ApiServices:

public interface ApiServices {
    //post請求:第一個引數url，可以傳遞為空，不能不寫，第二個map集合為引數
    @POST
    Observable<PageBean> postPage(@Url String url, @QueryMap Map<String,String> map);
    //get請求:直接把引數拼接成url即可
    @GET
    Observable<PageBean> getPage(@Url String url);
}

get請求:

public
 
 void get(){
        Retrofit retrofit = new Retrofit.Builder()
                .addConverterFactory(GsonConverterFactory.create())
                .addCallAdapterFactory(RxJavaCallAdapterFactory.create())
                //baseUrl:引數之前的部分
                .baseUrl("https://api.tianapi.com/wxnew/")
                .build();
        ApiServices services = retrofit.create(ApiServices.class);
        //params1:所有引數進行拼接就可以
 

        Observable<PageBean> observable = services.getPage("?key=8d6e3228d25298f13af4fc40ce6c9679&page=1&num=10");
        observable.subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(new Observer<PageBean>() {
                    @Override
 

                    public void onCompleted() {

                    }

                    @Override
                    public void onError(Throwable e) {
                        Log.d("heihei", "onError: 失敗");
                        e.printStackTrace();
                    }

                    @Override
                    public void onNext(PageBean pageBean) {
                        Log.d("heihie", "onNext: " + pageBean.getMsg());
                    }
                });
    }

post請求:

 public void post(){
        Retrofit retrofit = new Retrofit.Builder()
                .addCallAdapterFactory(RxJavaCallAdapterFactory.create())
                .addConverterFactory(GsonConverterFactory.create())
                //baseUrl:引數之前的部分
                .baseUrl("https://api.tianapi.com/wxnew/").build();
        ApiServices services = retrofit.create(ApiServices.class);
        HashMap<String,String> map = new HashMap<>();
        map.put("key","8d6e3228d25298f13af4fc40ce6c9679");
        map.put("num","10");
        map.put("page","2");
        //parames1:url傳空字串就可以，但是不能不寫
        Observable<PageBean> postPage = services.postPage("", map);
        postPage.subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(new Observer<PageBean>() {
                    @Override
                    public void onCompleted() {

                    }

                    @Override
                    public void onError(Throwable e) {
                        Log.d("heihei", "onError: 失敗");
                        e.printStackTrace();
                    }

                    @Override
                    public void onNext(PageBean pageBean) {
                        Log.d("heihie", "onNext: " + pageBean.getMsg());
                    }
                });
    }

依賴:

   compile 'com.squareup.retrofit2:retrofit:2.1.0'
    compile 'com.squareup.retrofit2:converter-gson:2.1.0'
    compile 'com.squareup.retrofit2:adapter-rxjava:2.0.1'
    compile 'io.reactivex:rxandroid:1.1.0'