Android使用Retrofit上传文件功能
时间：2022-02-10 13:49:45|栏目：Android代码|点击： 次
本文实例为大家分享了Android使用Retrofit上传文件的具体代码，供大家参考，具体内容如下
一、封装RetrofitManager
public class RetrofitManager {
private static RetrofitManager retrofitManager;
private Retrofit retrofit;
private RetrofitManager() {}
public static RetrofitManager getInstance() {
if (retrofitManager == null) {
synchronized (RetrofitManager.class) {
if (retrofitManager == null) {
retrofitManager = new RetrofitManager();
}
}
}
return retrofitManager;
}
public Retrofit getRetrofit() {
if (retrofit == null) {
// 添加日志拦截器
HttpLoggingInterceptor httpLoggingInterceptor = new HttpLoggingInterceptor();
// 拦截等级为body(可以打印出完整的网络请求)
httpLoggingInterceptor.level(HttpLoggingInterceptor.Level.BODY);
// 使用OkHttpClient
OkHttpClient okHttpClient = new OkHttpClient.Builder()
.addInterceptor(httpLoggingInterceptor)
.connectTimeout(1, TimeUnit.MINUTES)
.readTimeout(1,TimeUnit.MINUTES)
.build();
// 创建出Retrofit
retrofit = new Retrofit.Builder()
// 使用Gson转换工厂
.addConverterFactory(GsonConverterFactory.create())
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
// 基础Url
.baseUrl("http://**.**.**.**:**/")
.client(okHttpClient)
.build();
}
return retrofit;
}
}
二、上传单一文件
1.在Api接口中声明方法
@Multipart
@POST("fileUpload")
Observable<String> upload(@Part List<MultipartBody.Part> parts);
2.实例化api接口
// 实例化api接口 Api api = RetrofitManager.getInstance().getRetrofit().create(Api.class);
3.构建参数
File file = new File("/sdcard/DCIM/Camera/**.jpg");
RequestBody body = RequestBody.create(MediaType.parse("multipart/form-data"), file);
MultipartBody multipartBody = new MultipartBody.Builder()
.addFormDataPart("file", "fileName.jpg", body)
.setType(MultipartBody.FORM)
.build();
4.提交请求
api.upload(parts)
.observeOn(AndroidSchedulers.mainThread())
.subscribeOn(Schedulers.io())
.subscribe(new Observer<String>() {
@Override
public void onNext(String s) {
Log.i("--",s); // 请求结果
}
@Override
public void onError(Throwable e) {
}
@Override
public void onComplete() {
}
});
三、上传多个文件
1.在Api接口中声明方法
@Multipart
@POST("fileUploadMore")
Observable<String> uploadMore(@PartMap Map<String, List<MultipartBody.Part>> multiMap);
2.实例化api接口
// 实例化api接口 Api api = RetrofitManager.getInstance().getRetrofit().create(Api.class);
3.构建参数
File file = new File("/sdcard/DCIM/Camera/**.jpg");
RequestBody body = RequestBody.create(MediaType.parse("multipart/form-data"), file);
MultipartBody multipartBody1 = new MultipartBody.Builder()
.addFormDataPart("file", "fileName1.jpg", body)
.setType(MultipartBody.FORM)
.build();
MultipartBody multipartBody2 = new MultipartBody.Builder()
.addFormDataPart("file", "fileName2.jpg", body)
.setType(MultipartBody.FORM)
.build();
MultipartBody multipartBody3 = new MultipartBody.Builder()
.addFormDataPart("file", "fileName3.jpg", body)
.setType(MultipartBody.FORM)
.build();
MultipartBody multipartBody4 = new MultipartBody.Builder()
.addFormDataPart("file", "fileName4.jpg", body)
.setType(MultipartBody.FORM)
.build();
// 把所有文件放入map集合中
Map<String, List<MultipartBody.Part>> parts = new HashMap<>();
parts.put("f1",multipartBody1.parts());
parts.put("f2",multipartBody2.parts());
parts.put("f3",multipartBody3.parts());
parts.put("f4",multipartBody4.parts());
4.提交请求
api.uploadMore(parts)
.observeOn(AndroidSchedulers.mainThread())
.subscribeOn(Schedulers.io())
.subscribe(new Observer<String>() {
@Override
public void onNext(String s) {
Log.i("--",s); // 请求结果
}
@Override
public void onError(Throwable e) {
}
@Override
public void onComplete() {
}
});
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