使用okHttp3上传动态文件数量 [英] Upload dynamic number of files with okHttp3

问题描述

如何使用 OkHttp v3管理动态数量的文件上传，我已经使用OkHttp的旧版本 compile'c​​om.squareup.okhttp：okhttp：2.6.0'

How to manage upload of dynamic number of files with OkHttp v3, I have already implemented with older version of OkHttp which was compile 'com.squareup.okhttp:okhttp:2.6.0'

现在是对类Form和Multipart的一些变化进行建模。他们用更强大的FormBody和FormBody.Builder组合替换了不透明的FormEncodingBuilder。同样，他们已经将MultipartBuilder升级为MultipartBody，MultipartBody.Part和MultipartBody.Builder。

There are some changes in class Form and Multipart bodies are now modeled. They've replaced the opaque FormEncodingBuilder with the more powerful FormBody and FormBody.Builder combo. Similarly they've upgraded MultipartBuilder into MultipartBody, MultipartBody.Part, and MultipartBody.Builder.

以下代码是旧版本的

below code is of older version

final MediaType MEDIA_TYPE = MediaType.parse(AppConstant.arrImages.get(i).getMediaType());

//If you can have multiple file types, set it in ArrayList

MultipartBuilder buildernew = new MultipartBuilder()
        .type(MultipartBuilder.FORM)
        .addFormDataPart("title", title);   //Here you can add the fix number of data.

for (int i = 0; i < AppConstants.arrImages.size(); i++) {  //loop to add dynamic number of files.
    File f = new File(FILE_PATH,TEMP_FILE_NAME + i + ".png");
    if (f.exists()) {
        buildernew.addFormDataPart(TEMP_FILE_NAME + i, TEMP_FILE_NAME + i + FILE_EXTENSION, RequestBody.create(MEDIA_TYPE, f));
    }
}

RequestBody requestBody = buildernew.build();  

//Build the object of MultipartBuilder and get object of RequestBody.

但现在用于 OkHttp < version> 3.0.1< / version> 文件上传的代码实现类似于下面的代码（ $ b

But now for OkHttp <version>3.0.1</version> code implementation for file upload is something like below code(source)

RequestBody requestBody = new MultipartBody.Builder()
        .setType(MultipartBody.FORM)
        .addFormDataPart("title", "Square Logo")
        .addFormDataPart("image", "logo-square.png",
            RequestBody.create(MEDIA_TYPE_PNG, new File("website/static/logo-square.png")))
        .build();

我尝试了与 MultipartBody 没有找到有效的解决办法。
或者我需要为不同的情况实现相同的 if else （这是行不通的）

I tried the same logic with MultipartBody but didn't found any fruitful solution. Or do I need to implement same if else for different cases.(Which is not feasible)

推荐答案

构建器仍然存在，可用于此。将它存储在本地，就像你之前做的那样，并在循环中修改：

The builder still exists and can be used for this. Store it in a local like you were doing before and modify in the loop:

MultipartBody.Builder buildernew = new MultipartBody.Builder()
      .setType(MultipartBody.FORM)
      .addFormDataPart("title", title);   //Here you can add the fix number of data.

for (int i = 0; i < AppConstants.arrImages.size(); i++) {
    File f = new File(FILE_PATH,TEMP_FILE_NAME + i + ".png");
    if (f.exists()) {
        buildernew.addFormDataPart(TEMP_FILE_NAME + i, TEMP_FILE_NAME + i + FILE_EXTENSION, RequestBody.create(MEDIA_TYPE, f));
    }
}

MultipartBody requestBody = buildernew.build();  

这篇关于使用okHttp3上传动态文件数量的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！