Dart CSV写作 [英] Dart CSV Writing

问题描述

嘿，所以我并没有真正弄乱它，但是我想知道是否真的有办法(在我从一个永无休止的兔子洞中摔下来之前)在Dart/Flutter中读取和写入CSV文件?我需要写文件，而不必读它们，而且我愿意花很长的时间写这些文件.任何库都可以工作，内置函数甚至更好.任何帮助都将不胜感激！

Hey so I haven't really messed around with it too much, but I was wondering if there was actually a way (before I go down a neverending rabbit hole) to read and write to CSV files in Dart/Flutter? I need to write to the files, not necessarily read them, and I'm willing to go to quite extreme lengths to do so. Any library works, built-in functions are even better. Any and all help is appreciated!

推荐答案

使用 https://pub.dartlang.org/packages/csv .

如果您有需要转换为csv的 List< List< dynamic>> 项，

If you have a List<List<dynamic>> items that needs to convert into csv,

String csv = const ListToCsvConverter().convert(yourListOfLists);

如果要将csv写入文件，

If you want to write the csv to a file,

    /// Write to a file
    final directory = await getApplicationDocumentsDirectory();
    final pathOfTheFileToWrite = directory.path + "/myCsvFile.csv"
    File file = await File(pathOfTheFileToWrite);
    file.writeAsString(csv);

此外，如果您想将csv文件直接读取到 list< list< dynamic>>

Also, if you want to read a csv file directly into list<list<dynamic>>

final input = new File('a/csv/file.txt').openRead();
final fields = await input.transform(UTF8.decoder).transform(csvCodec.decoder).toList();

这篇关于Dart CSV写作的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！