Struts2 and Hibernate2 CRUD Example in NetBeans


1.postgres sql query
create database as student

CREATE SEQUENCE result_resultid_seq;

CREATE TABLE Result (
resultid BIGINT NOT NULL DEFAULT nextval('result_resultid_seq'),
semester VARCHAR(250) NOT NULL,
mark VARCHAR(250) NOT NULL,
studentid VARCHAR(250) NOT NULL,
CONSTRAINT resultid PRIMARY KEY (resultid)
);


ALTER SEQUENCE result_resultid_seq OWNED BY Result.resultid;

CREATE SEQUENCE studentdetails_studentid_seq;

CREATE TABLE studentDetails (
studentid BIGINT NOT NULL DEFAULT nextval('studentdetails_studentid_seq'),
studentName VARCHAR(250) NOT NULL,
StudentGender VARCHAR(250) NOT NULL,
studentClass VARCHAR(250) NOT NULL,
studentDivision VARCHAR(250) NOT NULL,
result_student_id integer,
CONSTRAINT studentid PRIMARY KEY (studentid)
);


ALTER SEQUENCE studentdetails_studentid_seq OWNED BY studentDetails.studentid;



2.web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app>
<display-name>Student</display-name>
<context-param>
<param-name>tilesDefinitions</param-name>
<param-value>/WEB-INF/tiles.xml</param-value>
</context-param>

<filter>
<filter-name>struts2</filter-name>
<filter-class>
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
</filter-class>
<!--filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class-->
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>



3 create struts.xml in source Pakage

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts SYSTEM "struts-2.0.dtd">
<struts>
<constant name="struts.enable.DynamicMethodInvocation" value="false" />
<constant name="struts.devMode" value="true" />
<package name="default" extends="struts-default" namespace="/">

<action name="test">
<result>test.jsp</result>
</action>
<action name="one" class="com.inzane.student.action.StudentAction" method="view">
<result name="success">/students.jsp</result>
</action>
<action name="addstudent" class="com.inzane.student.action.StudentAction" method="add">
<result name="success">students.jsp</result>
</action>
<action name="delete" class="com.inzane.student.action.StudentAction" method="delete">
<result name="success">students.jsp</result>
</action>
<action name="edit" class="com.inzane.student.action.StudentAction" method="edit">
<result name="success">editstudent.jsp</result>
</action>
</package>
</struts>

4 create hibernate.cfg.xml in source Package

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</property>
<property name="hibernate.connection.driver_class">org.postgresql.Driver</property>
<property name="hibernate.connection.url">jdbc:postgresql://localhost:5432/student</property>
<property name="hibernate.connection.username">postgres</property>
<property name="hibernate.connection.password">qwerty</property>
<property name="connection.pool_size">1</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="current_session_context_class">thread</property>
<property name="cache.provider_class">
org.hibernate.cache.NoCacheProvider
</property>
<property name="show_sql">true</property>
<property name="hbm2ddl.auto">update</property>
<mapping class="com.inzane.student.model.StudentDetails" />
</session-factory>
</hibernate-configuration>

5 create HibernateUtil in source Package com.inzane.student.Util


package com.inzane.student.Util;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.AnnotationConfiguration;
public class HibernateUtil {
private static final SessionFactory sessionFactory = buildSessionFactory();
private static SessionFactory buildSessionFactory() {
try {
// Create the SessionFactory from hibernate.cfg.xml
return new AnnotationConfiguration().configure()
.buildSessionFactory();
} catch (Throwable ex) {
System.err.println("Initial SessionFactory creation failed." + ex);
throw new ExceptionInInitializerError(ex);
}
}
public static SessionFactory getSessionFactory() {
return sessionFactory;
}
}


6 create StudentDetails entity class in source package com.inzane.student.model

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package com.inzane.student.model;

import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;

/**
*
* @author Krishnadas V A
*/
@Entity
@Table(name = "studentdetails")
public class StudentDetails implements Serializable {
@Id
@GeneratedValue
@Column(name = "studentid")
private Long studentId;
@Column(name = "studentname")
private String studentName;
@Column(name = "studentgender")
private String studentGender;
@Column(name = "studentclass")
private String studentClass;
@Column(name = "studentdivision")
private String studentDivision;
public Long getStudentId() {
return studentId;
}

public void setStudentId(Long studentId) {
this.studentId = studentId;
}

public String getStudentName() {
return studentName;
}

public void setStudentName(String studentName) {
this.studentName = studentName;
}

public String getStudentGender() {
return studentGender;
}

public void setStudentGender(String studentGender) {
this.studentGender = studentGender;
}

public String getStudentClass() {
return studentClass;
}

public void setStudentClass(String studentClass) {
this.studentClass = studentClass;
}

public String getStudentDivision() {
return studentDivision;
}

public void setStudentDivision(String studentDivision) {
this.studentDivision = studentDivision;
}
}


7 create StudentManager in sourcePackage com.inzane.student.controller


/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package com.inzane.student.controller;

import com.inzane.student.Util.HibernateUtil;
import com.inzane.student.model.StudentDetails;
import java.util.List;
import org.hibernate.HibernateException;
import org.hibernate.classic.Session;

/**
*
* @author Krishnadas V A
*/
public class StudentManager {
@SuppressWarnings("unchecked")

public void add(StudentDetails studentDetails) {
Session session = HibernateUtil.getSessionFactory().getCurrentSession();
session.beginTransaction();
session.saveOrUpdate(studentDetails);
session.getTransaction().commit();
//return groupBooking;
}

public StudentDetails delete(Long id) {
Session session = HibernateUtil.getSessionFactory().getCurrentSession();
session.beginTransaction();
System.out.println("delete id"+id);
StudentDetails studentDetails = (StudentDetails) session.load(StudentDetails.class, id);
if (null != studentDetails) {
session.delete(studentDetails);
}
session.getTransaction().commit();
return studentDetails;
}

public List<StudentDetails> list() {

Session session = HibernateUtil.getSessionFactory().getCurrentSession();
//session.beginTransaction();
List<StudentDetails> studentDetails = null;
try {
session.beginTransaction();
studentDetails = (List<StudentDetails>) session.createQuery("from StudentDetails").list();
session.getTransaction().commit();
} catch (HibernateException e) {
e.printStackTrace();
//session.getTransaction().rollback();
}
//session.getTransaction().commit();
return studentDetails;
}

}

8.create StudentAction in source Package com.inzane.student.action

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package com.inzane.student.action;

import com.inzane.student.controller.StudentManager;
import com.inzane.student.model.StudentDetails;
import com.opensymphony.xwork2.ActionSupport;
import java.util.ArrayList;
import java.util.List;

/**
*
* @author Krishnadas V A
*/
public class StudentAction extends ActionSupport {

private StudentDetails studentDetails = new StudentDetails();
private List<StudentDetails> studentDetailsList;
private Long id;
private StudentManager studentManager;
private List<String> gender;
private List<String> division;

public StudentAction() {
studentManager = new StudentManager();

}

public void RadioButtonAction() {
gender = new ArrayList<String>();
gender.add("Male");
gender.add("Female");

}

public void DropDownAction() {
division = new ArrayList<String>();
division.add("A");
division.add("B");
division.add("C");
division.add("D");
division.add("E");
}

public List getgender() {
return gender;

}

public List getdivision() {
return division;

}

public void setgender(List<String> gender) {
this.gender = gender;

}

public void setdivision(List<String> division) {
this.division = division;

}

public Long getId() {
return id;
}

public void setId(Long id) {
this.id = id;
}

public StudentDetails getStudentDetails() {
return studentDetails;
}

public List<StudentDetails> getStudentDetailsList() {
return studentDetailsList;
}

public void setStudentDetails(StudentDetails studentDetails) {
this.studentDetails = studentDetails;
}

public void setStudentDetailsList(List<StudentDetails> studentDetailsList) {
this.studentDetailsList = studentDetailsList;
}

public String view() {
System.out.println("studentDetails view 0");
this.studentDetailsList = studentManager.list();
for(int i=0;i<studentDetailsList.size();i++){
System.out.println("getStudentName :" + this.studentDetailsList.get(i).getStudentName());
System.out.println("getStudentGender :" + this.studentDetailsList.get(i).getStudentGender());
System.out.println("getStudentClass :" + this.studentDetailsList.get(i).getStudentClass());
System.out.println("getStudentDivision :" + this.studentDetailsList.get(i).getStudentDivision());
}
System.out.println("studentDetails view 1");
RadioButtonAction();
System.out.println("studentDetails view 2");
DropDownAction();
System.out.println("studentDetails view 3");
return SUCCESS;

}

public String add() {
System.out.println("studentDetails add 1");

try {

System.out.println("getStudentName no:" + studentDetails.getStudentName());
System.out.println("getStudentGender no:" + studentDetails.getStudentGender());
System.out.println("getStudentClass no:" + studentDetails.getStudentClass());
System.out.println("getStudentDivision no:" + studentDetails.getStudentDivision());
System.out.println("About to Save studentDetails object:" + studentDetails);

studentManager.add(studentDetails);
System.out.println("studentDetails object Saved:" + studentDetails);
this.studentDetailsList = studentManager.list();
System.out.println("size of list :" + this.studentDetailsList.size());

System.out.println("studentDetails add 3");
RadioButtonAction();
System.out.println("studentDetails add 4");
DropDownAction();
System.out.println("studentDetails add 5");
return SUCCESS;
} catch (Exception e) {
System.out.println("studentDetails add 1-exception:" + e.getLocalizedMessage());
e.printStackTrace();
return ERROR;
}


}

public String delete() {
studentManager.delete(getId());
System.out.println("studentDetails view 0");
this.studentDetailsList = studentManager.list();
for(int i=0;i<studentDetailsList.size();i++){
System.out.println("getStudentName :" + this.studentDetailsList.get(i).getStudentName());
System.out.println("getStudentGender :" + this.studentDetailsList.get(i).getStudentGender());
System.out.println("getStudentClass :" + this.studentDetailsList.get(i).getStudentClass());
System.out.println("getStudentDivision :" + this.studentDetailsList.get(i).getStudentDivision());
}
System.out.println("studentDetails view 1");
RadioButtonAction();
System.out.println("studentDetails view 2");
DropDownAction();
System.out.println("studentDetails view 3");
return SUCCESS;
}

public String edit() {
//this.groupBooking=groupBookingManager.edit(getId());
this.studentDetailsList = studentManager.list();
for (int i = 0; i < studentDetailsList.size(); i++) {
if (studentDetailsList.get(i).getStudentId().equals(getId())) {
this.studentDetails = studentDetailsList.get(i);
}
}
RadioButtonAction();
DropDownAction();
return SUCCESS;
}

public String test() {
System.out.println("test method in StudentAction called.");
return SUCCESS;
}
}


9 create index.jsp in Web Pages

<%--
Document : index
Created on : 19 Dec, 2012, 12:21:23 PM
Author : Krishnadas V A
--%>

<META HTTP-EQUIV="Refresh" CONTENT="0;URL=one">



10 create students.jsp in Web Pages

<%--
Document : students
Created on : 19 Dec, 2012, 3:06:09 PM
Author : Krishnadas V A
--%>

<%@ page contentType="text/html; charset=UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Students</title>
</head>
<body>
<s:form name="addstudent" action="addstudent">
<s:textfield name="studentDetails.studentName" label="Student name" />
<s:radio name="studentDetails.studentGender" label="Gender" list="gender" />
<s:textfield name="studentDetails.studentClass" label="Class" />
<s:select name="studentDetails.studentDivision" label="Division" headerKey="-1" headerValue="select Division" list="division" />
<s:submit name="submit" label="submit"/>
</s:form>
<h3>Student list</h3>
<table>
<tr>
<th>Id</th>
<th>Name</th>
<th>Gender</th>
<th>Class</th>
<th>Division</th>
<th>Action</th>
</tr>
<s:iterator value="studentDetailsList" status="studentDetails" >
<tr>
<td><s:property value="studentId"/> </td>

<td><s:property value="studentName"/></td>
<td><s:property value="studentGender"/></td>

<td><s:property value="studentClass"/></td>
<td><s:property value="studentDivision"/></td>
<td><a href="delete?id=<s:property value="studentId"/>">delete</a>
<a href="edit?id=<s:property value="studentId"/>">edit</a></td>

</tr>
</s:iterator>
</table>
</body>
</html>

11 create editstudent.jsp in Web Pages

<%--
Document : students
Created on : 19 Dec, 2012, 3:06:09 PM
Author : Krishnadas V A
--%>

<%@ page contentType="text/html; charset=UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Students</title>
</head>
<body>
<s:form name="addstudent" action="addstudent">
<s:hidden name="studentDetails.studentId" value="%{studentDetails.studentId}"/>
<s:textfield name="studentDetails.studentName" label="Student name" value="%{studentDetails.studentName}"/>
<s:radio name="studentDetails.studentGender" label="Gender" list="gender" value="%{studentDetails.studentGender}"/>
<s:textfield name="studentDetails.studentClass" label="Class" value="%{studentDetails.studentClass}"/>
<s:select name="studentDetails.studentDivision" label="Division" headerKey="-1" headerValue="select Division" list="division" value="%{studentDetails.studentDivision}"/>
<s:submit name="submit" label="submit"/>
</s:form>
<h3>Student list</h3>
<table>
<tr>
<th>Id</th>
<th>Name</th>
<th>Gender</th>
<th>Class</th>
<th>Division</th>
<th>Action</th>
</tr>
<s:iterator value="studentDetailsList" status="studentDetails" >
<tr>
<td><s:property value="studentId"/> </td>

<td><s:property value="studentName"/></td>
<td><s:property value="studentGender"/></td>
<td><s:property value="studentClass"/></td>
<td><s:property value="studentDivision"/></td>
<td><a href="delete?id=<s:property value="studentId"/>">delete</a>
<a href="edit?id=<s:property value="studentId"/>">edit</a></td>

</tr>
</s:iterator>
</table>
</body>
</html>

Comments

  1. hind19 December 2013 at 10:28

    hi sir i neeed help
    i have one to many association and i don't know what to do can you help me ?

    ReplyDelete

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