前言
我們?cè)谝恍╅_(kāi)發(fā)中，很有必要過(guò)濾掉用戶輸入的文本中的HTML標(biāo)簽以防范XSS攻擊，本文將詳細(xì)介紹關(guān)于iOS去除html標(biāo)簽的相關(guān)內(nèi)容，分享出來(lái)供大家參考學(xué)習(xí)，下面話不多說(shuō)了，來(lái)一起看看詳細(xì)的介紹吧。
請(qǐng)求接口返回的數(shù)據(jù)里包含html標(biāo)簽，OC中去掉的方法之前做過(guò)，代碼如下
-(NSString *)filterHTML:(NSString *)html{ NSScanner * scanner = [NSScanner scannerWithString:html]; NSString * text = nil; while([scanner isAtEnd]==NO) { [scanner scanUpToString:@"<" intoString:nil]; [scanner scanUpToString:@">" intoString:&text]; html = [html stringByReplacingOccurrencesOfString:[NSString stringWithFormat:@"%@>",text] withString:@""]; } return html;}也可以使用正則去掉
-(NSString *)getZZwithString:(NSString *)string{ NSRegularExpression *regularExpretion=[NSRegularExpression regularExpressionWithPattern:@"<[^>]*>|/n" options:0 error:nil]; string=[regularExpretion stringByReplacingMatchesInString:string options:NSMatchingReportProgress range:NSMakeRange(0, string.length) withTemplate:@""]; return string;}還可以轉(zhuǎn)換為富文本
+ (NSMutableAttributedString *)praseHtmlStr:(NSString *)htmlStr { NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithData:[htmlStr dataUsingEncoding:NSUnicodeStringEncoding] options:@{NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType,NSCharacterEncodingDocumentAttribute :@(NSUTF8StringEncoding)} documentAttributes:nil error:nil]; [attributedString addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:13] range:NSMakeRange(0, attributedString.length)]; [attributedString addAttribute:NSForegroundColorAttributeName value:CommonColor(Color333333) range:NSMakeRange(0, attributedString.length)]; return attributedString;}但是這次使用的是swift，來(lái)看我收集的幾種方法，其實(shí)都差不多
func removeHTML(htmlString : String)->String{ return htmlString.replacingOccurrences(of: "<[^>]+>", with: "", options: .regularExpression, range: nil)} extension String { func deleteHTMLTag(tag:String) -> String { return self.replacingOccurrences(of: "(?i)</?/(tag)//b[^<]*>", with: "", options: .regularExpression, range: nil) } func deleteHTMLTags(tags:[String]) -> String { var mutableString = self for tag in tags { mutableString = mutableString.deleteHTMLTag(tag: tag) } return mutableString } ///去掉字符串標(biāo)簽 mutating func filterHTML() -> String?{ let scanner = Scanner(string: self) var text: NSString? while !scanner.isAtEnd { scanner.scanUpTo("<", into: nil) scanner.scanUpTo(">", into: &text) self = self.replacingOccurrences(of: "/(text == nil ? "" : text!)>", with: "") } return self }}總結(jié)
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