我正在尝试将HTML转换为NSAttributedString格式,然后再转回去。从HTML转换很好,但是转回HTML时,得到的格式无法发送到我们的后端:
<!DOCTYPE html PUBLIC -//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta http-equiv=Content-Style-Type" content="text/css">
<title></title>
<meta name="Generator" content="Cocoa HTML Writer">
<style type="text/css">
p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; line-height: 15.0px; font: 16.0px 'Times New Roman'; color: #000000; -webkit-text-stroke: #000000}
span.s1 {font-family: 'Times New Roman'; font-weight: normal; font-style: normal; font-size: 16.00pt; font-kerning: none}
span.s2 {font-family: 'TimesNewRomanPS-BoldMT'; font-weight: bold; font-style: normal; font-size: 16.00pt; font-kerning: none}
span.s3 {font-family: 'TimesNewRomanPS-ItalicMT'; font-weight: normal; font-style: italic; font-size: 16.00pt; font-kerning: none}
span.s4 {font-family: 'TimesNewRomanPS-BoldItalicMT'; font-weight: bold; font-style: italic; font-size: 16.00pt; font-kerning: none}
</style>
</head>
<body>
<p class="p1"><span class="s1">vanlig text </span><span class="s2">bold</span><span class="s1"> </span><span class="s3">italic</span><span class="s1"> </span><span class="s4">bold_italic asd</span></p>
</body>
</html>
我需要发送给服务器的字符串/格式不能包含CSS,需要更像这样:(不带CSS)
<html>
<body>
<p>vanlig text <b>bold</b> <i>italic</i><b><i>bold_italic asd</i></b>
</p>
</body>
</html>
我将尝试将此解决方案翻译为中文,但未获得成功:NSAttribute string to HTML。我使用css保留了格式。
迄今为止我的代码如下:
extension NSAttributedString
{
var htmlString : String
{
let documentAttributes = [NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType]
if let htmlData = try? self.dataFromRange(NSMakeRange(0, self.length), documentAttributes:documentAttributes),
let htmlString = String(data:htmlData, encoding:NSUTF8StringEncoding) {
return htmlString
}
return ""
}
func attributedStringWithNoTrailingNewLines() -> NSMutableAttributedString
{
let mutableAttributedString = NSMutableAttributedString(attributedString: self)
let nsString = string as NSString
let lastWhitespaceOrNewlineRange = nsString.rangeOfCharacterFromSet(NSCharacterSet.whitespaceAndNewlineCharacterSet(), options: .BackwardsSearch)
if lastWhitespaceOrNewlineRange.length != 0 && NSMaxRange(lastWhitespaceOrNewlineRange) == self.length
{
mutableAttributedString.replaceCharactersInRange(lastWhitespaceOrNewlineRange, withString: "")
}
return mutableAttributedString
}
}
extension String
{
var attributedString : NSAttributedString?
{
if let data = self.dataUsingEncoding(NSUTF8StringEncoding) {
let options = [NSDocumentTypeDocumentAttribute:NSHTMLTextDocumentType]
let attrStr = try? NSAttributedString(data: data, options: options, documentAttributes: nil)
return attrStr
}
return nil
}
}
<b><i>等。如果仅限于某些标签,您可以列举具有有效范围的属性,并自行添加标签,如有必要,请不要忘记添加“开始”
<html><body>`和相应的结束标签。 - Larme