我们在开发中,有时候需要过滤掉用户输入文本中的html标记,这样可以防止xss攻击,本文是武林技术频道小编和大家分享的详解iOS实现去除html标签的方法,供大家参考和学习。
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
-(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
-(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
+ (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
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
以上就是详解iOS实现去除html标签的方法的全部内容,希望本文的内容对大家的学习或工作有一定的参考学习价值,感谢您对武林技术频道的支持。
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