iphone 开发之过滤html标签

过滤字符串中的html标签的方法：

[cpp]
- (NSString *)filterHtmlTag:(NSString *)originHtmlStr{ 
    NSString *result = nil; 
    NSRange arrowTagStartRange = [originHtmlStr rangeOfString:@"<"]; 
    if (arrowTagStartRange.location != NSNotFound) { //如果找到  
        NSRange arrowTagEndRange = [originHtmlStr rangeOfString:@">"]; 
//        NSLog(@"start-> %d   end-> %d", arrowTagStartRange.location, arrowTagEndRange.location);  
//        NSString *arrowSubString = [originHtmlStr substringWithRange:NSMakeRange(arrowTagStartRange.location, arrowTagEndRange.location - arrowTagStartRange.location)];  
        result = [originHtmlStr stringByReplacingCharactersInRange:NSMakeRange(arrowTagStartRange.location, arrowTagEndRange.location - arrowTagStartRange.location + 1) withString:@""]; 
       // NSLog(@"Result--->%@", result);  
        return [self filterHtmlTag:result];    //递归，过滤下一个标签  
    }else{ 
        result = [originHtmlStr stringByReplacingOccurrencesOfString:@"&nbsp;" withString:@""];  // 过滤&nbsp等标签  
        //result = [originHtmlStr stringByReplacingOccurrencesOf  ........  
    } 
    return result; 
} 

- (NSString *)filterHtmlTag:(NSString *)originHtmlStr{
    NSString *result = nil;
    NSRange arrowTagStartRange = [originHtmlStr rangeOfString:@"<"];
    if (arrowTagStartRange.location != NSNotFound) { //如果找到
        NSRange arrowTagEndRange = [originHtmlStr rangeOfString:@">"];
//        NSLog(@"start-> %d   end-> %d", arrowTagStartRange.location, arrowTagEndRange.location);
//        NSString *arrowSubString = [originHtmlStr substringWithRange:NSMakeRange(arrowTagStartRange.location, arrowTagEndRange.location - arrowTagStartRange.location)];
        result = [originHtmlStr stringByReplacingCharactersInRange:NSMakeRange(arrowTagStartRange.location, arrowTagEndRange.location - arrowTagStartRange.location + 1) withString:@""];
       // NSLog(@"Result--->%@", result);
        return [self filterHtmlTag:result];    //递归，过滤下一个标签