From e91d5d8e44b4d64b8a6ba4e087ae16f7e9af611f Mon Sep 17 00:00:00 2001
From: Looly <loolly@aliyun.com>
Date: Thu, 20 Jul 2023 08:59:34 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8DMVEL=E5=8A=A0=E8=BD=BD?=
 =?UTF-8?q?=E9=94=99=E8=AF=AF=E9=97=AE=E9=A2=98?=
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---
 .../cn/hutool/extra/expression/engine/mvel/MvelEngine.java | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/hutool-extra/src/main/java/cn/hutool/extra/expression/engine/mvel/MvelEngine.java b/hutool-extra/src/main/java/cn/hutool/extra/expression/engine/mvel/MvelEngine.java
index adb79a8dd..bc84d9cc0 100644
--- a/hutool-extra/src/main/java/cn/hutool/extra/expression/engine/mvel/MvelEngine.java
+++ b/hutool-extra/src/main/java/cn/hutool/extra/expression/engine/mvel/MvelEngine.java
@@ -14,11 +14,14 @@ import java.util.Map;
  */
 public class MvelEngine implements ExpressionEngine {
 
+	static {
+		checkEngineExist(MVEL.class);
+	}
+
 	/**
 	 * 构造
 	 */
 	public MvelEngine(){
-		checkEngineExist(null);
 	}
 
 	@Override
@@ -26,7 +29,7 @@ public class MvelEngine implements ExpressionEngine {
 		return MVEL.eval(expression, context);
 	}
 
-	private void checkEngineExist(MVEL mvel){
+	private static void checkEngineExist(Class<?> clazz){
 		// do nothing
 	}
 }