Question

使用FileReference对有效字符有约束 Error: Error #2087: The FileReference.download() file name contains prohibited characters.
这很好，因为我认为限制来自底层文件系统
是否存在修剪/替换所有禁用字符的通用方法？

为了清楚起见，我追求的是： var dirty:String = "Eat this !@##$%%^&&*()\/";.txt
var clean:String = dirty.replaceAllProhibitedCharacters();

我不是在寻找特定于操作系统的正则表达式，而是一个跨平台的解决方案。

Answer 1

不允许的字符列表不会因底层操作系统而改变，它是一个固定的列表。从FileReference.download()的文档中，不允许的字符列表是：

/\:*?"<>|%

修改：看起来也不允许@。

如果要从任意字符串中删除这些字符，可以执行以下操作：

var validFileName:String = invalidFileName.replace(/[\/\\:*?"<>|%@]/g, "");

如果您想用其他内容替换它们，请将第二个参数更改为replace()。

修改：添加了@个字符;转义了/字符。

Answer 2

之前的回答对我不起作用。这就是工作（使用Flex 4.5）：

public class FileNameSanitizer
{
public static function sanitize( fileName:String ):String
{
    var p:RegExp = /[:\/\\\*\?"<>\|%]/g;
    return fileName.replace( p, "" );
}
}

用于证明它的测试用例：

import flexunit.framework.TestCase;

public class FileNameSanitizerTest extends TestCase
{
    public function FileNameSanitizerTest()
    {
    }

    public function testSanitize():void
    {
        assertEquals( "bla", FileNameSanitizer.sanitize( "bla" ) );
        assertEquals( "blafoo", FileNameSanitizer.sanitize( "bla/foo" ) );
        assertEquals( "blafoo", FileNameSanitizer.sanitize( "bla\\foo" ) );
        assertEquals( "blafoo", FileNameSanitizer.sanitize( "bla:foo" ) );
        assertEquals( "blafoo", FileNameSanitizer.sanitize( "bla*foo" ) );
        assertEquals( "blafoo", FileNameSanitizer.sanitize( "bla?foo" ) );
        assertEquals( "blafoo", FileNameSanitizer.sanitize( "bla\"foo" ) );
        assertEquals( "blafoo", FileNameSanitizer.sanitize( "bla<foo" ) );
        assertEquals( "blafoo", FileNameSanitizer.sanitize( "bla>foo" ) );
        assertEquals( "blafoo", FileNameSanitizer.sanitize( "bla|foo" ) );
        assertEquals( "blafoo", FileNameSanitizer.sanitize( "bla%foo" ) );

        assertEquals( "", FileNameSanitizer.sanitize( "/\\:*?\"<>|%" ) );
    }

}

Flex FileReference禁止使用字符

2 个答案: