Android(安卓)Retrofit网络框架 (一)

1、基础使用

a、Retrfit2的GET请求

第一步，配置Retrfit的基本配置

Retrofit retrofit = new Retrofit.Builder()                .baseUrl("http://gc.ditu.aliyun.com/")//服务端共用的baseUrl                .addConverterFactory(GsonConverterFactory.create())//如果将服务端返回的json格式转为JavaBean,需要添加这一行代码                .build();        Api api = retrofit.create(Api.class);        Map map = new HashMap<>();        map.put("a","郑州市");        Call call = api.getUserinfoMap(map);//第一种map传参        //Call call = api.getUserinfo("郑州市");//第二种直接传参        //Call call = api.getUser();//第三种直接写死参数        call.enqueue(new Callback() {            @Override            public void onResponse(Call call, Response response) {                UserBean userBean = response.body();                Log.e("TAG", userBean.toString());                showToast(userBean.toString());            }            @Override            public void onFailure(Call call, Throwable t) {                Log.e("TAG", t.toString());                showToast(t.toString());            }        });

第二步配置接口地址

public interface Api {    /**     * 第一种GET传参写法(参数直接写死)     * a  ：  参数名     * city  ：  传进来的值是参数值     */    @GET("geocoding")    Call getUserinfo(@Query("a") String city);    /**     * 第二种GET传参写法(参数写活)     */    @GET("geocoding?a=郑州市")    Call getUser();    /**     * 第三种GET传参方式(用map写活)     * */    @GET("geocoding")    Call getUserinfoMap(@QueryMap Map map);}

第三步添加Javabean

public class UserBean {    /**     * lon : 120.58531     * level : 2     * address :     * cityName :     * alevel : 4     * lat : 31.29888     */    private double lon;    private int level;    private String address;    private String cityName;    private int alevel;    private double lat;    public double getLon() {        return lon;    }    public void setLon(double lon) {        this.lon = lon;    }    public int getLevel() {        return level;    }    public void setLevel(int level) {        this.level = level;    }    public String getAddress() {        return address;    }    public void setAddress(String address) {        this.address = address;    }    public String getCityName() {        return cityName;    }    public void setCityName(String cityName) {        this.cityName = cityName;    }    public int getAlevel() {        return alevel;    }    public void setAlevel(int alevel) {        this.alevel = alevel;    }    public double getLat() {        return lat;    }    public void setLat(double lat) {        this.lat = lat;    }    @Override    public String toString() {        return "UserBean{" +                "lon=" + lon +                ", level=" + level +                ", address='" + address + '\'' +                ", cityName='" + cityName + '\'' +                ", alevel=" + alevel +                ", lat=" + lat +                '}';    }}

2、Retrofit2的post使用

第一步配置Retrofit

Retrofit retrofit = new Retrofit.Builder()                .baseUrl("http://fanyi.youdao.com/")                .addConverterFactory(GsonConverterFactory.create())                .build();        Api api = retrofit.create(Api.class);        Call beanCall = api.postInfo("你好");        beanCall.enqueue(new Callback() {            @Override            public void onResponse(Call call, Response response) {                showToast(response.body().getTranslateResult().get(0).get(0).toString());            }            @Override            public void onFailure(Call call, Throwable t) {                Log.e("TAG", t.toString());                showToast(t.toString());            }        });

第二步创建接口

/**     * 第一种POST传参     */    @POST("translate?doctype=json&jsonversion=&type=&keyfrom=&model=&mid=&imei=&vendor=&screen=&ssid=&network=&abtest=")    @FormUrlEncoded    Call postInfo(@Field("i") String targetSentence);

3、form-data表单post提交文件携带参数上传

1)、创建接口

@POST("xxx")Observable postLog(@Body RequestBody body);

2、具体上传操作

Api api = RetrofitClint.getApi();File file = new File(file);RequestBody requestBody = new MultipartBody.Builder().setType(MultipartBody.FORM)        .addFormDataPart("key1", "value1")//参数1        .addFormDataPart("key2", "value2")//参数2        .addFormDataPart("filedata", file.getName(), RequestBody.create(MediaType.parse("multipart/form-data"), file))                .build();        Observable observable = api.postLog(requestBody);//第二种直接传参        Subscription subscription = observable.subscribeOn(Schedulers.io())                .observeOn(AndroidSchedulers.mainThread())                .subscribe(new Subscriber() {                    @Override                    public void onCompleted() {                    }                    @Override                    public void onStart() {                        super.onStart();                    }                    @Override                    public void onError(Throwable e) {                        Logger.d(TAG, "334-e：" + e.toString());                        if (listener != null) {                            listener.onError(e.toString());                        }                    }                    @Override                    public void onNext(LogBean bean) {                        if (bean != null) {                            Logger.d(TAG, "bean:" + bean.toString());                            if (listener != null) {                                listener.onSuccess(bean);                            }                        }                    }                });

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