从字符串中删除HTML标记

Question

删除所有HTML标签,如 或<p>从字符串.我使用下面的代码,但它不起作用.

var content = "<p>&nbsp;&nbsp;test result</p><br/>"; // My String

content.replacingOccurrences(of: "<[^>]+>", with: "", options: String.CompareOptions.regularExpression, range: nil)

但它不会从字符串中删除所有HTML标记.

Answer 1

var content = "<p>&nbsp;&nbsp;test result</p><br/>"; // My String

let a = content.replacingOccurrences(of: "<[^>]+>", with: "", options: String.CompareOptions.regularExpression, range: nil)

a将是:   test result

let b = a.replacingOccurrences(of: "&[^;]+;", with: "", options: String.CompareOptions.regularExpression, range: nil)

b现在是: test result

这也将照顾<等等.没有魔力.找出你需要的东西,然后写出适当的RegEx.

Answer 2

为此，我们可以使用

extension String {
    var withoutHtmlTags: String {
    return self.replacingOccurrences(of: "<[^>]+>", with: "", options: 
    .regularExpression, range: nil).replacingOccurrences(of: "&[^;]+;", with: 
    "", options:.regularExpression, range: nil)
    }
}

Answer 3

经Swift 4测试：删除所有HTML标记并解码实体

提供更稳定的结果

extension String {
    public var withoutHtml: String {
        guard let data = self.data(using: .utf8) else {
            return self
        }

        let options: [NSAttributedString.DocumentReadingOptionKey: Any] = [
            .documentType: NSAttributedString.DocumentType.html,
            .characterEncoding: String.Encoding.utf8.rawValue
        ]

        guard let attributedString = try? NSAttributedString(data: data, options: options, documentAttributes: nil) else {
            return self
        }

        return attributedString.string
    }
}

Answer 4

使用在Swift 3.0中在Playground上测试的“跟随扩展”

extension String {
    var withoutHtmlTags: String {
      return self.replacingOccurrences(of: "<[^>]+>", with: "", options: .regularExpression, range: nil)
    }
}

用法

let result = "<strong>HTML</strong> Tags <em>Contain</em> <img /> <a href=\"\">String</a>".withoutHtmlTags