前言
我们在一些开发中,很有必要过滤掉用户输入的文本中的HTML标签以防范XSS攻击,本文将详细介绍关于iOS去除html标签的相关内容,分享出来供大家参考学习,下面话不多说了,来一起看看详细的介绍吧。
请求接口返回的数据里包含html标签,OC中去掉的方法之前做过,代码如下
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-(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; } |
也可以使用正则去掉
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-(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; } |
还可以转换为富文本
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+ (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; } |
但是这次使用的是swift,来看我收集的几种方法,其实都差不多
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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 } ///去掉字符串标签 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 } } |
总结
以上就是这篇文章的全部内容了,本文还有许多不足,希望本文的内容对大家的学习或者工作具有一定的参考学习价值,如果有疑问大家可以留言交流,谢谢大家对服务器之家的支持。
原文链接:https://blog.duicode.com/2458.html