<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
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SimpleUrlHandlerMapping:
<bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="urlMap">
<map>
<entry key="/test/userPage.do"><ref bean="userController"/></entry>
</map>
</property>
</bean>
Controllers :
<bean id="userFormValidator" class="com.UserFormValidator"/>
<bean id="userController" class="com.UserController">
<property name="sessionForm"><value>true</value></property>
<property name="commandName"><value>userBean</value></property>
<property name="commandClass"><value>com.UserBean</value></property>
<property name="validator"><ref bean="userFormValidator"/></property>
<property name="formView"><value>userForm</value></property>
<property name="successView"><value>success</value></property>
<property name="userdao"><ref bean="userdao"/></property>
</bean>
If in the browser you call http://localhost:8080/springhibernate/test/userPage.do then
formBackingObject() method of UserController class will be called and forward to /WEB-INF/jsp/userForm.jsp based on below configuration
<property name="formView"><value>userForm</value></property>
formBackingObject() method return formView.
Step 3. Controller classes
UserController.java
If in the browser you call http://localhost:8080/springhibernate/test/userPage.do then
formBackingObject() method of UserController class will be called and forward to /WEB-INF/jsp/userForm.jsp based on below configuration
<property name="formView"><value>userForm</value></property>
package com;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.SimpleFormController;
public class UserController extends SimpleFormController{
private UserDAO userdao;
public Object formBackingObject(HttpServletRequest request) throws ServletException
{
UserBean backingObject = new UserBean();
System.out.println("formBackingObject");
return backingObject;
}
public ModelAndView onSubmit(Object command) throws ServletException {
UserBean user = (UserBean)command;
System.out.println("username :"+user.getUserName());
System.out.println("dept :"+user.getDeptName());
getUserdao().saveUser(user);
//Now you can validate to database
return new ModelAndView("succes");
}
/**
* @return Returns the userdao.
*/
public UserDAO getUserdao() {
return userdao;
}
/**
* @param userdao The userdao to set.
*/
public void setUserdao(UserDAO userdao) {
this.userdao = userdao;
}
}
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In the userForm.jsp
<form method="post" action="/springhibernate/test/userPage.do">
<input type="submit" alignment="center" value="Save">
on submit the save button call will goto onSubmit() method of the UserController.java
and besed on return new ModelAndView("succes"); contoller forward to /WEB-INF/jsp/succes.jsp
Spring and Hibernate Integration
Step 4. applicationContext.xml
applicationContext.xml contains all the Dependency Injections . And it contains hibernate SessionFactory information also.
Here Hibernate integatred with Spring.
userservice object has userdao object as setter Injection
userdao object has sessionFactory object as setter Injection.
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<bean id="myDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName"><value>com.mysql.jdbc.Driver</value></property>
<property name="url"><value>jdbc:mysql://localhost:3306/techfaq</value></property>
<property name="username"><value>techfaq</value></property>
<property name="password"><value>techfaq</value></property>
</bean>
<bean id="mySessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource"><ref bean="myDataSource"/></property>
<property name="mappingResources">
<list>
<value>/com/user.hbm.xml</value>
</list>
</property>
<property name="hibernateProperties">
<value>
hibernate.dialect=org.hibernate.dialect.MySQLDialect
</value>
</property>
</bean>
<bean id="userdao" class="com.UserDAO">
<property name="sessionFactory"><ref bean="mySessionFactory"/></property>
</bean>
</beans>
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here is the relation between userController and userdao. (in the test-servlet.xml)
<bean id="userController" class="com.UserController">
<property name="sessionForm"><value>true</value></property>
<property name="commandName"><value>userBean</value></property>
<property name="commandClass"><value>com.UserBean</value></property>
<property name="validator"><ref bean="userFormValidator"/></property>
<property name="formView"><value>userForm</value></property>
<property name="successView"><value>success</value></property>
<property name="userdao"><ref bean="userdao"/></property>
</bean>
Hibernate Part
Step 1. Create Table in Data Base
CREATE TABLE `techfaq`.`user_test`
(
`user_id` int(10) unsigned NOT NULL auto_increment,
`user_name` varchar(45) default NULL,
`dept_name` varchar(45) default NULL,
PRIMARY KEY (`user_id`));
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Step 2. user.hbm.xml which maps to user_test TABLE
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="com.UserBean" table="USER_TEST">
<id name="userId" column="USER_ID" type="int">
<generator class="native"/>
</id>
<property name="userName" column="user_name"/>
<property name="deptName" column="dept_name"/>
</class>
</hibernate-mapping>
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Step 3. UserBean.java which maps to user.hbm.xml and user_test TABLE
package com;
public class UserBean {
int userId;
String userName;
String deptName;
/**
* @return Returns the userName.
*/
public String getUserName() {
return userName;
}
/**
* @param userName The userName to set.
*/
public void setUserName(String userName) {
this.userName = userName;
}
/**
* @return Returns the deptName.
*/
public String getDeptName() {
return deptName;
}
/**
* @param deptName The deptName to set.
*/
public void setDeptName(String deptName) {
this.deptName = deptName;
}
/**
* @return Returns the userId.
*/
public int getUserId() {
return userId;
}
/**
* @param userId The userId to set.
*/
public void setUserId(int userId) {
this.userId = userId;
}
}
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Step 4. UserDAO.java which is used to save user details into Data Base
package com;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.springframework.orm.hibernate.support.HibernateDaoSupport;
public class UserDAO {
private SessionFactory sessionFactory;
public void saveUser(UserBean user){
Session session = getSessionFactory().openSession();
try
{
Transaction tx = session.beginTransaction();
session.save(user);
tx.commit();
}catch(Exception e){
e.printStackTrace();
}finally{
session.close();
}
}
/**
* @return Returns the sessionFactory.
*/
public SessionFactory getSessionFactory() {
return sessionFactory;
}
/**
* @param sessionFactory The sessionFactory to set.
*/
public void setSessionFactory(SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
}
}
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