Android-Retrofit示例
2018-02-11 本文已影响46人
CokeNello
0. Thanks
Android Retrofit2 Post请求添加Json类型参数笔记
1. Header
- 1）使用注解，Header是固定的
public interface ApiService {
@Headers("Cache-Control: max-age=560000")
@GET("/data")
Call<List<Data>> getData();
}
- 2）使用注解，添加多个固定的Header
public interface ApiService {
@Headers({
"Accept: application/vnd.yourapi.v1.full+json",
"User-Agent: YourAppName"
})
@GET("/data/{user_id}")
Call<Data> getData(@Path("user_id") long userId);
}
- 3）使用注解的方式，header参数每次都不同，动态添加header
public interface ApiService {
@GET("/data")
Call<List<Data>> getData(@Header("Content-Range") String contentRange);
}
- 4）使用注解，动态添加多个Headers
public interface ApiService {
@GET("/data")
Call<ResponseBody> list(@HeaderMap Map<String, String> headers);
}
- 5）在拦截器里面，代码动态添加Header
OkHttpClient.Builder client = new OkHttpClient.Builder();
client.addInterceptor(new Interceptor() {
@Override
public Response intercept(Interceptor.Chain chain) throws IOException {
Request original = chain.request();
Request request = original.newBuilder()
.header("User-Agent", "YourAppName")
.header("Accept", "application/vnd.yourapi.v1.full+json")
.method(original.method(), original.body())
.build();
return chain.proceed(request);
}
}
OkHttpClient httpClient = client.build();
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(Constant.BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.client(httpClient)
.build();
2. Get
假设BaseURL为https://192.168.1.101/api/
普通的请求：https://192.168.1.101/api/MovieList
@GET("MovieList")
Observable<ResultEntity<MovieEntity>> getMovieList();
URL中参数有变：https://192.168.1.101/api/MovieList/{2018}，{2018}是用户ID，会变化
@GET("MovieList/{movieId}")
Observable<ResultEntity<MovieEntity>> getMovieList(@Path("movieId") String movieId );
URL中参数有变：https://192.168.1.101/api/MovieList/{2018}/{comedy}，后面的两个参数会变
@GET("MovieList/{movieId}/{type}")
Observable<ResultEntity<MovieEntity>> getMovieList(@Path("movieId") String movieId ,@Path("type") String type);
URL中参数在问号后，即是参数拼接在URL后面：https://192.168.1.101/api/MovieList?movieId=10011&type=3
@GET("MovieList")
Observable<ResultEntity<MovieEntity>> getMovieList(@Query("movieId") String movieId,@Query("type") int type);
URL中参数在问号后，既是参数拼接在URL后面，而且参数不固定：https://192.168.1.101/api/MovieList?movieId=10011&type=4&year=2013&......
@GET("MovieList")
Observable<ResultEntity<MovieEntity>> getMovieList(@QueryMap Map<String ,Object> map);
3. POST
假设BaseURL为https://192.168.1.101/api/
url中含有可变参数，post的数据只有一个type：https://192.168.1.101/api/MovieList/2018
@FormUrlEncoded
@POST("MovieList/{movieId}")
Observable<ResultEntity<MovieEntity>> getMovieList(@Path("movieId") String movieId, @Field("type") String type);
url中含有可变参数、问号之后需要加入token，post的数据为一个对象（json串）：
https://192.168.1.101/api/MovieList/2018?token=4654551321563132fasd5645ds3
@POST("MovieList/{movieId}")
Observable<ResultEntity<MovieEntity>> getMovieList(@Path("movieId") String movieId,
@Query("token") String token,
@Body MovieEntity entity);
POST文件上传
API描述
Hy_Base_Url_Upload = "http://abc/api/upload/image"
参数1：sn , 设备号
参数2：description , 图片的描述
参数3：scan_image , 图片文件
接口声明如下
public interface Hy {
@Multipart
@POST("image")
Observable<String> postFruitImg(
@Query("sn") String sn,
@Part("description") RequestBody description,
@Part MultipartBody.Part file);
}
代码调用如下
/**
* 上传文件
* @param file 文件
* @return bean
*/
public Observable<String> uploadImg(File file) {
//构建API接口
Retrofit retrofit1 = new Retrofit.Builder()
.baseUrl(Common.Hy_Base_Url_Upload)
.addConverterFactory(ScalarsConverterFactory.create())
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
.build();
Common.Hy hy = retrofit1.create(Common.Hy.class);
// 创建 RequestBody，用于封装构建RequestBody
RequestBody requestFile = RequestBody.create(MediaType.parse("multipart/form-data"), file);
// MultipartBody.Part 和后端约定好Key，这里的partName是用image
MultipartBody.Part body = MultipartBody.Part.createFormData("scan_image", file.getName(), requestFile);
// 添加描述
String descriptionString = "hello, 这是文件描述";
RequestBody description = RequestBody.create(MediaType.parse("multipart/form-data"), descriptionString);
// 执行请求
return hy.postFruitImg(HyUtils.getSNCode(),description,body);
}
Post文件上传，还需要额外传递一些key-value值
@POST("/system/update_pic.php")
@Multipart
Observable<String> uploadHeadPic(@Part MultipartBody.Part part,
@Part("timestamp") String time,
@Part("rand") String rand,
@Part("check") String check,
@Part("uid") String uid,
@Part("is_robot") String isRobot,
@Part("platform") String platform);
接口如上，@Part是，当声明为：@Multipart的时候，key-value的key关键字。
其他参数照样传递，而@Part MultipartBody.Part part要注意一下：
// 创建 RequestBody，用于封装构建RequestBody
RequestBody requestFile = RequestBody.create(MediaType.parse("image/jpg"), local);
// MultipartBody.Part 和后端约定好Key，这里的partName是用image
MultipartBody.Part body = MultipartBody.Part.createFormData("pic", "headPic", requestFile);
请求的代码如下：
Retrofit retrofit1 = new Retrofit.Builder()
.baseUrl(baseServer + ":" + port)
.addConverterFactory(ScalarsConverterFactory.create())
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
.build();
HttpProtocolContract httpProtocolContract = retrofit1.create(HttpProtocolContract.class);
long time = CoreManager.getInstance().getWebTimeSecond();
String rand = "0123456789abcdefghijklmnopqrstouwxyz" + time + System.nanoTime();
String check = StringUtils.changeTOLowerCase(EncryptUtils.encryptSHA1ToString(session + "0" + rand + time));
// 创建 RequestBody，用于封装构建RequestBody
RequestBody requestFile = RequestBody.create(MediaType.parse("image/jpg"), local);
// MultipartBody.Part 和后端约定好Key，这里的partName是用image
MultipartBody.Part body = MultipartBody.Part.createFormData("pic", "headPic", requestFile);
// 执行请求
return httpProtocolContract.uploadHeadPic(body,String.valueOf(time),rand,check,String.valueOf(uid),"0","0")
.observeOn(Schedulers.io())
.map(s -> {
LogUtils.i(TAG,"uploadUserHeadPic:"+s);
return 0;
});
