objective-c - 用于解析 html 的正则表达式；

Question

你能帮我制作正则表达式吗？在大字符串中，我需要找到这些子字符串(2 种格式):

http://www.facebook.com/profile.php?id=100002234024152&ref=ffa\ http://www.facebook.com/alesya.yuldasheva?ref=ffa\

我尝试过这些:

@"\\b(https?):\/\/www.facebook.com([.]{*})ref=ffa";
@"[{http:\/\/www.facebook.com}([.]{*}){ref=ffa}]";
@"[http:\/\/www.facebook.com]([.])*[ref=ffa]";

我使用RegexKitLite，其语法与普通的objective c正则表达式相同。

Answer 1

NSError *error = nil;
NSString *htmlAdr = [NSString stringWithContentsOfURL:[NSURL URLWithString:@"http://www.example.com"] encoding:NSUTF8StringEncoding error:&error];
if (error){
    NSLog(@"Yaz");
}
 // NSLog(@"%@", htmlAdr);
NSString *wereWeAreGoingToFind = htmlAdr;
NSString *whatWewAreGoingToFind1 = @"\\bhttps?:\\\\/\\\\/[a-zA-Z0-9\\-.]*\\\\/profile.php\\?id=([\\d]*)\\&ref=ffa";
NSString *whatWewAreGoingToFind = @"\\bhttps?:\\\\/\\\\/[a-zA-Z0-9\\-.]*\\\\/([a-zA-Z0-9\\-.]*)\\?ref=pb";
NSArray *matchArray = [wereWeAreGoingToFind componentsMatchedByRegex:whatWewAreGoingToFind capture:1L];
NSArray *matchArray1 = [wereWeAreGoingToFind componentsMatchedByRegex:whatWewAreGoingToFind1 capture:1L];
matchArray = [matchArray arrayByAddingObjectsFromArray:matchArray1];
NSLog(@"%@", matchArray);