Wednesday, September 3, 2014

MongoDB with Spring MVC Example

BigData MongoDb With Spring MVC



 1. POM.xml


<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>springData</groupId>
    <artifactId>springData</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>war</packaging>

    <name>springData</name>
    <url>http://maven.apache.org</url>

    <properties>
        <java.version>1.6</java.version>
        <spring.version>3.2.3.RELEASE</spring.version>
        <cglib.version>2.2.2</cglib.version>
    </properties>

    <dependencies>
        <!-- Spring core & mvc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-core</artifactId>
  <version>${spring.version}</version>
 
 
</dependency>

<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-beans</artifactId>
  <version>${spring.version}</version>
</dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <!-- CGLib for @Configuration -->
        <dependency>
    <groupId>cglib</groupId>
    <artifactId>cglib</artifactId>
    <version>2.2.2</version>
</dependency>
        <dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>1.2.14</version>
</dependency>
<dependency>
    <groupId>org.aspectj</groupId>
    <artifactId>aspectjrt</artifactId>
    <version>1.7.3</version>
</dependency>
   <dependency>
    <groupId>org.aspectj</groupId>
    <artifactId>aspectjweaver</artifactId>
    <version>1.7.3</version>
</dependency>
<dependency>
    <groupId>cglib</groupId>
    <artifactId>cglib</artifactId>
    <version>3.0</version>
</dependency>
<dependency>
   <groupId>asm</groupId>
   <artifactId>asm-all</artifactId>
   <version>2.1</version>
</dependency>
        <dependency>
            <groupId>cglib</groupId>
            <artifactId>cglib-nodep</artifactId>
            <version>${cglib.version}</version>
            <!-- <scope>runtime</scope> -->
        </dependency>

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-orm</artifactId>
    <version>${spring.version}</version>
</dependency>

<!--Mongo DB dependency  -->

<dependency>
    <groupId>org.springframework.data</groupId>
    <artifactId>spring-data-mongodb</artifactId>
    <version>1.4.1.RELEASE</version>
</dependency>

        <!-- Servlet Spec -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.4</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.1</version>
            <scope>provided</scope>
        </dependency>
    </dependencies>

<!-- Build Functionality.... -->
    <build>
        <finalName>springData</finalName>
       
          <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-war-plugin</artifactId>
        <version>2.4</version>
        <configuration>
                        <source>${java.version}</source>
                    <target>${java.version}</target>
        </configuration>
      </plugin>
    </plugins>
    </build>
</project>

2. Spring Context .xml Configuration


<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:mongo="http://www.springframework.org/schema/data/mongo"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans    
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
         http://www.springframework.org/schema/data/mongo
          http://www.springframework.org/schema/data/mongo/spring-mongo-1.1.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-3.0.xsd">
       
       
   
   

    <context:component-scan base-package="com.springData.controller" />
    <context:annotation-config/>


  <!-- Factory bean that creates the Mongo instance -->
    <bean id="mongo" class="org.springframework.data.mongodb.core.MongoFactoryBean">
        <property name="host" value="localhost" />
    </bean>
    
    <!-- MongoTemplate for connecting and quering the documents in the database -->
    <bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
        <constructor-arg name="mongo" ref="mongo" />
        <constructor-arg name="databaseName" value="mongoTest" />
    </bean>

    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix">
            <value>/WEB-INF/views/</value>
        </property>
        <property name="suffix">
            <value>.jsp</value>
        </property>
    </bean>

</beans>


3. WEB.XML File..

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
    <display-name>springData</display-name>
   

    <servlet>
        <servlet-name>springData</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
       
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springData</servlet-name>
        <url-pattern>*.htm</url-pattern>
    </servlet-mapping>

    <session-config>
        <session-timeout>30</session-timeout>
    </session-config>
    <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
   
</web-app>

4. Controller and Model classes
a.Controller
**************************
package com.springData.controller;

import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import com.springData.dao.Person;

@Controller
public class HomeController {

     @Autowired
        private PersonService personService;
    @RequestMapping("/welcome.htm")
    public String welcomePage(HttpServletRequest request,HttpServletResponse response)
    {
        System.out.println("Calling WElcome Controller");
        Person person=new Person();
        person.setId("13");
        person.setName("Pankaj");
        personService.addPerson(person);
        List<Person> personList= personService.listPerson();
   
       
        return "welcome";
    }
}

***************************

Bean
****************************

package com.springData.dao;
import org.springframework.data.annotation.Id;
import org.springframework.data.mongodb.core.mapping.Document;

@Document
public class Person {

    @Id
    private String id;
    private String name;
    
    public String getId() {
        return id;
    }
    public void setId(String id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
}
******************************
service Repository
*********************************

package com.springData.controller;

import java.util.List;
import java.util.UUID;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.stereotype.Repository;

import com.springData.dao.Person;

@Repository
public class PersonService {
   
    @Autowired
    private MongoTemplate mongoTemplate;
    
    public static final String COLLECTION_NAME = "person";
    
    public void addPerson(Person person) {
        if (!mongoTemplate.collectionExists(Person.class)) {
            mongoTemplate.createCollection(Person.class);
        }     
        person.setId(UUID.randomUUID().toString());
        mongoTemplate.insert(person, COLLECTION_NAME);
    }
    
    public List<Person> listPerson() {
        return mongoTemplate.findAll(Person.class, COLLECTION_NAME);
    }
    
    public void deletePerson(Person person) {
        mongoTemplate.remove(person, COLLECTION_NAME);
    }
    
    public void updatePerson(Person person) {
        mongoTemplate.insert(person, COLLECTION_NAME);    
    }

}
************************************









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