e1.printStackTrace();
        }


    }

    @Override
    public void onComplete() {

    }


    //

    /**
     * code
     *  1000 UNKNOW_ERROR 未知错误
     *  1001 json 转化异常  parse error
     *  1002 当前网络不可用     java.net.SocketException: Network is unreachable  超时
     *  1003 服务器不可用 401 402 403 500 502 503 504
     * @param code
     */

    public static final int UNKNOW_ERROR = 1000;
    public static final int JSON_FORMAT_ERROR = 1001;
    public static final int NET_WORK_ERROR = 1002;
    public static final int HTTP_ERROR = 1003;


    public abstract void success(T t);
    public abstract void failure(int code);

}