Parsing the XML initialization database

Project development or on-line stage, for convenience, may need to initialize the database: including users, permissions, or some other basic data. What I'm using here is parsing the Xml file initialization database.

(1) the format of the Xml file is as follows:

(2) Servlet configured to initialize data

Configuring in Web . xml

<servlet>

<servlet-name>PersistenceTest</servlet-name>

<servlet-class>com.saving.ecm.servlet.PersistenceInitialize</servlet-class>

<load-on-startup>2</load-on-startup>

</servlet>

(3) when the Tomcat server starts, the Servlet is loaded

public class Persistenceinitialize extends HttpServlet {

Private static final long serialversionuid = 1L;

private static final String FILEPATH = "Initdatabase.xml";

@Override

public void Init () throws Servletexception {

Super.init ();

try {

if user data count = 0

Document document = new

Saxreader (). Read (Thread.CurrentThread (). Getcontextclassloader ()

. getResourceAsStream (FILEPATH));

Inituser (document);// Initialize user

} catch (Throwable e) {

E.printstacktrace ();

}

}

@SuppressWarnings ("Unchecked")

private void Inituser (document document) {

list<node> childNodes = document.selectnodes ("//users/user");

commonaction<user> action = new commonaction<user> (user.class);

for (Node node:childnodes) {

User user;

try {

user = Action.findbyid (Long.parselong (node.valueof ("@id"));

if (user = = null) {

user = new User ();

}

User.setaccount (node.valueof ("@account"));

User.setname (node.valueof ("@name"));

User.setpassword (MD5UTIL.MD5 (node.valueof ("@password"));

User.setemail (node.valueof ("@email"));

User.setrolecode (node.valueof ("@roleCode"));

User.setstatus (node.valueof ("@status"));

User.setcreationtime (System.currenttimemillis ());

action.saveentity (user);

} catch (Throwable e) {

E.printstacktrace ();

}

}

}

}

Parsing the XML initialization database