mercredi 8 avril 2015

java.lang.ClassNotFoundException: org.springframework.servlet.DispatcherServlet

Hi all I am new in Spring, Servlet ,Jsp ,Maven. I am trying to implement Spring MVC by following some tutorial. I am really not able to understand the flow how Spring MVC works and after learning lot of tutorial I have some idea. So I started creating a simple web app through Spring MVC. but I am getting "java.lang.ClassNotFoundException: org.springframework.servlet.DispatcherServlet"


after searching a lot I found similar solution that I need to add following dependency to POM.XML



  • spring-core

  • spring-beans

  • spring-context

  • servlet-api

  • spring-webmvc

  • spring-web


I have added all these dependency to my pom. The another solution which I found to use the Project-properties-Deployment Assembly-Add- IVY. but I ma not getting that IVY folder after after clicking on add button I dont no why but I am using JBOSS Please dont close this question I have been facing these issue since last week but could not implement MVC.


Please please help me This post can help lot of people who are new and can implement these bcz i have included all the classes along with jsp.


Directory Structure enter image description here


POM.XML 



<project xmlns="http://ift.tt/IH78KX" xmlns:xsi="http://ift.tt/ra1lAU"
  xsi:schemaLocation="http://ift.tt/IH78KX http://ift.tt/HBk9RF">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.mycompany.app</groupId>
  <artifactId>my-app</artifactId>
  <packaging>jar</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>my-app</name>
  <url>http://ift.tt/19pvvEY;

  <properties>
    <java.version>1.7</java.version>
    <spring.version>3.2.13.RELEASE</spring.version>
    <cglib.version>2.2.2</cglib.version>
 </properties> 


  <dependencies>
       <!-- Spring Core & MVC -->
  <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>3.2.13.RELEASE</version>
  </dependency>

  <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-beans</artifactId>
        <version>3.2.13.RELEASE</version>
  </dependency>

   <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>3.2.13.RELEASE</version>
    </dependency>

    <dependency>
        <groupId>commons-logging</groupId>
        <artifactId>commons-logging-api</artifactId>
        <version>1.1</version>
        <exclusions>
                <exclusion>
                    <groupId>javax.servlet</groupId>
                    <artifactId>servlet-api</artifactId>
                </exclusion>
        </exclusions>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>3.2.13.RELEASE</version>
    </dependency>

     <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
        <version>3.2.13.RELEASE</version>
    </dependency>


    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-orm</artifactId>
        <version>3.2.13.RELEASE</version>
        <type>jar</type>
        <scope>compile</scope>
    </dependency>

    <!-- CGLib for @Configuration -->
    <dependency>
        <groupId>cglib</groupId>
        <artifactId>cglib-nodep</artifactId>
        <version>2.1_2</version>
        <scope>runtime</scope>
    </dependency>

    <!-- Servlet Specifiaction -->

    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>3.0.1</version>
        <scope>provided</scope>
    </dependency>
   <dependency>
        <groupId>javax.servlet.jsp</groupId>
        <artifactId>jsp-api</artifactId>
        <version>2.1</version>
        <scope>provided</scope>
    </dependency>

    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
        <version>1.2</version>
    </dependency> 

    <dependency>
        <groupId>org.springframework.security</groupId>
        <artifactId>spring-security-taglibs</artifactId>
        <version>3.0.7.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
</project>


WEB.XML 



<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://ift.tt/HeF78r">
<web-app id="WebApp_ID">
    <display-name>my-app</display-name>


    <servlet>
        <servlet-name>HomeController</servlet-name>
        <servlet-class>org.springfarmework.servlet.DispatcherServlet</servlet-class>


         <init-param>
        <param-name>contextClass</param-name>
        <param-value>
            org.springframework.web.context.support.AnnotationConfigWebApplicationContext
        </param-value>
    </init-param>
        <load-on-startup>1</load-on-startup>



    </servlet>

    <servlet-mapping>
            <servlet-name>HomeController</servlet-name>
            <url-pattern>*.*</url-pattern>

    </servlet-mapping>


    <welcome-file-list>
        <!-- <welcome-file>index.html</welcome-file> -->
        <welcome-file>ContactForm.jsp</welcome-file>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>default.html</welcome-file>
        <welcome-file>default.htm</welcome-file>
        <welcome-file>default.jsp</welcome-file>
    </welcome-file-list>


</web-app>


I am using java class MvcConfiguration insted of XmlFilename-servlet.xml


MvcConfiguration 



package net.codejava.spring.config;

import javax.sql.DataSource;

import net.codejava.spring.dao.ContactDAO;
import net.codejava.spring.dao.ContactDAOImpl;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;



@EnableWebMvc
@ComponentScan(basePackages="net.codejava.spring")
@Configuration

public class MvcConfiguration extends WebMvcConfigurerAdapter {

    /* @Bean
        public ViewResolver getViewResolver(){
            InternalResourceViewResolver resolver = new InternalResourceViewResolver();
            resolver.setPrefix("/WEB-INF/");
            resolver.setSuffix(".jsp");
            return resolver;
        }*/

     @Bean
    public InternalResourceViewResolver getInternalResourceViewResolver(){
        InternalResourceViewResolver resolver = new InternalResourceViewResolver();
        resolver.setPrefix("/WEB-INF/");
        resolver.setSuffix(".jsp");
        return resolver;
    }

     @Override
        public void addResourceHandlers(ResourceHandlerRegistry registry) {
            registry.addResourceHandler("/resources/**").addResourceLocations("/resources/");
        }

     @Bean
        public DataSource getDataSource() {
            DriverManagerDataSource dataSource = new DriverManagerDataSource();
            dataSource.setDriverClassName("oracle.jdbc.driver.OracleDriver");
            dataSource.setUrl("jdbc:oracle://localhost:1521/orcl");
            dataSource.setUsername("system");
            dataSource.setPassword("admin");

            return dataSource;
        }

     @Bean
        public ContactDAO getContactDAO() {
            return new ContactDAOImpl(getDataSource());
        }
}


HomeController.java 



package net.codejava.spring.controller;

import java.io.IOException;

import javax.servlet.http.HttpServletRequest;

import net.codejava.spring.dao.ContactDAO;
import net.codejava.spring.model.Contact;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
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 antlr.collections.List;

@Controller
public class HomeController {

    @Autowired
     private ContactDAO contactDAO;

    @RequestMapping(value="/")
    public ModelAndView listContact(ModelAndView model) throws IOException{
        List listContact = (List) contactDAO.list();
        model.addObject("listContact", listContact);
        model.setViewName("home");

        return model;
    }


    @RequestMapping(value = "/newContact", method = RequestMethod.GET)
    public ModelAndView newContact(ModelAndView model) {
        Contact newContact = new Contact();
        model.addObject("contact", newContact);
        model.setViewName("ContactForm");
        return model;
    }

    @RequestMapping(value = "/saveContact", method = RequestMethod.POST)
    public ModelAndView saveContact(@ModelAttribute Contact contact) {
        contactDAO.saveOrUpdate(contact);
        return new ModelAndView("redirect:/");
    }

    @RequestMapping(value = "/deleteContact", method = RequestMethod.GET)
    public ModelAndView deleteContact(HttpServletRequest request) {
        int contactId = Integer.parseInt(request.getParameter("id"));
        contactDAO.delete(contactId);
        return new ModelAndView("redirect:/");
    }

    @RequestMapping(value = "/editContact", method = RequestMethod.GET)
    public ModelAndView editContact(HttpServletRequest request) {
        int contactId = Integer.parseInt(request.getParameter("id"));
        Contact contact = contactDAO.get(contactId);
        ModelAndView model = new ModelAndView("ContactForm");
        model.addObject("contact", contact);

        return model;
    }


}


ContactDAO interface



package net.codejava.spring.dao;
import java.util.List;
import net.codejava.spring.model.Contact;

public interface ContactDAO {

    public void saveOrUpdate(Contact contact);

    public void delete(int contactId);

    public Contact get(int contactId);

    public List<Contact> list();

}


ContactDAOImpl for database connectivity



package net.codejava.spring.dao;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;

import javax.sql.DataSource;


import net.codejava.spring.model.Contact;

import org.springframework.dao.DataAccessException;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.ResultSetExtractor;
import org.springframework.jdbc.core.RowMapper;


/**
* An implementation of the ContactDAO interface.
* @author Barun Kumar
*
*/

public class ContactDAOImpl implements ContactDAO {

    private JdbcTemplate jdbcTemplate;

    public ContactDAOImpl(DataSource dataSource) {
        jdbcTemplate = new JdbcTemplate(dataSource);
    }




    public void saveOrUpdate(Contact contact) {
        // TODO Auto-generated method stub
        System.out.println("Save or update method");
        if(contact.getId()>0)
        {
            //Update
            String sql = "UPDATE contact SET name=?, email=?, address=?, "
                    + "telephone=? WHERE contact_id=?";
        jdbcTemplate.update(sql, contact.getName(), contact.getEmail(),
                contact.getAddress(), contact.getTelephone(), contact.getId());
        }
        else {
            // insert
            String sql = "INSERT INTO contact (name, email, address, telephone)"
                        + " VALUES (?, ?, ?, ?)";
            jdbcTemplate.update(sql, contact.getName(), contact.getEmail(),
                    contact.getAddress(), contact.getTelephone());


            }   
    }

    public void delete(int contactId) {
        // TODO Auto-generated method stub
        System.out.println("Delete method");

        String sql="DELETE FROM contact WHERE contact_id=?";
        jdbcTemplate.update(sql, contactId);

    }

    public Contact get(int contactId) {
        // TODO Auto-generated method stub
        System.out.println("Get method");
        String sql = "SELECT * FROM contact WHERE contact_id=" + contactId;
        return jdbcTemplate.query(sql, new ResultSetExtractor<Contact>() {


            public Contact extractData(ResultSet rs) throws SQLException,
                    DataAccessException {
                if (rs.next()) {
                    Contact contact = new Contact();
                    contact.setId(rs.getInt("contact_id"));
                    contact.setName(rs.getString("name"));
                    contact.setEmail(rs.getString("email"));
                    contact.setAddress(rs.getString("address"));
                    contact.setTelephone(rs.getString("telephone"));
                    return contact;
                }

                return null;
            }

        });
    }

    public List<Contact> list() {
        // TODO Auto-generated method stub
        System.out.println("List");
         String sql = "SELECT * FROM contact";
            List<Contact> listContact = jdbcTemplate.query(sql, new RowMapper<Contact>() {


                public Contact mapRow(ResultSet rs, int rowNum) throws SQLException {
                    Contact aContact = new Contact();

                    aContact.setId(rs.getInt("contact_id"));
                    aContact.setName(rs.getString("name"));
                    aContact.setEmail(rs.getString("email"));
                    aContact.setAddress(rs.getString("address"));
                    aContact.setTelephone(rs.getString("telephone"));

                    return aContact;
                }

            });

        return listContact;
    }

}


Contact.java Bean class



package net.codejava.spring.model;

public class Contact {

    private int id;
    private String name;
    private String email;
    private String address;
    private String telephone;

    public Contact()
    {
        System.out.println("the default contructor");
    }

     public Contact(String name, String email, String address, String telephone) {
            this.name = name;
            this.email = email;
            this.address = address;
            this.telephone = telephone;
        }


     //getters and setters method

    public int getId() {
        return id;
    }

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

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public String getTelephone() {
        return telephone;
    }

    public void setTelephone(String telephone) {
        this.telephone = telephone;
    }




}


ContactForm.jsp 



<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
    <%@ taglib prefix="form" uri="http://ift.tt/IED0jK"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://ift.tt/kTyqzh">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>

<div align="center">
        <h1>New/Edit Contact</h1>
        <form:form action="saveContact" method="post" modelAttribute="contact">
        <table>
            <form:hidden path="id"/>
            <tr>
                <td>Name:</td>
                <td><form:input path="name" /></td>
            </tr>
            <tr>
                <td>Email:</td>
                <td><form:input path="email" /></td>
            </tr>
            <tr>
                <td>Address:</td>
                <td><form:input path="address" /></td>
            </tr>
            <tr>
                <td>Telephone:</td>
                <td><form:input path="telephone" /></td>
            </tr>
            <tr>
                <td colspan="2" align="center"><input type="submit" value="Save"></td>
            </tr>
        </table>
        </form:form>
    </div>
</body>
</html>


Home.jsp 



<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
    <%@ taglib uri="http://ift.tt/QfKAz6" prefix="c" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://ift.tt/kTyqzh">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Contact Manager Home</title>
</head>
<body>

<div align="center">
            <h1>Contact List</h1>
            <h3><a href="/newContact">New Contact</a></h3>
            <table border="1">

                <th>No</th>
                <th>Name</th>
                <th>Email</th>
                <th>Address</th>
                <th>Telephone</th>
                <th>Action</th>

                <c:forEach var="contact" items="${listContact}" varStatus="status">
                <tr>
                    <td>${status.index + 1}</td>
                    <td>${contact.name}</td>
                    <td>${contact.email}</td>
                    <td>${contact.address}</td>
                    <td>${contact.telephone}</td>
                    <td>
                        <a href="/editContact?id=${contact.id}">Edit</a>
                        &nbsp;&nbsp;&nbsp;&nbsp;
                        <a href="/deleteContact?id=${contact.id}">Delete</a>
                    </td>

                </tr>
                </c:forEach>             
            </table>
        </div>
    </body>
</body>
</html>

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