java - 正则表达式从字符串中获取特定值

Question

下面的结果是一个字符串输出。

test179901034102 00:00:00:00:00:01 Open
test179901083723 00:00:00:00:00:01 Open
test179901153595 00:00:00:00:00:01 Open
test179901187836 00:00:00:00:00:01 Open

 WebElement element = driver.findElement(By.xpath("//div[contains(@class,'filteredTable')]"));
 System.out.println( element.getText()); // returns the above string 

我的目的是获取值 test179901034102 、 test179901083723 etc 作为与字符串分开的列表。

如何使用正则表达式从下面的字符串中获取值(`test179901034102，test179901083723)

test179901034102 00:00:00:00:00:01 Open
test179901083723 00:00:00:00:00:01 Open
test179901153595 00:00:00:00:00:01 Open
test179901187836 00:00:00:00:00:01 Open

Answer 1

您可以使用^[^]+。

示例:

String s = "test179901034102 00:00:00:00:00:01 Open\n" +
    "test179901083723 00:00:00:00:00:01 Open\n" +
    "test179901153595 00:00:00:00:00:01 Open\n" +
    "test179901187836 00:00:00:00:00:01 Open";

Pattern pattern = Pattern.compile("^[^ ]+", Pattern.MULTILINE);
Matcher matcher = pattern.matcher(s);
while (matcher.find()) {
  System.out.println(matcher.group(0));
}

参见:https://regex101.com/r/aZYgvC/1