Java：OkHttp 中 RequestBody.create() 过时解决办法

版本：OkHttp3

当使用下面的代码时会提示 RequestBody.create() 已过时

RequestBody requestBody = RequestBody.create();

解决办法：
 

import okhttp3.MediaType.Companion.*;
import okhttp3.RequestBody.Companion.*;

//String转RequestBody String、ByteArray、ByteString都可以用toRequestBody()
MediaType mediaType=MediaType.Companion.parse("application/json;charset=utf-8");
RequestBody stringBody=RequestBody.Companion.create("body参数",mediaType);
Request request=new Request
            .Builder()
            .post(stringBody)
            .build();
                
//File转RequestBody
MediaType mediaType=MediaType.Companion.parse("text/x-markdown; charset=utf-8");
File file=new File("");
RequestBody fileBody=RequestBody.Companion.create(file,mediaType);
Request request=new MultipartBody.Builder()
                .addFormDataPart("file", file.getName(),fileBody)
                .build();