網(wǎng)上找了很多文章，看的有點(diǎn)眼花繚亂除秀，這里只講下可行方案，順便做下筆記算利；
本人用的rxjava和Retrofit册踩。下面是個(gè)上傳txt格式的錯(cuò)誤日志的例子

• 1.首先是定義下接口（由于自己的接口路徑跟默認(rèn)配置不一樣，所以用了@Url）

//上傳錯(cuò)誤日志
    @Multipart
    @POST()
    Observable<ErrorLogEntity> addErrorLog(@Url String baseurl,@PartMap 
     Map<String, RequestBody> params, @Part MultipartBody.Part file);

• 2.實(shí)現(xiàn)方法

 public Disposable addErrorLog(String url, Map<String, RequestBody> stringRequestBodyMap, MultipartBody.Part file,DisposableObserver<ErrorLogEntity> consumer){
        return  getService(ApiService.class).addErrorLog(url,stringRequestBodyMap,file).subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribeWith(consumer);
 

• 3.生成Map<String, RequestBody>

        Map<String, RequestBody> stringRequestBodyMap = new HashMap<>();

        FileUtils.putRequestBodyMap(stringRequestBodyMap, "name", "張三");
        FileUtils.putRequestBodyMap(stringRequestBodyMap, "age", "16");
        FileUtils.putRequestBodyMap(stringRequestBodyMap, "fileName", "error.txt");

• 4.生成MultipartBody.Part

 MultipartBody.Part file=FileUtils.prepareFilePart("file",fileuri);

• 5.File的工具類FileUtils.java

    public static final String MULTIPART_FORM_DATA = "multipart/form-data";

    public static void putRequestBodyMap(Map map, String key, String value) {
        putRequestBodyMap(map, key, createPartFromString(value));
    }

    @NonNull
    public static RequestBody createPartFromString(String descriptionString) {
        if (descriptionString == null) {
            descriptionString = "";
        }
        return RequestBody.create(
                MediaType.parse(MULTIPART_FORM_DATA), descriptionString);
    }
    public static void putRequestBodyMap(Map map, String key, RequestBody body) {
        if (!TextUtils.isEmpty(key) && body != null) {
            map.put(key, body);
        }
    }

    public static MultipartBody.Part prepareFilePart(String partName, String fileUri) {
        File file = new File(fileUri);
        if (file != null) {
            // 為file建立RequestBody實(shí)例
            RequestBody requestFile =
                    RequestBody.create(MediaType.parse(MULTIPART_FORM_DATA), file);
            // MultipartBody.Part借助文件名完成最終的上傳
            return MultipartBody.Part.createFormData(partName, file.getName(), requestFile);
        }
        return null;
    }

• 6參數(shù)都有了效拭，只要調(diào)用addErrorLog方法就好了（謝謝大家觀看Ｔ菁）