add hex support

hutool-core/src/main/java/cn/hutool/core/util/NumberUtil.java

@@ -2524,6 +2524,11 @@ public class NumberUtil {
 	 * @since 4.1.15
 	 */
 	public static Number parseNumber(String numberStr) throws NumberFormatException {
+		if(StrUtil.startWithIgnoreCase(numberStr, "0x")){
+			// 0x04表示16进制数
+			return Long.parseLong(numberStr.substring(2), 16);
+		}
+
 		try {
 			final NumberFormat format = NumberFormat.getInstance();
 			if (format instanceof DecimalFormat) {

hutool-core/src/test/java/cn/hutool/core/util/NumberUtilTest.java

@@ -292,6 +292,13 @@ public class NumberUtilTest {
 		Assert.assertEquals(1482L, v2.longValue());
 	}
 
+	@Test
+	public void parseHexNumberTest() {
+		// 千位分隔符去掉
+		final int v1 = NumberUtil.parseNumber("0xff").intValue();
+		Assert.assertEquals(255, v1);
+	}
+
 	@Test
 	public void parseLongTest() {
 		long number = NumberUtil.parseLong("0xFF");