Use Hibernate framework to operate pojo instance, bye bye SQL strings :)

src/main/webapp/WEB-INF/web.xml

@@ -12,69 +12,15 @@
         If you have any problem, please contact loli@sola.love .
     </description>
 
-    <!-- Servlet definitions for the servlets that make up
-         your web application, including initialization
-         parameters.  With Tomcat, you can also send requests
-         to servlets not listed here with a request like this:
-
-           http://localhost:8080/{context-path}/servlet/{classname}
-
-         but this usage is not guaranteed to be portable.  It also
-         makes relative references to images and other resources
-         required by your servlet more complicated, so defining
-         all of your servlets (and defining a mapping to them with
-         a servlet-mapping element) is recommended.
-
-         Servlet initialization parameters can be retrieved in a
-         servlet or JSP page by calling:
-
-             String value =
-               getServletConfig().getInitParameter("name");
-
-         where "name" matches the <param-name> element of
-         one of these initialization parameters.
-
-         You can define any number of servlets, including zero.
-    -->
-
-    <!--
-    <servlet>
-        <servlet-name>C3P0Test</servlet-name>
-        <servlet-class>love.sola.netsupport.C3P0Test</servlet-class>
-    </servlet>
-    -->
-
-    <!-- Define mappings that are used by the servlet container to
-         translate a particular request URI (context-relative) to a
-         particular servlet.  The examples below correspond to the
-         servlet descriptions above.  Thus, a request URI like:
-
-           http://localhost:8080/{contextpath}/graph
-
-         will be mapped to the "graph" servlet, while a request like:
-
-           http://localhost:8080/{contextpath}/saveCustomer.do
-
-         will be mapped to the "controller" servlet.
-
-         You may define any number of servlet mappings, including zero.
-         It is also legal to define more than one mapping for the same
-         servlet, if you wish to.
-    -->
-    <!--
-    <servlet-mapping>
-        <servlet-name>C3P0Test</servlet-name>
-        <url-pattern>/c3p0test</url-pattern>
-    </servlet-mapping>
-    -->
-
-    <!-- Define the default session timeout for your application,
-         in minutes.  From a servlet or JSP page, you can modify
-         the timeout for a particular session dynamically by using
-         HttpSession.getMaxInactiveInterval(). -->
+    <welcome-file-list>
+        <welcome-file>index</welcome-file>
+    </welcome-file-list>
+    <error-page>
+        <location>/index</location>
+    </error-page>
 
     <session-config>
-        <session-timeout>30</session-timeout>    <!-- 30 minutes -->
+        <session-timeout>10</session-timeout>    <!-- 30 minutes -->
     </session-config>
 
 </web-app>