IOS使用正则表达式去掉html中的标签元素,获得纯文本

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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:content options: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:content options: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;