在的NSString搜索与特​​定文字和结尾加上一个＆QUOT开头的单词; [英] Search in a NSString for words that begin with specific text and end with a "

问题描述

我有一个包含网页的HTML code一的NSString。
现在，我如何搜索的整个字符串为所有开头写着数据SRC =HTTP：//，结束了？
我将它们保存在一个数组。
我的字符串被称为urlPage

I have a NSString that contains the html code of a webpage. Now, how do i search on the whole string for all the words that start with 'data-src="http://' and end with a " ? I'll save them in an array. My string is called urlPage

PS：我不想要的话有数据SRC =HTTP：//和。我只是想的话这2

PS: i dont want the words to have the 'data-src="http://' and " . I just want the words between these 2

推荐答案

下面是一些例子code：

Here is some example code:

NSString *string;
NSString *pattern;
NSRegularExpression *regex;

string = @" aa data-src=\"http://test1\" cd data-src=\"http://test2\" cd";
pattern = @"data-src=\"http://([^\"]+)\"";

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 range = [match rangeAtIndex:1];
    NSLog(@"match: '%@'", [string substringWithRange:range]);
}

的NSLog输出：结果
匹配：'TEST1'结果
比赛：test2的

NSLog output:
match: 'test1'
match: 'test2'

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