IOS使用正则表达式去掉html中的标签元素,获得纯文本

content是根据网址获得的网页源码字符串 

NSRegularExpression *regularExpretion=[NSRegularExpression regularExpressionWithPattern:@"<[^>]*>|\n"

 options:0

 error:nil];

    content=[regularExpretion stringByReplacingMatchesInString:contentoptions:NSMatchingReportProgress range:NSMakeRange(0, content.length) withTemplate:@"-"];//替换所有html和换行匹配元素为"-"

    regularExpretion=[NSRegularExpression regularExpressionWithPattern:@"-{1,}" options:0 error:nil] ;

    content=[regularExpretion stringByReplacingMatchesInString:contentoptions:NSMatchingReportProgress range:NSMakeRange(0, content.length) withTemplate:@"-"];//把多个"-"匹配为一个"-"

    //根据"-"分割到数组

    NSArray *arr=[NSArray array];

    content=[NSString stringWithString:content];

    arr =  [content componentsSeparatedByString:@"-"];

    NSMutableArray *marr=[NSMutableArray arrayWithArray:arr];

    [marr removeObject:@""];

    return marr;

//正则去除网络标签

-(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;

}

https://www.jianshu.com/p/01a83ec7163d

https://www.jianshu.com/p/52c52518b0d7