@Override protected RequestBody postBody(File file) { // 设置请求体 MultipartBody.Builder builder = new MultipartBody.Builder(); builder.setType(MultipartBody.FORM); // 封装文件请求体 if (file != null && file.exists()) { String filename = file.getName(); MediaType mediaType = MediaType.parse(guessMimeType(filename)); RequestBody fileBody = RequestBody.create(mediaType, file); builder.addFormDataPart("file", filename, fileBody); } // 封装请求参数 HashMap<String, String> params = new HashMap<>(); addParams(params); if (params != null && !params.isEmpty()) { for (String key : params.keySet()) { builder.addPart( Headers.of("Content-Disposition", "form-data; name=\"" + key + "\""), RequestBody.create(null, params.get(key))); } } return builder.build(); }