IOS使用正則表達式去掉html中的標簽元素,獲得純文本

 

content是根據網址獲得的網頁源碼字符串

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

                                                                                    options : 0

                                                                                      error :nil ];

     

     content=[regularExpretion stringByReplacingMatchesInString :content options : NSMatchingReportProgress range :NSMakeRange( 0 , content .length ) withTemplate : @"-" ]; //替換所有html和換行匹配元素為"-"

     

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

     content=[regularExpretion stringByReplacingMatchesInString :content options : NSMatchingReportProgress range :NSMakeRange( 0 , content .length ) withTemplate : @"-" ]; //把多個"-"匹配為一個"-"

     

     //根據"-"分割到數組

     NSArray *arr=[ NSArray array ];

     content=[ NSString stringWithString :content];

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

     NSMutableArray *marr=[ NSMutableArray arrayWithArray :arr];

     [marr removeObject : @"" ];

     return  marr;

 

 

//正則去除網絡標簽
-(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;
}