public void postFile(View view){
        //API mApi= RetrofitManger.getRetrofit().create(API.class);
    if(Path.size()==0){
        Toast.makeText(this,"未选择图片！",Toast.LENGTH_SHORT).show();
    }
else {
        File file = new File(Path.get(0));
        Retrofit retrofit=new Retrofit.Builder()
                .baseUrl("http://localhost:9102")
                .addConverterFactory(GsonConverterFactory.create())
                .build();
        mApi= retrofit.create(API.class);
        RequestBody body = RequestBody.create(MediaType.parse("image/jepg"), file);
        MultipartBody.Part part = MultipartBody.Part.createFormData("file", Path.get(0), body);
        Call<PostFileResult> task = mApi.postFile(part);
        task.enqueue(new Callback<PostFileResult>() {
            @Override
            public void onResponse(Call<PostFileResult> call, Response<PostFileResult> response) {
                int code = response.code();
                if (HttpURLConnection.HTTP_OK == code) {
                    Log.d(TAG, "result -- >" + response.body());
                }
            }

            @Override
            public void onFailure(Call<PostFileResult> call, Throwable t) {
                Log.d(TAG, "onFailure -- >" + t.toString());
            }
        });

• }非计算机专业学生，毕业设计需要设计APP，上传图片到服务器，使用Retrofit上传后出错，跟着视频教程敲的代码，请大神帮忙看看问题出在哪里。
• logcat如下
•