add method

CHANGELOG.md

@@ -3,10 +3,11 @@
 
 -------------------------------------------------------------------------------------------------------------
 
-# 5.4.4 (2020-09-19)
+# 5.4.4 (2020-09-22)
 
 ### 新特性
 * 【core   】     ServiceLoaderUtil改为使用contextClassLoader（pr#183@Gitee）
+* 【core   】     NetUtil增加getLocalHostName（pr#1103@Github）
 
 ### Bug修复
 

hutool-core/src/main/java/cn/hutool/core/date/DateUtil.java

@@ -1383,30 +1383,6 @@ public class DateUtil extends CalendarUtil {
 		return new DateBetween(beginDate, endDate).betweenMonth(isReset);
 	}
 
-	/**
-	 * 获取两个日期之间所有的月份
-	 * @param start 开始时间
-	 * @param end 结束时间
-	 * @return List<String> 格式为yyyMM格式的月份列表 包含收尾</>
-	 * @since 5.4.4
-	 */
-	public static List<String> getBetweenMonths(Date start, Date end) {
-		List<String> result = new ArrayList<>();
-		SimpleDateFormat sdf = new SimpleDateFormat("yyyyMM");
-		Calendar tempStart = Calendar.getInstance();
-		tempStart.setTime(start);
-		// 加一个月，保证开始和结束同步时返回当月
-		tempStart.add(Calendar.MONTH, 1);
-		Calendar tempEnd = Calendar.getInstance();
-		tempEnd.setTime(end);
-		result.add(sdf.format(start));
-		while (tempStart.before(tempEnd) || tempStart.equals(tempEnd)) {
-			result.add(sdf.format(tempStart.getTime()));
-			tempStart.add(Calendar.MONTH, 1);
-		}
-		return result;
-	}
-
 	/**
 	 * 计算两个日期相差年数<br>
 	 * 在非重置情况下，如果起始日期的月小于结束日期的月，年数要少算1（不足1年）

hutool-core/src/main/java/cn/hutool/core/net/NetUtil.java

@@ -42,7 +42,8 @@ import java.util.TreeSet;
 public class NetUtil {
 
 	public final static String LOCAL_IP = "127.0.0.1";
-	public static String LOCAL_HOSTNAME = "";
+
+	public static String localhostName;
 
 	/**
 	 * 默认最小端口，1024
@@ -535,20 +536,26 @@ public class NetUtil {
 	}
 
 	/**
-	 * 获取主机名称
+	 * 获取主机名称，一次获取会缓存名称
+	 *
 	 * @return 主机名称
 	 * @since 5.4.4
 	 */
 	public static String getLocalHostName() {
-		try {
+		if (StrUtil.isNotBlank(localhostName)) {
-			if (StrUtil.isNotBlank(LOCAL_HOSTNAME)) {
+			return localhostName;
-				return LOCAL_HOSTNAME;
-			}
-			LOCAL_HOSTNAME = InetAddress.getLocalHost().getHostName();
-		} catch (UnknownHostException e) {
-			LOCAL_HOSTNAME = getLocalhostStr();
 		}
-		return LOCAL_HOSTNAME;
+
+		final InetAddress localhost = getLocalhost();
+		if(null != localhost){
+			String name = localhost.getHostName();
+			if(StrUtil.isEmpty(name)){
+				name = localhost.getHostAddress();
+			}
+			localhostName = name;
+		}
+
+		return localhostName;
 	}
 
 	/**

hutool-core/src/test/java/cn/hutool/core/date/DateUtilTest.java

@@ -3,7 +3,6 @@ package cn.hutool.core.date;
 import cn.hutool.core.collection.CollUtil;
 import cn.hutool.core.date.BetweenFormater.Level;
 import cn.hutool.core.date.format.FastDateFormat;
-import cn.hutool.core.lang.Console;
 import org.junit.Assert;
 import org.junit.Test;
 
@@ -820,12 +819,4 @@ public class DateUtilTest {
 		final DateTime parse = DateUtil.parse(dt);
 		Assert.assertEquals("2020-06-03 12:32:12", parse.toString());
 	}
-
-	@Test
-	public void getBetweenMonthsTest() {
-		List<String> months1 = DateUtil.getBetweenMonths(new Date(), new Date());
-		Assert.assertEquals(1, months1.size());
-		List<String> months = DateUtil.getBetweenMonths(DateUtil.parse("2020-05-08 3:12:3"), new Date());
-		Assert.assertEquals(5, months.size());
-	}
 }

hutool-crypto/src/test/java/cn/hutool/crypto/test/asymmetric/SM2Test.java

@@ -229,4 +229,18 @@ public class SM2Test {
 		Assert.assertEquals(data, decryptStr);
 	}
 
+	@Test
+	public void encryptAndSignTest(){
+		SM2 sm2 = SmUtil.sm2();
+
+		String src = "Sm2Test";
+		byte[] data = sm2.encrypt(src, KeyType.PublicKey);
+		byte[] sign =  sm2.sign(src.getBytes());
+
+		Assert.assertTrue(sm2.verify( src.getBytes(), sign));
+
+		byte[] dec =  sm2.decrypt(data, KeyType.PrivateKey);
+		Assert.assertArrayEquals(dec, src.getBytes());
+	}
+
 }

hutool-setting/src/main/java/cn/hutool/setting/Setting.java

@@ -164,6 +164,18 @@ public class Setting extends AbsSetting implements Map<String, String> {
 		Assert.notNull(url, "Null setting url define!");
 		this.init(new UrlResource(url), charset, isUseVariable);
 	}
+
+	/**
+	 * 构造
+	 *
+	 * @param resource      Setting的Resource
+	 * @param charset       字符集
+	 * @param isUseVariable 是否使用变量
+	 * @since 5.4.4
+	 */
+	public Setting(Resource resource, Charset charset, boolean isUseVariable) {
+		this.init(resource, charset, isUseVariable);
+	}
 	// ------------------------------------------------------------------------------------- Constructor end
 
 	/**
@@ -176,7 +188,7 @@ public class Setting extends AbsSetting implements Map<String, String> {
 	 */
 	public boolean init(Resource resource, Charset charset, boolean isUseVariable) {
 		if (resource == null) {
-			throw new NullPointerException("Null setting url define!");
+			throw new NullPointerException("Null setting resource define!");
 		}
 		this.settingUrl = resource.getUrl();
 		this.charset = charset;
@@ -319,10 +331,10 @@ public class Setting extends AbsSetting implements Map<String, String> {
 	}
 
 	/**
-	 * 获取group分组下所有配置键值对，组成新的{@link Setting}
+	 * 获取group分组下所有配置键值对，组成新的Setting
 	 *
 	 * @param group 分组
-	 * @return {@link Setting}
+	 * @return Setting
 	 */
 	public Setting getSetting(String group) {
 		final Setting setting = new Setting();