VKAuthService.java 文件源码

public String getToken(String code) throws UnirestException {
    HttpResponse<JsonNode> response = Unirest.post("https://oauth.vk.com/access_token")
            .header("User-Agent", "pxls.space")
            .field("grant_type", "authorization_code")
            .field("code", code)
            .field("redirect_uri", getCallbackUrl())
            .field("client_id", App.getConfig().getString("oauth.vk.key"))
            .field("client_secret", App.getConfig().getString("oauth.vk.secret"))
            .asJson();

    JSONObject json = response.getBody().getObject();

    if (json.has("error")) {
        return null;
    } else {
        return json.getString("access_token");
    }
}