I needed to automate this process on my Mac. I originally tried using catdoc/xls2csv as suggested by mpowered, but xls2csv had trouble detecting the original encoding of the document and not all documents were the same. What I ended up doing was setting the default webpage output encoding to be UTF-8 and then providing the files to Apple's Automator, applying the Convert Format of Excel Files action to convert to Web Page (HTML). Then using PHP, DOMDocument and XPath, I queried the documents and formatted them to CSV.

这是PHP脚本(process.php):

<?php
$pi = pathinfo($argv[1]);
$file = $pi['dirname'] . '/' . $pi['filename'] . '.csv';
$fp = fopen($file,'w+');
$doc = new DOMDocument;
$doc->loadHTMLFile($argv[1]);
$xpath = new DOMXPath($doc);
$table = [];
foreach($xpath->query('//tr') as $row){
    $_r = [];
    foreach($xpath->query('td',$row) as $col){
        $_r[] = trim($col->textContent);
    }
    fputcsv($fp,$_r);
}
fclose($fp);
?>

这是我用来将HTML文档转换为csv的shell命令:

find . -name '*.htm' | xargs -I{} php ./process.php {}

这是一种非常非常迂回的方法，但这是我发现的最可靠的方法。

在Excel 2016及更高版本(包括Office 365)中，有一个专门用于UTF-8格式的CSV选项。

在Office 365中，选择另存为;以前人们可能会选择CSV(逗号分隔)，现在你可以保存为CSV UTF-8(逗号分隔)(*.csv)

另一种方法是在记事本中打开UTF-8 CSV文件，它将正确显示。 然后将所有的“，”替换为制表符。 将所有这些粘贴到一个新的excel文件中。

“nevets1219”是正确的谷歌文档，然而，如果你只是“导入”文件，它通常不会将其转换为UTF-8。

但是如果您将CSV导入到现有的谷歌电子表格中，它会转换为UTF-8。

下面是一个食谱:

在主文档(或驱动器)屏幕上点击“创建”按钮并选择“电子表格” 在“文件”菜单中选择“导入” 按“选择档案” 选择“替换电子表格” 选择要用作分隔符的字符 点击“导入” 从“文件”菜单选择“下载为”-> CSV(当前文件)

生成的文件将是UTF-8格式的

“nevets1219”的第二个选项是在notepad++中打开CSV文件并将其转换为ANSI。

在顶部菜单中选择: Encoding ->转换为Ansi

Easy way to do it: download open office (here), load the spreadsheet and open the excel file (.xls or .xlsx). Then just save it as a text CSV file and a window opens asking to keep the current format or to save as a .ODF format. select "keep the current format" and in the new window select the option that works better for you, according with the language that your file is been written on. For Spanish language select Western Europe (Windows-1252/ WinLatin 1) and the file works just fine. If you select Unicode (UTF-8), it is not going to work with the spanish characters.