diff --git a/hutool-core/src/main/java/cn/hutool/core/thread/ExecutorBuilder.java b/hutool-core/src/main/java/cn/hutool/core/thread/ExecutorBuilder.java
index d6f634f9a..228951a2e 100644
--- a/hutool-core/src/main/java/cn/hutool/core/thread/ExecutorBuilder.java
+++ b/hutool-core/src/main/java/cn/hutool/core/thread/ExecutorBuilder.java
@@ -1,5 +1,8 @@
 package cn.hutool.core.thread;
 
+import cn.hutool.core.builder.Builder;
+import cn.hutool.core.util.ObjectUtil;
+
 import java.util.concurrent.ArrayBlockingQueue;
 import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.ExecutorService;
@@ -11,12 +14,16 @@ import java.util.concurrent.ThreadFactory;
 import java.util.concurrent.ThreadPoolExecutor;
 import java.util.concurrent.TimeUnit;
 
-import cn.hutool.core.builder.Builder;
-import cn.hutool.core.util.ObjectUtil;
-
 /**
  * {@link ThreadPoolExecutor} 建造者
  *
+ * <pre>
+ *     1. 如果池中任务数 &lt; corePoolSize     -》 放入立即执行
+ *     2. 如果池中任务数 &gt; corePoolSize     -》 放入队列等待
+ *     3. 队列满                              -》 新建线程立即执行
+ *     4. 执行中的线程 &gt; maxPoolSize        -》 触发handler（RejectedExecutionHandler）异常
+ * </pre>
+ *
  * @author looly
  * @since 4.1.9
  */
@@ -39,7 +46,7 @@ public class ExecutorBuilder implements Builder<ThreadPoolExecutor> {
 	 */
 	private long keepAliveTime = TimeUnit.SECONDS.toNanos(60);
 	/**
-	 * 队列，用于存在未执行的线程
+	 * 队列，用于存放未执行的线程
 	 */
 	private BlockingQueue<Runnable> workQueue;
 	/**
@@ -105,7 +112,7 @@ public class ExecutorBuilder implements Builder<ThreadPoolExecutor> {
 	 *
 	 * <pre>
 	 * 1. {@link SynchronousQueue}    它将任务直接提交给线程而不保持它们。当运行线程小于maxPoolSize时会创建新线程，否则触发异常策略
-	 * 2. {@link LinkedBlockingQueue} 默认无界队列，当运行线程大于corePoolSize时始终放入此队列，此时maximumPoolSize无效。
+	 * 2. {@link LinkedBlockingQueue} 默认无界队列，当运行线程大于corePoolSize时始终放入此队列，此时maxPoolSize无效。
 	 *                        当构造LinkedBlockingQueue对象时传入参数，变为有界队列，队列满时，运行线程小于maxPoolSize时会创建新线程，否则触发异常策略
 	 * 3. {@link ArrayBlockingQueue}  有界队列，相对无界队列有利于控制队列大小，队列满时，运行线程小于maxPoolSize时会创建新线程，否则触发异常策略
 	 * </pre>
diff --git a/hutool-core/src/main/java/cn/hutool/core/thread/ThreadUtil.java b/hutool-core/src/main/java/cn/hutool/core/thread/ThreadUtil.java
index ab8ba9ef1..b7a5fe9db 100644
--- a/hutool-core/src/main/java/cn/hutool/core/thread/ThreadUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/thread/ThreadUtil.java
@@ -31,7 +31,7 @@ public class ThreadUtil {
 	 * @param corePoolSize 同时执行的线程数大小
 	 * @return ExecutorService
 	 */
-	public static ExecutorService newExecutor(int corePoolSize) {
+		public static ExecutorService newExecutor(int corePoolSize) {
 		ExecutorBuilder builder = ExecutorBuilder.create();
 		if (corePoolSize > 0) {
 			builder.setCorePoolSize(corePoolSize);
diff --git a/hutool-crypto/src/test/java/cn/hutool/crypto/test/ECIESTest.java b/hutool-crypto/src/test/java/cn/hutool/crypto/test/asymmetric/ECIESTest.java
similarity index 90%
rename from hutool-crypto/src/test/java/cn/hutool/crypto/test/ECIESTest.java
rename to hutool-crypto/src/test/java/cn/hutool/crypto/test/asymmetric/ECIESTest.java
index ca83c61ad..1b83fe4f0 100644
--- a/hutool-crypto/src/test/java/cn/hutool/crypto/test/ECIESTest.java
+++ b/hutool-crypto/src/test/java/cn/hutool/crypto/test/asymmetric/ECIESTest.java
@@ -1,4 +1,4 @@
-package cn.hutool.crypto.test;
+package cn.hutool.crypto.test.asymmetric;
 
 import cn.hutool.core.util.StrUtil;
 import cn.hutool.crypto.asymmetric.ECIES;
diff --git a/hutool-crypto/src/test/java/cn/hutool/crypto/test/RSATest.java b/hutool-crypto/src/test/java/cn/hutool/crypto/test/asymmetric/RSATest.java
similarity index 97%
rename from hutool-crypto/src/test/java/cn/hutool/crypto/test/RSATest.java
rename to hutool-crypto/src/test/java/cn/hutool/crypto/test/asymmetric/RSATest.java
index fcb9faa70..f8c309612 100644
--- a/hutool-crypto/src/test/java/cn/hutool/crypto/test/RSATest.java
+++ b/hutool-crypto/src/test/java/cn/hutool/crypto/test/asymmetric/RSATest.java
@@ -1,4 +1,4 @@
-package cn.hutool.crypto.test;
+package cn.hutool.crypto.test.asymmetric;
 
 import cn.hutool.core.codec.Base64;
 import cn.hutool.core.util.ArrayUtil;
diff --git a/hutool-crypto/src/test/java/cn/hutool/crypto/test/SM2Test.java b/hutool-crypto/src/test/java/cn/hutool/crypto/test/asymmetric/SM2Test.java
similarity index 90%
rename from hutool-crypto/src/test/java/cn/hutool/crypto/test/SM2Test.java
rename to hutool-crypto/src/test/java/cn/hutool/crypto/test/asymmetric/SM2Test.java
index a5ed710d8..56abb282d 100644
--- a/hutool-crypto/src/test/java/cn/hutool/crypto/test/SM2Test.java
+++ b/hutool-crypto/src/test/java/cn/hutool/crypto/test/asymmetric/SM2Test.java
@@ -1,4 +1,4 @@
-package cn.hutool.crypto.test;
+package cn.hutool.crypto.test.asymmetric;
 
 import cn.hutool.core.codec.Base64;
 import cn.hutool.core.util.CharsetUtil;
@@ -19,9 +19,8 @@ import java.security.PublicKey;
 
 /**
  * SM2算法单元测试
- * 
- * @author Looly, Gsealy
  *
+ * @author Looly, Gsealy
  */
 public class SM2Test {
 
@@ -71,7 +70,7 @@ public class SM2Test {
 		byte[] decrypt = sm2.decrypt(encrypt, KeyType.PrivateKey);
 		Assert.assertEquals("我是一段测试aaaa", StrUtil.str(decrypt, CharsetUtil.CHARSET_UTF_8));
 	}
-	
+
 	@Test
 	public void sm2BcdTest() {
 		String text = "我是一段测试aaaa";
@@ -138,6 +137,19 @@ public class SM2Test {
 
 		KeyPair pair = SecureUtil.generateKeyPair("SM2");
 
+		final SM2 sm2 = new SM2(pair.getPrivate(), pair.getPublic());
+
+		byte[] sign = sm2.sign(content.getBytes());
+		boolean verify = sm2.verify(content.getBytes(), sign);
+		Assert.assertTrue(verify);
+	}
+
+	@Test
+	public void sm2SignAndVerifyUseKeyTest2() {
+		String content = "我是Hanley.";
+
+		KeyPair pair = SecureUtil.generateKeyPair("SM2");
+
 		final SM2 sm2 = new SM2(//
 				HexUtil.encodeHexStr(pair.getPrivate().getEncoded()), //
 				HexUtil.encodeHexStr(pair.getPublic().getEncoded())//
@@ -162,7 +174,7 @@ public class SM2Test {
 	}
 
 	@Test
-	public void sm2WithPointTest(){
+	public void sm2WithPointTest() {
 		String d = "FAB8BBE670FAE338C9E9382B9FB6485225C11A3ECB84C938F10F20A93B6215F0";
 		String x = "9EF573019D9A03B16B0BE44FC8A5B4E8E098F56034C97B312282DD0B4810AFC3";
 		String y = "CC759673ED0FC9B9DC7E6FA38F0E2B121E02654BF37EA6B63FAF2A0D6013EADF";
@@ -176,7 +188,7 @@ public class SM2Test {
 	}
 
 	@Test
-	public void sm2PlainWithPointTest(){
+	public void sm2PlainWithPointTest() {
 		// 测试地址：https://i.goto327.top/CryptTools/SM2.aspx?tdsourcetag=s_pctim_aiomsg
 
 		String d = "FAB8BBE670FAE338C9E9382B9FB6485225C11A3ECB84C938F10F20A93B6215F0";
diff --git a/hutool-crypto/src/test/java/cn/hutool/crypto/test/SignTest.java b/hutool-crypto/src/test/java/cn/hutool/crypto/test/asymmetric/SignTest.java
similarity index 96%
rename from hutool-crypto/src/test/java/cn/hutool/crypto/test/SignTest.java
rename to hutool-crypto/src/test/java/cn/hutool/crypto/test/asymmetric/SignTest.java
index 33d88203e..a16d4f562 100644
--- a/hutool-crypto/src/test/java/cn/hutool/crypto/test/SignTest.java
+++ b/hutool-crypto/src/test/java/cn/hutool/crypto/test/asymmetric/SignTest.java
@@ -1,4 +1,4 @@
-package cn.hutool.crypto.test;
+package cn.hutool.crypto.test.asymmetric;
 
 import cn.hutool.core.map.MapUtil;
 import org.junit.Assert;
diff --git a/hutool-crypto/src/test/java/cn/hutool/crypto/test/HmacTest.java b/hutool-crypto/src/test/java/cn/hutool/crypto/test/digest/HmacTest.java
similarity index 94%
rename from hutool-crypto/src/test/java/cn/hutool/crypto/test/HmacTest.java
rename to hutool-crypto/src/test/java/cn/hutool/crypto/test/digest/HmacTest.java
index 1fd247926..b29e6d47a 100644
--- a/hutool-crypto/src/test/java/cn/hutool/crypto/test/HmacTest.java
+++ b/hutool-crypto/src/test/java/cn/hutool/crypto/test/digest/HmacTest.java
@@ -1,4 +1,4 @@
-package cn.hutool.crypto.test;
+package cn.hutool.crypto.test.digest;
 
 import org.junit.Assert;
 import org.junit.Test;
diff --git a/hutool-crypto/src/test/java/cn/hutool/crypto/test/AESTest.java b/hutool-crypto/src/test/java/cn/hutool/crypto/test/symmetric/AESTest.java
similarity index 88%
rename from hutool-crypto/src/test/java/cn/hutool/crypto/test/AESTest.java
rename to hutool-crypto/src/test/java/cn/hutool/crypto/test/symmetric/AESTest.java
index 87dd38f2f..f89c9cfc2 100644
--- a/hutool-crypto/src/test/java/cn/hutool/crypto/test/AESTest.java
+++ b/hutool-crypto/src/test/java/cn/hutool/crypto/test/symmetric/AESTest.java
@@ -1,4 +1,4 @@
-package cn.hutool.crypto.test;
+package cn.hutool.crypto.test.symmetric;
 
 import cn.hutool.crypto.Mode;
 import cn.hutool.crypto.Padding;
diff --git a/hutool-crypto/src/test/java/cn/hutool/crypto/test/DesTest.java b/hutool-crypto/src/test/java/cn/hutool/crypto/test/symmetric/DesTest.java
similarity index 92%
rename from hutool-crypto/src/test/java/cn/hutool/crypto/test/DesTest.java
rename to hutool-crypto/src/test/java/cn/hutool/crypto/test/symmetric/DesTest.java
index 649c35d2c..34554aeda 100644
--- a/hutool-crypto/src/test/java/cn/hutool/crypto/test/DesTest.java
+++ b/hutool-crypto/src/test/java/cn/hutool/crypto/test/symmetric/DesTest.java
@@ -1,4 +1,4 @@
-package cn.hutool.crypto.test;
+package cn.hutool.crypto.test.symmetric;
 
 import cn.hutool.core.util.StrUtil;
 import cn.hutool.crypto.Mode;
diff --git a/hutool-crypto/src/test/java/cn/hutool/crypto/test/RC4Test.java b/hutool-crypto/src/test/java/cn/hutool/crypto/test/symmetric/RC4Test.java
similarity index 92%
rename from hutool-crypto/src/test/java/cn/hutool/crypto/test/RC4Test.java
rename to hutool-crypto/src/test/java/cn/hutool/crypto/test/symmetric/RC4Test.java
index 5785182af..7869edc6a 100644
--- a/hutool-crypto/src/test/java/cn/hutool/crypto/test/RC4Test.java
+++ b/hutool-crypto/src/test/java/cn/hutool/crypto/test/symmetric/RC4Test.java
@@ -1,4 +1,4 @@
-package cn.hutool.crypto.test;
+package cn.hutool.crypto.test.symmetric;
 
 import org.junit.Assert;
 import org.junit.Test;
diff --git a/hutool-crypto/src/test/java/cn/hutool/crypto/test/SymmetricTest.java b/hutool-crypto/src/test/java/cn/hutool/crypto/test/symmetric/SymmetricTest.java
similarity index 95%
rename from hutool-crypto/src/test/java/cn/hutool/crypto/test/SymmetricTest.java
rename to hutool-crypto/src/test/java/cn/hutool/crypto/test/symmetric/SymmetricTest.java
index 0580ac3fd..7b490c816 100644
--- a/hutool-crypto/src/test/java/cn/hutool/crypto/test/SymmetricTest.java
+++ b/hutool-crypto/src/test/java/cn/hutool/crypto/test/symmetric/SymmetricTest.java
@@ -1,4 +1,4 @@
-package cn.hutool.crypto.test;
+package cn.hutool.crypto.test.symmetric;
 
 import cn.hutool.core.util.CharsetUtil;
 import cn.hutool.core.util.RandomUtil;