簡單談談個人在使用OkHttp過程中發現的注意點：

1.提交鍵值對

OkHttpClient client = new OkHttpClient();
String post(String url, String json) throws IOException { 

RequestBody formBody = new FormEncodingBuilder()
    .add("platform", "android")
    .add("name", "bug")
    .add("subject", "XXXXXXXXXXXXXXX")
    .build();

Request
 
 request = new Request.Builder()
      .url(url)
      .post(body)
      .build();

 Response response = client.newCall(request).execute();
    if (response.isSuccessful()) {
        return response.body().string();
    } else {
        throw new IOException("Unexpected code " + response);
    }
}

主要使用FormEncodingBuilder來新增引數值、post url即可

2.上傳檔案

此處以上傳圖片為例

protected RequestBody postBody(File file) {
    // 設定請求體
    MediaType MEDIA_TYPE_PNG = MediaType.parse("image/png");
    RequestBody body = MultipartBody.create(MEDIA_TYPE_PNG, file);

    MultipartBody.Builder builder = new MultipartBody.Builder();
    builder.setType(MultipartBody.FORM);
    //這裡是 封裝上傳圖片引數
 

    builder.addFormDataPart("file", file.getName(), body);

    // 封裝請求引數,這裡最重要
    HashMap<String, String> params = new HashMap<>();
    params.put("client","Android");
    params.put("uid","1061");
    params.put("token","1911173227afe098143caf4d315a436d");
    params.put("uuid","A000005566DA77");
    //引數以新增header方式將引數封裝，否則上傳引數為空
    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();