diff --git a/hutool-extra/src/main/java/cn/hutool/extra/cglib/BeanCopierCache.java b/hutool-extra/src/main/java/cn/hutool/extra/cglib/BeanCopierCache.java
index 6472c4e45..18d381560 100644
--- a/hutool-extra/src/main/java/cn/hutool/extra/cglib/BeanCopierCache.java
+++ b/hutool-extra/src/main/java/cn/hutool/extra/cglib/BeanCopierCache.java
@@ -42,10 +42,10 @@ public enum BeanCopierCache {
 	 * @return 属性名和Map映射的key
 	 */
 	private String genKey(Class<?> srcClass, Class<?> targetClass, Converter converter) {
-		String key = StrUtil.format("{}#{}", srcClass.getName(), targetClass.getName());
+		StringBuilder key = new StringBuilder().append(StrUtil.format("{}#{}", srcClass.getName(), targetClass.getName()));
 		if(null != converter){
-			key += "#" + converter.getClass().getName();
+			key.append("#").append(converter.getClass().getName());
 		}
-		return key;
+		return key.toString();
 	}
 }
diff --git a/hutool-script/src/main/java/cn/hutool/script/ScriptRuntimeException.java b/hutool-script/src/main/java/cn/hutool/script/ScriptRuntimeException.java
index 2b49a37e5..84f2ede94 100644
--- a/hutool-script/src/main/java/cn/hutool/script/ScriptRuntimeException.java
+++ b/hutool-script/src/main/java/cn/hutool/script/ScriptRuntimeException.java
@@ -81,19 +81,19 @@ public class ScriptRuntimeException extends RuntimeException {
 	 */
 	@Override
 	public String getMessage() {
-		String ret = super.getMessage();
+		StringBuilder ret = new StringBuilder().append(super.getMessage());
 		if (fileName != null) {
-			ret += (" in " + fileName);
+			ret.append(" in ").append(fileName);
 			if (lineNumber != -1) {
-				ret += " at line number " + lineNumber;
+				ret.append(" at line number ").append(lineNumber);
 			}
 
 			if (columnNumber != -1) {
-				ret += " at column number " + columnNumber;
+				ret.append(" at column number ").append(columnNumber);
 			}
 		}
 
-		return ret;
+		return ret.toString();
 	}
 
 	/**