diff --git a/src/main/java/com/alibaba/druid/pool/DruidAbstractDataSource.java b/src/main/java/com/alibaba/druid/pool/DruidAbstractDataSource.java
index fb9e333ff8..6b78dd5914 100644
--- a/src/main/java/com/alibaba/druid/pool/DruidAbstractDataSource.java
+++ b/src/main/java/com/alibaba/druid/pool/DruidAbstractDataSource.java
@@ -46,8 +46,6 @@ import javax.security.auth.callback.NameCallback;
 import javax.security.auth.callback.PasswordCallback;
 import javax.sql.DataSource;
 
-import org.h2.util.StringUtils;
-
 import com.alibaba.druid.filter.Filter;
 import com.alibaba.druid.filter.FilterChainImpl;
 import com.alibaba.druid.filter.FilterManager;
@@ -65,6 +63,7 @@ import com.alibaba.druid.util.DruidPasswordCallback;
 import com.alibaba.druid.util.Histogram;
 import com.alibaba.druid.util.IOUtils;
 import com.alibaba.druid.util.JdbcUtils;
+import com.alibaba.druid.util.StringUtils;
 
 /**
  * @author wenshao<szujobs@hotmail.com>
diff --git a/src/main/java/com/alibaba/druid/util/StringUtils.java b/src/main/java/com/alibaba/druid/util/StringUtils.java
index 1b9f0a8108..38a79edd7d 100644
--- a/src/main/java/com/alibaba/druid/util/StringUtils.java
+++ b/src/main/java/com/alibaba/druid/util/StringUtils.java
@@ -183,4 +183,11 @@ public class StringUtils {
     public static void main(String args[]) {
         System.out.println(JSON.toJSONString(getParameters("test?t=1&f=").get("t")));
     }
+    
+    public static boolean equals(String a, String b) {
+        if (a == null) {
+            return b == null;
+        }
+        return a.equals(b);
+    }
 }