Question

我有以下方法从字符串中删除html标记和不需要的字符：

-(NSString *) stringByStrippingHTML: (NSString*) s {
NSRange r;
while ((r = [s rangeOfString:@"<[^>]+>" options:NSRegularExpressionSearch]).location != NSNotFound)
    s = [s stringByReplacingCharactersInRange:r withString:@""];
while ((r = [s rangeOfString:@"&#8217;" options:NSRegularExpressionSearch]).location != NSNotFound)
    s = [s stringByReplacingCharactersInRange:r withString:@"\'"];
while ((r = [s rangeOfString:@"&#8221;" options:NSRegularExpressionSearch]).location != NSNotFound)
    s = [s stringByReplacingCharactersInRange:r withString:@"\""];
while ((r = [s rangeOfString:@"&#8220;" options:NSRegularExpressionSearch]).location != NSNotFound)
    s = [s stringByReplacingCharactersInRange:r withString:@"\""];
while ((r = [s rangeOfString:@"&#8230;" options:NSRegularExpressionSearch]).location != NSNotFound)
    s = [s stringByReplacingCharactersInRange:r withString:@"..."];
while ((r = [s rangeOfString:@"&#8211;" options:NSRegularExpressionSearch]).location != NSNotFound)
    s = [s stringByReplacingCharactersInRange:r withString:@"-"];

return s;
}

我有太多的情况，怎么能以更优雅的方式完成？

Answer 1

我相信NSString有一些内置的方法。 Check this answer out.

Answer 2

google-toolbox-for-mac库（是的，这也适用于iOS）有一些NSString类别方法，可以更有效地转义＆符号编码字符。看看GTMNSString+HTML。

这不会处理第一种情况（剥离HTML标记），但对于您正在进行的其他替换，它应该是一种更快，更全面的解决方案。

Answer 3

除第一种情况外，你可以像[s stringByReplacingOccurrencesOfString:"”" withString:@"\""];一样使用。

在iOS中删除html标记和不需要的字符

3 个答案: