Gnanasuriyan

 I hope you have visited my part1 of my tutorial . Let’s see the steps for integrating hibernate framework into Spring MVC. Here I have used MySQL database. I have created one database called “ springmvc ” and created one table called “ user ” with userid, username, password fields.  I have inserted some records into table like this. Step 1: Creating User POJO class.  We need to create a User POJO class for mapping user table. Ok let’s create it. Step 2: Creating hibernate mapping xml file for user class.  In hibernate we need to create hibernate mapping xml file for all domain class for mapping into corresponding database table. Instead of creating xml file you can use annotation for mapping domain class into database table. This is my mapping xml document created for mapping our user domain class into user database table. Step 3: Creating authenticate service class.  The method “verifyUserNameAndPassword” pres...

 I hope developers working in web application development might hear about MVC architecture. Almost all technologies provide support for MVC based web application development, but the success is based on many factors like reusable of the code, maintenance of the code, future adaption of the code, etc..,  The success of the Spring MVC is “ Open for extension and closed for modification ” principle. Using Spring MVC the developers can easily develop MVC based web application. We don’t need any steep learning curve at the same time we need to know the basics of spring framework and MVC architecture. The Spring MVC consists of following important components. 1. Dispatcher servlet 2. Controller 3. View Resolver 4. Model Spring MVC - Overview  The overall architecture of Spring MVC is shown here.  1. When “Dispatcher Servlet” gets any request from client, it finds the corresponding mapped controller for the request and just dispatches the request to the c...

 The "parent" element of <bean> tag is used for reusing configuration parameters. This "parent" attribute accepts a reference to an another bean of same type. All the parameters that are configured in parent bean are also available in child bean. See the below example.  In this example I have configured two beans in beans.xml file namely bean1 and bean2. The bean2 have an parent attribute value as "bean1", In this situation the bean2 inherits the all the properties and values of the bean1 (name1, name2, name3, name4 - properties and values).   If you want to override the some of the property of bean1 then you have to redefine the same properties into child bean. Here the properties name3 and name4 are  override-ed by child bean (bean2). 

In this example I am going to give example for array configuration in spring application using XML bean configuration file. This is my bean, here I have created the setter and getter method for array variable ("countryArray").    public class ArrayConfig {       private String[] countryArray ;       public String[] getCountryArray() {             return countryArray ;       }       public void setCountryArray(String[] countryArray) {             this . countryArray = countryArray;       }       } This is my beans.xml file. The <array> tag is used for configuring array.    <? xml version = "1.0" encoding = "UTF-8" ?> < beans xmlns = "http://w...

In this example I am going to give example for array list configuration in spring application using XML bean configuration file. This is my bean, here I have created the setter and getter method for array list variable ("countryList").    import java.util.ArrayList;   public class ArrayListConfig {       private ArrayList<String> countryList ;       public ArrayList<String> getCountryList() {             return countryList ;       }       public void setCountryList(ArrayList<String> countryList ) {             this . countryList = countryList ;       }        } This is my beans.xml file. The <list> tag is used for configuring list. ...

In spring application, you have two ways for injecting beans. These are,  1. Setter based injection.  2. Constructor based injection. You can able to use primitive type as well as reference type for injecting. Example for setter based injection. In this example I am going to inject the room object into home using setter method. 1.  Create a new Room bean like this.      package com.setterinject;      public class Room {         private String roomName ;          public String getRoomName() {             return roomName ;        }          public void setRoomName(String roomName) {             this . roomName = roomName;        }      } 2 .Create a new Home bean POJO ...