Latest Tutorials| Questions and Answers|Ask Questions?|Site Map



Home Struts Hibernate-spring User Registration Action Class and DAO code

Related Tutorials


 
 

Share on Google+Share on Google+

User Registration Action Class and DAO code

Advertisement
In this section we will explain how to write code for action class and code for performing database operations (saving data into database).

User Registration Action Class and DAO code

     

In this section we will explain how to write code for action class and code for performing database operations (saving data into database).

Developing Action Class

The Action Class UserRegisterAction.java process the user registration request. It saves the user information into database with the help of "SpringHibernateDao" bean.

Here is the full code of  UserRegisterAction.java:

package roseindia.web.struts.action;

import roseindia.services.ServiceFinder;
import roseindia.web.struts.form.UserRegisterForm;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;

public class UserRegisterAction extends Action {

  public ActionForward execute(ActionMapping mapping, ActionForm form,
  HttpServletRequest request, HttpServletResponse response)
  throws Exception {
  UserRegisterForm objForm = (UserRegisterFormform;

  //Utilities util=new Utilities();
  //  Retrieve the DAO Reference
  roseindia.dao.SpringHibernateDAO springHibernateDAO = (roseindia.dao.SpringHibernateDAO
   ServiceFinder

  .getContext(request).getBean("SpringHibernateDao");
  //By Default show the Add/Edit Page
  String forwardToPage = "input";
  String strError = "";

  try {

  

  String strParent = "0";

  boolean ValidUsernameStatus = springHibernateDAO
  .checkValidUserName(objForm.getUserid());
  

  

  //In case of form submit Add/Update the data
  if (objForm.getActionUpdateData().equals("update")) {
  //In case of Add, Add the data into database
  
  if (objForm.getAction().equals("add")) {

  if (ValidUsernameStatus == false) {

  
  roseindia.dao.hibernate.Login pojoObj = new roseindia.dao.hibernate.Login();

  pojoObj.setLoginid(objForm.getUserid());
  pojoObj.setPassword(objForm.getPassword());
  pojoObj.setAddress(objForm.getAddress());
  pojoObj.setPhno(Integer.parseInt(objForm.getPhno()));
  pojoObj.setId(objForm.getId());
  pojoObj.setEmail(objForm.getEmail());
  //Add the data
  springHibernateDAO.addUser(pojoObj);
  
  forwardToPage = "success";

  else {

  // Create object of ActionMesssages
  ActionMessages errors = new ActionMessages();

  errors.add("invalidUsername"new ActionMessage(
  "error.invalidUsername.invalid"));
  saveErrors(request, errors);
  
  return mapping.findForward("input");
  }

  }//User updates the data, update the user details
  if (objForm.getAction().equals("update")) {
  //System.out.println("Update the Data");
  roseindia.dao.hibernate.Login pojoObj = springHibernateDAO
  .loadUser(objForm.getId().toString());
  pojoObj.setLoginid(objForm.getUserid());
  pojoObj.setPassword(objForm.getPassword());
  pojoObj.setAddress(objForm.getAddress());
  pojoObj.setPhno(Integer.parseInt(objForm.getPhno()));
  pojoObj.setId(objForm.getId());
  pojoObj.setEmail(objForm.getEmail());
  //Update the data
  springHibernateDAO.updateUser(pojoObj);
  forwardToPage = "updated";
  }
  }
  //In case of Edit retrieve the data from datbase and set the values in the form obj
  if (objForm.getAction().equals("Edit")) {

  
  HttpSession session = request.getSession();
  String id = (String)session.getAttribute("ID");

  
  //Retrieve the data from database
  roseindia.dao.hibernate.Login pojoObj = springHibernateDAO.loadUser(id);
  
  objForm.setId(pojoObj.getId());
  objForm.setUserid(pojoObj.getLoginid());
  objForm.setPassword(pojoObj.getPassword());
  objForm.setAddress(pojoObj.getAddress());
  objForm.setEmail(pojoObj.getEmail());

  objForm.setPhno(String.valueOf(pojoObj.getPhno()));
  //for the edit form
  forwardToPage = "input";
  //Set the action to update
  objForm.setAction("update");
  }

  catch (Exception e) {
  forwardToPage = "input";
  strError = e.getMessage();

  System.out.println("===> Error:" + strError);
  }
  //Display the registration form to the user
  return mapping.findForward(forwardToPage);

  }
}

Save the above code into the file UserRegisterAction.java in the project\WEB-INF\src\java\roseindia\web\struts\action directory.

Understanding the Action Class

a) Getting the SpringHibernateDao Reference
Following code gets the reference of SpringHibernate.
  //Retrieve the DAO Reference
  roseindia.dao.SpringHibernateDAO springHibernateDAO = (roseindia.dao.SpringHibernateDAO) ServiceFinder
  .getContext(request).getBean("SpringHibernateDao");
  

b) Checking for the New user Registration
Following code checks for the user restoration information. This is necessay as we using the same action class (UserRegistrationAction.java) for modification of user profile.

if (objForm.getAction().equals("add")) {

  //The Save the user information into database

}

c) Creation and populating the POJO object
We are using Hibernate so, to persist the User information into database we will first create object of Login class and populate it with requied data.

  roseindia.dao.hibernate.Login pojoObj = new roseindia.dao.hibernate.Login();

  pojoObj.setLoginid(objForm.getUserid());
  pojoObj.setPassword(objForm.getPassword());
  pojoObj.setAddress(objForm.getAddress());
  pojoObj.setPhno(Integer.parseInt(objForm.getPhno()));
  pojoObj.setId(objForm.getId());
  pojoObj.setEmail(objForm.getEmail());

c) Persisting the POJO object
Following code persists the data into database.
  
//Update the data
  springHibernateDAO.updateUser(pojoObj);

Configurations to be made into struts-config.xml

a) Add the form bean entry:
<form-bean name="UserRegisterForm" 
  type="roseindia.web.struts.form.UserRegisterForm">
</form-bean>

b) Action mapping entry:
<action
  path="/userregister"
  name="UserRegisterForm"
  scope="request"
  validate="true"
  input="/pages/user/userRegister.jsp"
  type="roseindia.web.struts.action.UserRegisterAction">
  <forward name="success" path="/pages/user/registersuccess.jsp"/>
  <forward name="input" path="/pages/user/userRegister.jsp"/>
  <forward name="updated" path="/pages/user/updatesuccess.jsp"/>
</action>

 Now the registration form is ready to test. You can compile and run the application to test the Registration Form.

Advertisements

If you enjoyed this post then why not add us on Google+? Add us to your Circles



Liked it!  Share this Tutorial


Follow us on Twitter, or add us on Facebook or Google Plus to keep you updated with the recent trends of Java and other open source platforms.

Posted on: January 19, 2008

Related Tutorials

Discuss: User Registration Action Class and DAO code   View All Comments

Post your Comment


Your Name (*) :
Your Email :
Subject (*):
Your Comment (*):
  Reload Image
 
 
Comments:0
DMCA.com