ios html解析， 去除特殊字符，节点

啊

-(NSString *)stringFixed:(NSString *)str{
    NSString *string=str;
    NSScanner * scanner = [NSScanner scannerWithString:string];
    NSString * text = nil;
    while([scanner isAtEnd]==NO)
    {
        //找到标签的起始位置
        [scanner scanUpToString:@"<" intoString:nil];
        //找到标签的结束位置
        [scanner scanUpToString:@">" intoString:&text];
        string = [string stringByReplacingOccurrencesOfString:[NSString stringWithFormat:@"%@>",text] withString:@""];
    }

    return string;
}