Android http post

首先在App的build.gradle中加入

implementation 'com.squareup.okhttp3:okhttp:3.12.0'

之后

try {
    OkHttpClient client = new OkHttpClient();
    MultipartBody formBody = new MultipartBody.Builder()
            .setType(MultipartBody.FORM)
            .addFormDataPart("user_id", user_id)
            .addFormDataPart("device_id", device_id)
            .addFormDataPart("lesson_id", lesson_id)
            .addFormDataPart("lesson_name", lesson_name)
            .build();

    String serverUrl = "https://app.xxxxxx.cn/xxxxxx/record";
    final Request request = new Request.Builder()
            .url(serverUrl)
            .addHeader("Authorization", "hexjwt " + userInfo.getString("user_jwt"))
            .post(formBody)
            .build();
    Call call = client.newCall(request);
    Response response = call.execute();

	// 可在此处判断上传结果
    Log.d(TAG, "Http post res " + response.body().toString());

} catch (Exception e) {
    Log.e(TAG, "Http post err " + e);
}