我正在嘗試從字符串中提取文本和十六進(jìn)制顏色。目前符號(hào)“>”有一個(gè)小問題這是我目前得到的代碼；package main.cache;import java.util.Arrays;import java.util.regex.Pattern;public class Main { public static void extract(String string) { final String STARTS_WITH_COLOR_LITERAL = "^[A-Fa-f0-9]{6}|[A-Fa-f0-9]{3}"; final Pattern pattern = Pattern.compile(STARTS_WITH_COLOR_LITERAL); Object[] objects = Arrays.stream(string.split("<col=")).filter(part -> pattern.matcher(part).find()).toArray(); String name; String color = null; for (int i = 0; i < objects.length; i++) { String[] line = objects[i].toString().split(">"); if (line.length == 1) { name = line[0]; } else { color = line[0]; name = line[1]; } System.out.println("Color " + color + ", name " + name); } } public static void main(String[] args) { extract("something before<col=ff00ff>mercides> car<col=ffff00>plates"); }}例如傳遞這個(gè)參數(shù)時(shí)，輸出應(yīng)該是Color null, name something beforeColor ff00ff, name mercides> carColor ffff00, name plates我目前得到的輸出是Color null, name something beforeColor ff00ff, name mercidesColor ffff00, name plates
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如果您正在尋找對(duì)color/name（按此順序），您可以使用：(?><col=(?<color>[A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})>)?(?<text>(?><.*?>)?[^<]+)
static void extract(String string) {
? ? Pattern pattern =
? ? ? ? ? ? Pattern.compile("(?><col=(?<color>[A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})>)?(?<name>(?><.*?>)?[^<]+)");
? ? Matcher m = pattern.matcher(string);
? ? while (m.find()) {
? ? ? ? String color = m.group("color");
? ? ? ? String name = m.group("name");
? ? ? ? System.out.printf("Color %s, name %s\n", color, name);
? ? }
}
/*
Color null, name something before
Color ff00ff, name mercides> car
Color ffff00, name plates
(?><col=(?<color>[A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})>)?是顏色，以六字符開始<col和結(jié)束，它是可選的，所以最后有一個(gè)>?(?<text>(?><.*?>)?[^<]+)名稱組，可以有另一個(gè)應(yīng)答器，但最后一個(gè)字符可以是<
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