去除html代碼中的標簽，獲取純文本內容
-(NSString *)filterHTML:(NSString *)html
{
NSScanner * scanner = [NSScanner scannerWithString:html];
NSString * text = nil;
while([scanner isAtEnd]==NO)
{
//找到標簽的起始位置
[scanner scanUpToString:@"<" intoString:nil];
//找到標簽的結束位置
[scanner scanUpToString:@">" intoString:&text];
//替換字符
html = [html stringByReplacingOccurrencesOfString:[NSString stringWithFormat:@"%@>",text] withString:@""];
}
// NSString * regEx = @"<([^>]*)>";
// html = [html stringByReplacingOccurrencesOfString:regEx withString:@""];
return html;
}
