Question

如何在swift中编码字符串以删除所有特殊字符并将其替换为匹配的html编号。

假设我有以下字符串：

var mystring = "This is my String & That's it."

然后用其html编号替换特殊字符

& = &#38;
' = &#39;
> = &#62;

但我想对所有特殊字符执行此操作，而不仅仅是上面字符串中列出的字符。怎么会这样做？

Answer 1

这是最简单的方法：

DateTime Class1 Class2 Class3 Class4.........Class15 2017-10-01 00:00:00 0 240 17 0 ......... 0 2017-10-01 00:01:00 0 209 14 0 ......... 0 .... and so on

Answer 2

extension String {
    func makeHTMLfriendly() -> String {
        var finalString = ""
        for char in self {
            for scalar in String(char).unicodeScalars {
                finalString.append("&#\(scalar.value)")
            }
        }
        return finalString
    }
}

用法：

newString = oldString.makeHTMLfriendly()

这似乎一般都有用（虽然我不确定unicode标量总是与HTML数字匹配）。

请注意，它会转换所有内容，甚至包括不需要转换的字母数字字符。编辑它以便不转换某些东西可能不会太困难。

Answer 3

检查html中的所有特殊字符：

http://www.ascii.cl/htmlcodes.htm

您创建了一个用于解析字符的Util：

像这样：

import UIKit

类Util：NSObject {

func parseSpecialStrToHtmlStr(oriStr: String) -> String {

        var returnStr: String = oriStr


        returnStr = returnStr.replacingOccurrences(of: "&", with: "&#38")
        returnStr = returnStr.replacingOccurrences(of: "'", with: "&#39")
        returnStr = returnStr.replacingOccurrences(of: ">", with: "&#62")
        ...


        return returnStr
    }
}

自己动手，创造自己的功能设备。

修改

如果您认为这是一项巨大的工作，请查看：https://github.com/adela-chang/StringExtensionHTML

Answer 4

尝试SwiftSoup

func testEscape()throws {
    let text = "Hello &<> Å å π 新 there ¾ © »"

    let escapedAscii = Entities.escape(text, OutputSettings().encoder(String.Encoding.ascii).escapeMode(Entities.EscapeMode.base))
    let escapedAsciiFull = Entities.escape(text, OutputSettings().charset(String.Encoding.ascii).escapeMode(Entities.EscapeMode.extended))
    let escapedAsciiXhtml = Entities.escape(text, OutputSettings().charset(String.Encoding.ascii).escapeMode(Entities.EscapeMode.xhtml))
    let escapedUtfFull = Entities.escape(text, OutputSettings().charset(String.Encoding.utf8).escapeMode(Entities.EscapeMode.extended))
    let escapedUtfMin = Entities.escape(text, OutputSettings().charset(String.Encoding.utf8).escapeMode(Entities.EscapeMode.xhtml))

    XCTAssertEqual("Hello &amp;&lt;&gt; &Aring; &aring; &#x3c0; &#x65b0; there &frac34; &copy; &raquo;", escapedAscii)
    XCTAssertEqual("Hello &amp;&lt;&gt; &angst; &aring; &pi; &#x65b0; there &frac34; &copy; &raquo;", escapedAsciiFull)
    XCTAssertEqual("Hello &amp;&lt;&gt; &#xc5; &#xe5; &#x3c0; &#x65b0; there &#xbe; &#xa9; &#xbb;", escapedAsciiXhtml)
    XCTAssertEqual("Hello &amp;&lt;&gt; Å å π 新 there ¾ © »", escapedUtfFull)
    XCTAssertEqual("Hello &amp;&lt;&gt; Å å π 新 there ¾ © »", escapedUtfMin)
    // odd that it's defined as aring in base but angst in full

    // round trip
    XCTAssertEqual(text, try Entities.unescape(escapedAscii))
    XCTAssertEqual(text, try Entities.unescape(escapedAsciiFull))
    XCTAssertEqual(text, try Entities.unescape(escapedAsciiXhtml))
    XCTAssertEqual(text, try Entities.unescape(escapedUtfFull))
    XCTAssertEqual(text, try Entities.unescape(escapedUtfMin))
}

将字符串编码为HTML字符串Swift 3

4 个答案: