add dbcp 2

@@ -282,6 +282,11 @@
                 <version>1.4</version>
             </dependency>
             <dependency>
+                <groupId>org.apache.commons</groupId>
+                <artifactId>commons-dbcp2</artifactId>
+                <version>2.1.1</version>
+            </dependency>
+            <dependency>
                 <groupId>commons-fileupload</groupId>
                 <artifactId>commons-fileupload</artifactId>
                 <version>1.3.1</version>