antonio-nicolau / chaleno Goto Github PK

Chaleno [ UrlException ] : XMLHttpRequest error.
Error: Invalid argument (source): Must be a String or List.: null

@antonio-nicolau ...
I just started trying your webscraper out. It looks like exactly what I want. however, this is what I put in and the error I got ... Any ideas?

class _HomePageState extends State<HomePage> {
  String? header, subscribeCount, img;

  void scrapData() async {
    print('11111');
    var parser = await Chaleno().load('https://example.com');
    print('2222');
    Result result = parser!.getElementById('id');
    print(result.text);

And I got these messages

11111
Chaleno [ Exception ]: XMLHttpRequest error.
2222
null

Getting this error. Tried everything, even created new project but nothing working.

How can I get children of class like
document.getElementsByClassName('class-name')[0].children[2].children[5]....
I'm not found it in Result class
can I execute a custom js dom code ?

var search = "castle";
        var searchUrl = 'https://www.google.com/search?q=images%20' + search;
        var parser = await Chaleno().load(searchUrl);
        print("searchUrl: " + searchUrl);
        if(parser == null){
          print("parser is null");
          return;
        }
        List<Result>? results = parser.querySelectorAll('img');
        if(results == null){
          print("results is null");
          return;
        }
        print("count of images " + results.length.toString());
        results.forEach((item) => print(item.src));

flutter: searchUrl: https://www.google.com/search?q=images%20castle
flutter: count of images 15
flutter: data:image/gif;base64,R0lGODlhAQABAIAAAP///////yH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
flutter: data:image/gif;base64,R0lGODlhAQABAIAAAP///////yH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
flutter: data:image/gif;base64,R0lGODlhAQABAIAAAP///////yH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
flutter: data:image/gif;base64,R0lGODlhAQABAIAAAP///////yH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
flutter: data:image/gif;base64,R0lGODlhAQABAIAAAP///////yH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
flutter: data:image/gif;base64,R0lGODlhAQABAIAAAP///////yH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
flutter: data:image/gif;base64,R0lGODlhAQABAIAAAP///////yH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
flutter: data:image/gif;base64,R0lGODlhAQABAIAAAP///////yH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
flutter: data:image/gif;base64,R0lGODlhAQABAIAAAP///////yH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
flutter: data:image/gif;base64,R0lGODlhAQABAIAAAP///////yH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
flutter: data:image/gif;base64,R0lGODlhAQABAIAAAP///////yH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
flutter: data:image/gif;base64,R0lGODlhAQABAIAAAP///////yH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
flutter: data:image/gif;base64,R0lGODlhAQABAIAAAP///////yH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
flutter: data:image/gif;base64,R0lGODlhAQABAIAAAP///////yH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
flutter: data:image/gif;base64,R0lGODlhAQABAIAAAP///////yH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==

A site address is displayed, but when data is being loaded, ‘Please wait for a moment’ is displayed, and when the data is loaded, the data is displayed.
However, if you use 'await' to scrap, 'Please wait' is displayed.
How do I set the delay?

I need to click elements in website and filling data inside textfiled

Using the examples given in the read me file am getting this error

The method 'getElementById' isn't defined for the type 'Future'.
Try correcting the name to the name of an existing method, or defining a method named 'getElementById'