Spring MVC Annotation With Example

Spring MVC Annotation With Example:-

Step1st:-



Create Table:-



CREATE TABLE Employee(
   EMPID   INT NOT NULL AUTO_INCREMENT,
   EMPNAME VARCHAR(20) NOT NULL,
   EMPAGE  INT NOT NULL,
   SALARY BIGINT NOT NULL,
   ADDRESS VARCHAR(20) NOT NULL
   PRIMARY KEY (ID)
);
Step2nd:-  Create hibernate.cfg.xml
Step3rd:-  Add Jar File under lib folder
Step4th:-  Create Dispatcher servlet and add it into web.xml
step5h:-Create EmployeeBean.java
public class EmployeeBean {
 private Integer id;
 private String name;
 private Integer age;
 private Long salary;
 private String address;

 public Long getSalary() {
  return salary;
 }
 public void setSalary(Long salary) {
  this.salary = salary;
 }
 public Integer getId() {
  return id;
 }
 public void setId(Integer id) {
  this.id = id;
 }
 public String getName() {
  return name;
 }
 public void setName(String name) {
  this.name = name;
 }
 public Integer getAge() {
  return age;
 }
 public void setAge(Integer age) {
  this.age = age;
 }
 public String getAddress() {
  return address;
 }
 public void setAddress(String address) {
  this.address = address;
 }
}

Employee.java

import java.io.Serializable;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;

/**
 * @author Dinesh Rajput
 *
 */
@Entity
@Table(name="Employee")
public class Employee implements Serializable{

 private static final long serialVersionUID = -723583058586873479L;

 @Id
 @GeneratedValue(strategy=GenerationType.AUTO)
 @Column(name = "empid")
 private Integer empId;

 @Column(name="empname")
 private String empName;

 @Column(name="empaddress")
 private String empAddress;

 @Column(name="salary")
 private Long salary;

 @Column(name="empAge")
 private Integer empAge;

 public Integer getEmpId() {
  return empId;
 }

 public void setEmpId(Integer empId) {
  this.empId = empId;
 }

 public String getEmpName() {
  return empName;
 }

 public void setEmpName(String empName) {
  this.empName = empName;
 }

 public String getEmpAddress() {
  return empAddress;
 }

 public void setEmpAddress(String empAddress) {
  this.empAddress = empAddress;
 }

 public Long getSalary() {
  return salary;
 }

 public void setSalary(Long salary) {
  this.salary = salary;
 }

 public Integer getEmpAge() {
  return empAge;
 }

 public void setEmpAge(Integer empAge) {
  this.empAge = empAge;
 }
}

EmployeeDao.java

import java.util.List;

import com.dineshonjava.model.Employee;

/**
 * @author Dinesh Rajput
 *
 */
public interface EmployeeDao {

 public void addEmployee(Employee employee);

 public List<Employee> listEmployeess();

 public Employee getEmployee(int empid);

 public void deleteEmployee(Employee employee);
}

EmployeeDaoImpl.java

import java.util.List;

import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;

import com.dineshonjava.model.Employee;

/**
 * @author Dinesh Rajput
 *
 */
@Repository("employeeDao")
public class EmployeeDaoImpl implements EmployeeDao {

 @Autowired
 private SessionFactory sessionFactory;

 public void addEmployee(Employee employee) {
   sessionFactory.getCurrentSession().saveOrUpdate(employee);
 }

 @SuppressWarnings("unchecked")
 public List<Employee> listEmployeess() {
  return (List<Employee>) sessionFactory.getCurrentSession().createCriteria(Employee.class).list();
 }

 public Employee getEmployee(int empid) {
  return (Employee) sessionFactory.getCurrentSession().get(Employee.class, empid);
 }

 public void deleteEmployee(Employee employee) {
  sessionFactory.getCurrentSession().createQuery("DELETE FROM Employee WHERE empid = "+employee.getEmpId()).executeUpdate();
 }
}
EmployeeService.java
import java.util.List;

import com.dineshonjava.model.Employee;

/**
 * @author Dinesh Rajput
 *
 */
public interface EmployeeService {

 public void addEmployee(Employee employee);

 public List<Employee> listEmployeess();

 public Employee getEmployee(int empid);

 public void deleteEmployee(Employee employee);
}

EmployeeServiceImpl.java

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

import com.dineshonjava.dao.EmployeeDao;
import com.dineshonjava.model.Employee;

/**
 * @author Dinesh Rajput
 *
 */
@Service("employeeService")
@Transactional(propagation = Propagation.SUPPORTS, readOnly = true)
public class EmployeeServiceImpl implements EmployeeService {

 @Autowired
 private EmployeeDao employeeDao;

 @Transactional(propagation = Propagation.REQUIRED, readOnly = false)
 public void addEmployee(Employee employee) {
  employeeDao.addEmployee(employee);
 }

 public List<Employee> listEmployeess() {
  return employeeDao.listEmployeess();
 }

 public Employee getEmployee(int empid) {
  return employeeDao.getEmployee(empid);
 }

 public void deleteEmployee(Employee employee) {
  employeeDao.deleteEmployee(employee);
 }

}
EmployeeController.java
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

import com.dineshonjava.bean.EmployeeBean;
import com.dineshonjava.model.Employee;
import com.dineshonjava.service.EmployeeService;

/**
 * @author Dinesh Rajput
 *
 */
@Controller
public class EmployeeController {

 @Autowired
 private EmployeeService employeeService;

@RequestMapping(value = "/save", method = RequestMethod.POST)
public ModelAndView saveEmployee(@ModelAttribute("command")EmployeeBean employeeBean,
   BindingResult result) {
  Employee employee = prepareModel(employeeBean);
  employeeService.addEmployee(employee);
  return new ModelAndView("redirect:/add.html");
 }

 @RequestMapping(value="/employees", method = RequestMethod.GET)
 public ModelAndView listEmployees() {
  Map<String Object> model = new HashMap<String Object>();
  model.put("employees",  prepareListofBean(employeeService.listEmployeess()));
  return new ModelAndView("employeesList", model);
 }

 @RequestMapping(value = "/add", method = RequestMethod.GET)
 public ModelAndView addEmployee(@ModelAttribute("command")EmployeeBean employeeBean,
   BindingResult result) {
  Map<String, Object> model = new HashMap<String, Object>();
  model.put("employees",  prepareListofBean(employeeService.listEmployeess()));
  return new ModelAndView("addEmployee", model);
 }

@RequestMapping(value = "/index", method = RequestMethod.GET)
public ModelAndView welcome() {
  return new ModelAndView("index");
 }

@RequestMapping(value = "/delete", method = RequestMethod.GET)
public ModelAndView editEmployee(@ModelAttribute("command")EmployeeBean employeeBean,
   BindingResult result) {
  employeeService.deleteEmployee(prepareModel(employeeBean));
  Map<String, Object> model = new HashMap<String, Object>();
  model.put("employee", null);
  model.put("employees",  prepareListofBean(employeeService.listEmployeess()));
  return new ModelAndView("addEmployee", model);
 }

@RequestMapping(value = "/edit", method = RequestMethod.GET)
public ModelAndView deleteEmployee(@ModelAttribute("command")EmployeeBean employeeBean,
   BindingResult result) {
  Map<String, Object> model = new HashMap<String, Object>();
  model.put("employee", prepareEmployeeBean(employeeService.getEmployee(employeeBean.getId())));
  model.put("employees",  prepareListofBean(employeeService.listEmployeess()));
  return new ModelAndView("addEmployee", model);
 }

 private Employee prepareModel(EmployeeBean employeeBean){
  Employee employee = new Employee();
  employee.setEmpAddress(employeeBean.getAddress());
  employee.setEmpAge(employeeBean.getAge());
  employee.setEmpName(employeeBean.getName());
  employee.setSalary(employeeBean.getSalary());
  employee.setEmpId(employeeBean.getId());
  employeeBean.setId(null);
  return employee;
 }

 private List<EmployeeBean> prepareListofBean(List<Employee> employees){
  List<employeebean> beans = null;
  if(employees != null && !employees.isEmpty()){
   beans = new ArrayList<EmployeeBean>();
   EmployeeBean bean = null;
   for(Employee employee : employees){
    bean = new EmployeeBean();
    bean.setName(employee.getEmpName());
    bean.setId(employee.getEmpId());
    bean.setAddress(employee.getEmpAddress());
    bean.setSalary(employee.getSalary());
    bean.setAge(employee.getEmpAge());
    beans.add(bean);
   }
  }
  return beans;
 }

 private EmployeeBean prepareEmployeeBean(Employee employee){
  EmployeeBean bean = new EmployeeBean();
  bean.setAddress(employee.getEmpAddress());
  bean.setAge(employee.getEmpAge());
  bean.setName(employee.getEmpName());
  bean.setSalary(employee.getSalary());
  bean.setId(employee.getEmpId());
  return bean;
 }
}

addEmployee.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<%@taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
 <head>
  <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
  <title>Spring MVC Form Handling</title>
 </head>
 <body>
  <h2>Add Employee Data</h2>
  <form:form method="POST" action="/sdnext/save.html">
      <table>
       <tr>
           <td><form:label path="id">Employee ID:</form:label></td>
           <td><form:input path="id" value="${employee.id}" readonly="true"/></td>
       </tr>
       <tr>
           <td><form:label path="name">Employee Name:</form:label></td>
           <td><form:input path="name" value="${employee.name}"/></td>
       </tr>
       <tr>
           <td><form:label path="age">Employee Age:</form:label></td>
           <td><form:input path="age" value="${employee.age}"/></td>
       </tr>
       <tr>
           <td><form:label path="salary">Employee Salary:</form:label></td>
           <td><form:input path="salary" value="${employee.salary}"/></td>
       </tr>
     
       <tr>
           <td><form:label path="address">Employee Address:</form:label></td>
                    <td><form:input path="address" value="${employee.address}"/></td>
       </tr>
          <tr>
         <td colspan="2"><input type="submit" value="Submit"/></td>
        </tr>
   </table>
  </form:form>

  <c:if test="${!empty employees}">
  <h2>List Employees</h2>
 <table align="left" border="1">
  <tr>
   <th>Employee ID</th>
   <th>Employee Name</th>
   <th>Employee Age</th>
   <th>Employee Salary</th>
   <th>Employee Address</th>
           <th>Actions on Row</th>
  </tr>

  <c:forEach items="${employees}" var="employee">
   <tr>
    <td><c:out value="${employee.id}"/></td>
    <td><c:out value="${employee.name}"/></td>
    <td><c:out value="${employee.age}"/></td>
    <td><c:out value="${employee.salary}"/></td>
    <td><c:out value="${employee.address}"/></td>
    <td align="center"><a href="edit.html?id=${employee.id}">Edit</a> | <a href="delete.html?id=${employee.id}">Delete</a></td>
   </tr>
  </c:forEach>
 </table>
</c:if>
 </body>
</html>

EmployeeList.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>All Employees</title>
</head>
<body>
<h1>List Employees</h1>
<h3><a href="add.html">Add More Employee</a></h3>

<c:if test="${!empty employees}">
 <table align="left" border="1">
  <tr>
   <th>Employee ID</th>
   <th>Employee Name</th>
   <th>Employee Age</th>
   <th>Employee Salary</th>
   <th>Employee Address</th>
  </tr>

  <c:forEach items="${employees}" var="employee">
   <tr>
    <td><c:out value="${employee.id}"/></td>
    <td><c:out value="${employee.name}"/></td>
    <td><c:out value="${employee.age}"/></td>
    <td><c:out value="${employee.salary}"/></td>
    <td><c:out value="${employee.address}"/></td>
   </tr>
  </c:forEach>
 </table>
</c:if>
</body>
</html>

index.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
    <title>Spring3MVC with Hibernate3 CRUD Example using Annotations</title>
  </head>
  <body>
    <h2>Spring3MVC with Hibernate3 CRUD Example using Annotations</h2>
    <h2>1. <a href="employees.html">List of Employees</a></h2>
    <h2>2. <a href="add.html">Add Employee</a></h2>
  </body>
</html>