Objective-C 的正则表达式解决方案

Objective-C 的正则表达式解决方案

objective-c
NSString *email = @"example@example.com";
NSString *pattern = @"^[a-zA-Z0-9]+@[a-zA-Z0-9]+\\.[a-zA-Z0-9]+$";
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:pattern options:NSRegularExpressionCaseInsensitive error:nil];
NSTextCheckingResult *match = [regex firstMatchInString:email options:0 range:NSMakeRange(0, [email length])];
if (match) {
    NSLog(@"邮箱格式正确");
} else {
    NSLog(@"邮箱格式错误");
}

objective-c
NSString *string = @"这是一段文字，其中包含一个链接：https://www.example.com。";
NSString *pattern = @"http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&+]|[!*\\(\\),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+";
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:pattern options:NSRegularExpressionCaseInsensitive error:nil];
NSArray *matches = [regex matchesInString:string options:0 range:NSMakeRange(0, [string length])];
for (NSTextCheckingResult *match in matches) {
    NSRange matchRange = [match range];
    NSString *link = [string substringWithRange:matchRange];
    NSLog(@"链接：%@", link);
}